{"id":7278,"date":"2026-05-14T00:00:00","date_gmt":"2026-05-14T00:00:00","guid":{"rendered":"https:\/\/lp.szlogic.cn\/glossary\/what-is-frame-check-sequence-fcs\/"},"modified":"2026-06-22T03:25:59","modified_gmt":"2026-06-22T03:25:59","slug":"what-is-frame-check-sequence-fcs","status":"publish","type":"post","link":"https:\/\/resourceslp.szlogic.cn\/ja\/glossary\/what-is-frame-check-sequence-fcs","title":{"rendered":"\u30d5\u30ec\u30fc\u30e0\u30c1\u30a7\u30c3\u30af\u30b7\u30fc\u30b1\u30f3\u30b9\uff08FCS\uff09\uff1a\u610f\u5473\u3001\u30a8\u30e9\u30fc\u3001\u304a\u3088\u3073\u5bfe\u51e6\u6cd5"},"content":{"rendered":"<figure class=\"wp-block-image aligncenter size-large\"><img fetchpriority=\"high\" decoding=\"async\" width=\"1200\" height=\"628\" src=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/88484eaf1ed240fd919c40e0be49a046.jpg\" alt=\"Frame Check Sequence (FCS): Meaning, Errors, and Fixes\" class=\"wp-image-7268\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/88484eaf1ed240fd919c40e0be49a046.jpg 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/88484eaf1ed240fd919c40e0be49a046-300x157.jpg 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/88484eaf1ed240fd919c40e0be49a046-1024x536.jpg 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/88484eaf1ed240fd919c40e0be49a046-768x402.jpg 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/88484eaf1ed240fd919c40e0be49a046-18x9.jpg 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u30d5\u30ec\u30fc\u30e0\u30c1\u30a7\u30c3\u30af\u30b7\u30fc\u30b1\u30f3\u30b9\uff08FCS\uff09\u306f\u3001\u30a4\u30fc\u30b5\u30cd\u30c3\u30c8\u304a\u3088\u3073\u305d\u306e\u4ed6\u306e\u30c7\u30fc\u30bf\u901a\u4fe1\u30d7\u30ed\u30c8\u30b3\u30eb\u3067\u4f7f\u7528\u3055\u308c\u308b\u30ec\u30a4\u30e4\u30fc2\u306e\u30a8\u30e9\u30fc\u691c\u51fa\u6a5f\u69cb\u3067\u3042\u308a\u3001\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30d5\u30ec\u30fc\u30e0\u304c\u4f1d\u9001\u4e2d\u306b\u7834\u640d\u3057\u3066\u3044\u306a\u3044\u304b\u3092\u691c\u8a3c\u3059\u308b\u305f\u3081\u306b\u7528\u3044\u3089\u308c\u307e\u3059\u3002\u73fe\u4ee3\u306e\u30a4\u30fc\u30b5\u30cd\u30c3\u30c8\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u3067\u306f\u3001FCS\u30d5\u30a3\u30fc\u30eb\u30c9\u306f\u901a\u5e38CRC-32\u306b\u57fa\u3065\u3044\u3066\u304a\u308a\u3001\u3059\u3079\u3066\u306e\u30a4\u30fc\u30b5\u30cd\u30c3\u30c8\u30d5\u30ec\u30fc\u30e0\u306e\u672b\u5c3e\u306b\u4ed8\u52a0\u3055\u308c\u3066\u3001\u30b9\u30a4\u30c3\u30c1\u3001\u30eb\u30fc\u30bf\u30fc\u3001\u30b5\u30fc\u30d0\u30fc\u3001\u304a\u3088\u3073 <a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/ja\/glossary\/what-is-nic-network-interface-card\/\">\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u30ab\u30fc\u30c9\uff08NIC\uff09<\/a> \u304c\u3001\u4e0a\u4f4d\u30ec\u30a4\u30e4\u30fc\u30d7\u30ed\u30c8\u30b3\u30eb\u306b\u3088\u3063\u3066\u30c7\u30fc\u30bf\u304c\u51e6\u7406\u3055\u308c\u308b\u524d\u306b\u4f1d\u9001\u30a8\u30e9\u30fc\u3092\u691c\u51fa\u3067\u304d\u308b\u3088\u3046\u306b\u3057\u307e\u3059\u3002.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u5b9f\u969b\u306e\u30cd\u30c3\u30c8\u30ef\u30fc\u30ad\u30f3\u30b0\u74b0\u5883\u306b\u304a\u3044\u3066\u3001FCS\u30a8\u30e9\u30fc\u306f\u5358\u306a\u308b\u7406\u8ad6\u4e0a\u306e\u30d7\u30ed\u30c8\u30b3\u30eb\u30a4\u30d9\u30f3\u30c8\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002\u3053\u308c\u3089\u306f\u3001\u640d\u50b7\u3057\u305f\u30a4\u30fc\u30b5\u30cd\u30c3\u30c8\u30b1\u30fc\u30d6\u30eb\u3001\u6c5a\u67d3\u3055\u308c\u305f\u30d5\u30a1\u30a4\u30d0\u30b3\u30cd\u30af\u30bf\u3001\u4e0d\u5b89\u5b9a\u306a\u5149\u5b66\u30e2\u30b8\u30e5\u30fc\u30eb\u3001, <a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/ja\/glossary\/what-is-electromagnetic-interference\/\">\u96fb\u78c1\u5e72\u6e09\u306b\u5bfe\u3057\u3066\u514d\u75ab\u304c\u3042\u308b<\/a> \uff08EMI\uff09\u3001\u30c7\u30e5\u30d7\u30ec\u30c3\u30af\u30b9\u4e0d\u4e00\u81f4\u3001\u3042\u308b\u3044\u306f\u9ad8\u901f\u30ea\u30f3\u30af\u306b\u304a\u3051\u308b\u4fe1\u53f7\u6574\u5408\u6027\u306e\u52a3\u5316\u306a\u3069\u3001\u5b9f\u969b\u306e\u7269\u7406\u5c64\u306e\u554f\u984c\u306e\u521d\u671f\u8b66\u544a\u30b5\u30a4\u30f3\u3067\u3042\u308b\u3053\u3068\u304c\u3088\u304f\u3042\u308a\u307e\u3059\u3002\u30c7\u30fc\u30bf\u30bb\u30f3\u30bf\u30fc\u304a\u3088\u3073\u30a8\u30f3\u30bf\u30fc\u30d7\u30e9\u30a4\u30ba\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u3067\u306f\u3001\u7e70\u308a\u8fd4\u3057\u767a\u751f\u3059\u308bCRC\uff0fFCS\u30a8\u30e9\u30fc\u306f\u3001\u4e0d\u826f\u306a <a target=\"_self\" href=\"https:\/\/www.l-p.com\/store-26155-1g-sfp.htm\">SFP<\/a>, <a target=\"_self\" href=\"https:\/\/www.l-p.com\/store-26192-10g-sfp.htm\">SFP+<\/a>, <a target=\"_self\" href=\"https:\/\/www.l-p.com\/store-26153-40g-qsfp.htm\">QSFP<\/a>, \u3001\u307e\u305f\u306f <a target=\"_self\" href=\"https:\/\/www.l-p.com\/store-27045-100g-qsfp28-sfp-dd.htm\">QSFP28<\/a> \u5149\u30c8\u30e9\u30f3\u30b7\u30fc\u30d0\u304a\u3088\u3073\u4f4e\u54c1\u8cea\u306a\u914d\u7dda\u30a4\u30f3\u30d5\u30e9\u30b9\u30c8\u30e9\u30af\u30c1\u30e3\u3068\u95a2\u9023\u4ed8\u3051\u3089\u308c\u308b\u3053\u3068\u304c\u4e00\u822c\u7684\u3067\u3059\u3002.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u30a4\u30fc\u30b5\u30cd\u30c3\u30c8\u306e\u901f\u5ea6\u306f\u3001IEEE 802.3ck\u306a\u3069\u306e\u898f\u683c\u3067\u5b9a\u7fa9\u3055\u308c\u308b1G\u304a\u3088\u307310G\u304b\u3089100G\u3001400G\u3001\u3055\u3089\u306b\u306f800G\u3078\u3068\u9032\u5316\u3057\u7d9a\u3051\u3066\u3044\u307e\u3059\u304c\u3001\u30d5\u30ec\u30fc\u30e0\u306e\u5b8c\u5168\u6027\u3092\u7dad\u6301\u3059\u308b\u3053\u3068\u306f\u307e\u3059\u307e\u3059\u91cd\u8981\u306b\u306a\u3063\u3066\u3044\u307e\u3059\u3002\u3054\u304f\u308f\u305a\u304b\u306a <a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/ja\/glossary\/understanding-what-is-bit-error-rate\/\">\u30d3\u30c3\u30c8\u8aa4\u308a\u7387<\/a> \uff08BER\uff09\u3067\u3042\u3063\u3066\u3082\u3001\u30d1\u30b1\u30c3\u30c8\u306e\u7834\u640d\u3001\u518d\u9001\u4fe1\u3001\u9045\u5ef6\u306e\u5897\u52a0\u3001\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306e\u4e0d\u5b89\u5b9a\u5316\u3092\u5f15\u304d\u8d77\u3053\u3059\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002\u305d\u306e\u305f\u3081\u3001\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30a8\u30f3\u30b8\u30cb\u30a2\u306f\u3001\u30d1\u30b1\u30c3\u30c8\u30ed\u30b9\u3084\u65ad\u7d9a\u7684\u306a\u63a5\u7d9a\u554f\u984c\u306e\u30c8\u30e9\u30d6\u30eb\u30b7\u30e5\u30fc\u30c6\u30a3\u30f3\u30b0\u3092\u884c\u3046\u969b\u306b\u3001\u30b9\u30a4\u30c3\u30c1\u304a\u3088\u3073\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u6a5f\u5668\u306eFCS\u30ab\u30a6\u30f3\u30bf\u30fc\u3092\u983b\u7e41\u306b\u76e3\u8996\u3057\u307e\u3059\u3002.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u672c\u8a18\u4e8b\u3067\u306f\u3001\u30d5\u30ec\u30fc\u30e0\u30c1\u30a7\u30c3\u30af\u30b7\u30fc\u30b1\u30f3\u30b9\uff08FCS\uff09\u306e\u610f\u5473\u3001\u30a4\u30fc\u30b5\u30cd\u30c3\u30c8\u30d5\u30ec\u30fc\u30e0\u5185\u3067CRC-32\u304c\u3069\u306e\u3088\u3046\u306b\u6a5f\u80fd\u3059\u308b\u304b\u3001FCS\u30a8\u30e9\u30fc\u304c\u767a\u751f\u3059\u308b\u7406\u7531\u3001\u304a\u3088\u3073\u305d\u308c\u304c <a target=\"_self\" href=\"https:\/\/www.l-p.com\/store-25432-optics-transceivers-sfp-modules.htm\">\u5149\u30e2\u30b8\u30e5\u30fc\u30eb\u306e\u30e9\u30a4\u30f3\u30ca\u30c3\u30d7\u3092<\/a> \u304a\u3088\u3073\u30d5\u30a1\u30a4\u30d0\u30ea\u30f3\u30af\u3068\u3069\u306e\u3088\u3046\u306b\u95a2\u4fc2\u3057\u3066\u3044\u308b\u304b\u3001\u3055\u3089\u306b\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u5c02\u9580\u5bb6\u304c\u5b9f\u969b\u306e\u5c55\u958b\u74b0\u5883\u3067CRC\uff0fFCS\u95a2\u9023\u306e\u554f\u984c\u3092\u8a3a\u65ad\u30fb\u89e3\u6c7a\u3059\u308b\u65b9\u6cd5\u306b\u3064\u3044\u3066\u8aac\u660e\u3057\u307e\u3059\u3002\u672c\u30ac\u30a4\u30c9\u306e\u6700\u5f8c\u307e\u3067\u8aad\u3081\u3070\u3001\u73fe\u4ee3\u306e\u30a4\u30fc\u30b5\u30cd\u30c3\u30c8\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306b\u304a\u3051\u308bFCS\u306e\u7406\u8ad6\u7684\u57fa\u76e4\u304a\u3088\u3073\u904b\u7528\u4e0a\u306e\u91cd\u8981\u6027\u306e\u4e21\u65b9\u3092\u7406\u89e3\u3067\u304d\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" >\u2705 \u30d5\u30ec\u30fc\u30e0\u30c1\u30a7\u30c3\u30af\u30b7\u30fc\u30b1\u30f3\u30b9\uff08FCS\uff09\u3068\u306f\uff1f<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u30d5\u30ec\u30fc\u30e0\u30c1\u30a7\u30c3\u30af\u30b7\u30fc\u30b1\u30f3\u30b9\uff08FCS\uff09\u306f\u3001\u30a4\u30fc\u30b5\u30cd\u30c3\u30c8\u30d5\u30ec\u30fc\u30e0\u306e\u672b\u5c3e\u306b\u914d\u7f6e\u3055\u308c\u308b\u30c8\u30ec\u30fc\u30e9\u30fc\u30fb\u30d5\u30a3\u30fc\u30eb\u30c9\u3067\u3042\u308a\u3001\u4f1d\u9001\u30a8\u30e9\u30fc\u3092\u691c\u51fa\u3059\u308b\u305f\u3081\u306b\u4f7f\u7528\u3055\u308c\u308bCRC\u5024\u3092\u4fdd\u6301\u3057\u307e\u3059\u3002 <a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/ja\/knowledge-center\/ieee-802-3-ethernet-standard-explained\/\">SFP\u30e2\u30b8\u30e5\u30fc\u30eb\u3092\u691c\u51fa<\/a> \u30d5\u30ec\u30fc\u30df\u30f3\u30b0\u306b\u304a\u3044\u3066\u3001FCS\u306f4\u30d0\u30a4\u30c8\u306e\u9577\u3055\u3067\u3042\u308a\u3001\u53d7\u4fe1\u5074\u304c\u30c7\u30fc\u30bf\u3092\u53d7\u8afe\u3059\u308b\u524d\u306b\u3001\u30d5\u30ec\u30fc\u30e0\u304c\u7121\u640d\u304b\u7834\u640d\u3057\u3066\u3044\u308b\u304b\u3092\u5224\u65ad\u3059\u308b\u306e\u306b\u5f79\u7acb\u3061\u307e\u3059\u3002.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large\"><img decoding=\"async\" width=\"1200\" height=\"675\" src=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/2549c701a33d4df493a36c7365132a8f.jpg\" alt=\"What Is Frame Check Sequence (FCS)?\" class=\"wp-image-7269\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/2549c701a33d4df493a36c7365132a8f.jpg 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/2549c701a33d4df493a36c7365132a8f-300x169.jpg 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/2549c701a33d4df493a36c7365132a8f-1024x576.jpg 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/2549c701a33d4df493a36c7365132a8f-768x432.jpg 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/2549c701a33d4df493a36c7365132a8f-18x10.jpg 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\" >FCS \u30de\u30a4\u30af\u30ed\u5b9a\u7fa9<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">FCS\uff08Frame Check Sequence\uff09\u306f\u3001\u4f1d\u9001\u4e2d\u306e\u30a4\u30fc\u30b5\u30cd\u30c3\u30c8\u30d5\u30ec\u30fc\u30e0\u306e\u5b8c\u5168\u6027\u3092\u691c\u8a3c\u3059\u308b\u305f\u3081\u306b\u7528\u3044\u3089\u308c\u308b\u30ec\u30a4\u30e4\u30fc2\u306e\u30c8\u30ec\u30fc\u30e9\u30fc\u30fb\u30d5\u30a3\u30fc\u30eb\u30c9\u3067\u3059\u3002.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u5358\u7d14\u306a\u5b9a\u7fa9\uff1aFCS \uff1d \u30a4\u30fc\u30b5\u30cd\u30c3\u30c8\u30d5\u30ec\u30fc\u30e0\u306e\u672b\u5c3e\u306b\u4ed8\u52a0\u3055\u308c\u308b\u8aa4\u308a\u691c\u51fa\u5024<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u7c21\u7565\u5316\u3055\u308c\u305f\u30a4\u30fc\u30b5\u30cd\u30c3\u30c8\u30d5\u30ec\u30fc\u30e0\u69cb\u9020\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\">\n<code>| \u30a4\u30fc\u30b5\u30cd\u30c3\u30c8\u30d8\u30c3\u30c0\u30fc | \u30da\u30a4\u30ed\u30fc\u30c9 | FCS |<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u53d7\u4fe1\u3057\u305fFCS\u304c\u518d\u8a08\u7b97\u3055\u308c\u305f\u5024\u3068\u4e00\u81f4\u3057\u306a\u3044\u5834\u5408\u3001\u305d\u306e\u30d5\u30ec\u30fc\u30e0\u306f\u7834\u68c4\u3055\u308c\u307e\u3059\u3002.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >CRC-32 \u30de\u30a4\u30af\u30ed\u5b9a\u7fa9<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">CRC-32\uff08\u5de1\u56de\u5197\u9577\u691c\u67fb 32\u30d3\u30c3\u30c8\uff09\u306f\u3001\u30a4\u30fc\u30b5\u30cd\u30c3\u30c8\u306eFCS\u5024\u3092\u751f\u6210\u3059\u308b\u305f\u3081\u306b\u7528\u3044\u3089\u308c\u308b\u6570\u5b66\u7684\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0\u3067\u3059\u3002.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u30a4\u30fc\u30b5\u30cd\u30c3\u30c8\u3067\u306f\uff1a<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">CRC-32CRCtext{-}32CRC-32<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u57fa\u672c\u7684\u306a\u51e6\u7406\u624b\u9806\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\">\n<code>\u30d5\u30ec\u30fc\u30e0\u30c7\u30fc\u30bf \u2192 CRC-32\u8a08\u7b97 \u2192 FCS<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u53d7\u4fe1\u5074\u3067\u306e\u51e6\u7406\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\">\n<code>\u53d7\u4fe1\u30d5\u30ec\u30fc\u30e0 \u2192 CRC\u306e\u518d\u8a08\u7b97 \u2192 FCS\u3068\u306e\u6bd4\u8f03<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">CRC-32\u306f\u4ee5\u4e0b\u306e\u30a8\u30e9\u30fc\u691c\u51fa\u306b\u975e\u5e38\u306b\u6709\u52b9\u3067\u3059\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>\u30d3\u30c3\u30c8\u30a8\u30e9\u30fc<\/p><\/li><li><p>\u30d0\u30fc\u30b9\u30c8\u30a8\u30e9\u30fc<\/p><\/li><li><p>\u4fe1\u53f7\u52a3\u5316<\/p><\/li><li><p>\u4f1d\u9001\u30ce\u30a4\u30ba<\/p><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" >FCS\u304c\u30d5\u30ec\u30fc\u30e0\u672b\u5c3e\u306b\u914d\u7f6e\u3055\u308c\u308b\u7406\u7531<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">FCS\u306f\u3001CRC\u8a08\u7b97\u304c\u30d5\u30ec\u30fc\u30e0\u5168\u4f53\u306e\u30c7\u30fc\u30bf\u51e6\u7406\u5b8c\u4e86\u5f8c\u306b\u5b9f\u884c\u3055\u308c\u308b\u5fc5\u8981\u304c\u3042\u308b\u305f\u3081\u3001\u30a4\u30fc\u30b5\u30cd\u30c3\u30c8\u30d5\u30ec\u30fc\u30e0\u306e\u672b\u5c3e\u306b\u914d\u7f6e\u3055\u308c\u307e\u3059\u3002.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u51e6\u7406\u30d5\u30ed\u30fc\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\">\n<code>\u30d5\u30ec\u30fc\u30e0\u751f\u6210 \u2192 CRC\u8a08\u7b97 \u2192 FCS\u4ed8\u52a0<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u3053\u306e\u8a2d\u8a08\u306b\u3088\u308a\u3001\u30a4\u30fc\u30b5\u30cd\u30c3\u30c8\u6a5f\u5668\u306f\u30c7\u30fc\u30bf\u3092\u53d7\u8afe\u3059\u308b\u524d\u306b\u3001\u5b8c\u5168\u306a\u30d5\u30ec\u30fc\u30e0\u306e\u5b8c\u5168\u6027\u3092\u691c\u8a3c\u3067\u304d\u307e\u3059\u3002.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u5b9f\u969b\u306e\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u3067\u306f\u3001\u7e70\u308a\u8fd4\u3057\u767a\u751f\u3059\u308bFCS\u30a8\u30e9\u30fc\u306f\u3001\u901a\u5e38\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u7269\u7406\u5c64\u306e\u554f\u984c\u3092\u793a\u5506\u3057\u3066\u3044\u307e\u3059\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-table\">\n<table class=\"has-fixed-layout\">\n<colgroup><col style=\"width: 336px;\"\/><col style=\"min-width: 25px;\"\/><\/colgroup><tbody><tr><th colspan=\"1\" rowspan=\"1\" colwidth=\"336\"><p>\u4e00\u822c\u7684\u306a\u539f\u56e0<\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p>\u901a\u5e38\u306e\u7d50\u679c<\/p><\/th><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"336\"><p>\u640d\u50b7\u3057\u305f\u30a4\u30fc\u30b5\u30cd\u30c3\u30c8\u30b1\u30fc\u30d6\u30eb<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>CRC\/FCS\u30a8\u30e9\u30fc<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"336\"><p>\u6c5a\u308c\u305f\u30d5\u30a1\u30a4\u30d0\u30b3\u30cd\u30af\u30bf<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>\u30d1\u30b1\u30c3\u30c8\u7834\u640d<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"336\"><p>\u6545\u969c\u3057\u305fSFP\/QSFP\u5149\u30e2\u30b8\u30e5\u30fc\u30eb<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>\u4e0d\u898f\u5247\u306a\uff08\u65ad\u7d9a\u7684\u306a\uff09 <a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/ja\/glossary\/what-does-packet-loss-mean-for-your-internet-connection\/\">\u30ea\u30f3\u30af\u306e\u30e9\u30a4\u30c8\u304c\u6d88\u706f\u3057\u3066\u3044\u308b\u306e\u306f\u306a\u305c\u3067\u3059\u304b\uff1f<\/a><\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"336\"><p>EMI\u5e72\u6e09<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>\u30e9\u30f3\u30c0\u30e0\u306a\u30d5\u30ec\u30fc\u30e0\u7834\u640d<\/p><\/td><\/tr><\/tbody>\n<\/table>\n<\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u3053\u306e\u305f\u3081\u3001\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30a8\u30f3\u30b8\u30cb\u30a2\u306fFCS\u30a8\u30e9\u30fc\u3092\u3001\u30ea\u30f3\u30af\u54c1\u8cea\u3084\u5149\u30c8\u30e9\u30f3\u30b7\u30fc\u30d0\u306e\u554f\u984c\u3092\u65e9\u671f\u306b\u691c\u77e5\u3059\u308b\u305f\u3081\u306e\u5e83\u304f\u7528\u3044\u3089\u308c\u308b\u6307\u6a19\u3068\u3057\u3066\u3044\u307e\u3059\u3002.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" >\u2705 FCS\u306f\u30a4\u30fc\u30b5\u30cd\u30c3\u30c8\u30d5\u30ec\u30fc\u30e0\u5185\u3067\u3069\u306e\u3088\u3046\u306b\u52d5\u4f5c\u3057\u307e\u3059\u304b\uff1f<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u9001\u4fe1\u8005\u304c\u30a4\u30fc\u30b5\u30cd\u30c3\u30c8\u30d5\u30ec\u30fc\u30e0\u3092\u9001\u4fe1\u3059\u308b\u969b\u3001\u30d5\u30ec\u30fc\u30e0\u306e\u5185\u5bb9\u306b\u5bfe\u3057\u3066CRC\u3092\u8a08\u7b97\u3057\u3001\u305d\u306e\u7d50\u679c\u3092FCS\u30d5\u30a3\u30fc\u30eb\u30c9\u306b\u66f8\u304d\u8fbc\u307f\u307e\u3059\u3002\u53d7\u4fe1\u8005\u306f\u540c\u3058\u8a08\u7b97\u3092\u5b9f\u884c\u3057\u3001\u5f97\u3089\u308c\u305f\u5024\u3068\u6bd4\u8f03\u3057\u307e\u3059\u3002\u5024\u304c\u4e00\u81f4\u3059\u308c\u3070\u30d5\u30ec\u30fc\u30e0\u306f\u53d7\u3051\u5165\u308c\u3089\u308c\u3001\u4e00\u81f4\u3057\u306a\u3051\u308c\u3070\u30d5\u30ec\u30fc\u30e0\u306f\u7834\u68c4\u3055\u308c\u307e\u3059\u3002\u3053\u308c\u304cFCS\u304c\u9ad8\u901f\u306a\u30ec\u30a4\u30e4\u30fc2\u6574\u5408\u6027\u30c1\u30a7\u30c3\u30af\u3067\u3042\u308b\u7406\u7531\u3067\u3059\u3002.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large\"><img decoding=\"async\" width=\"1200\" height=\"675\" src=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/92ab1a95487c4af99647400a6d08c0d9.jpg\" alt=\" How Does FCS Work in Ethernet Frames?\" class=\"wp-image-7270\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/92ab1a95487c4af99647400a6d08c0d9.jpg 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/92ab1a95487c4af99647400a6d08c0d9-300x169.jpg 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/92ab1a95487c4af99647400a6d08c0d9-1024x576.jpg 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/92ab1a95487c4af99647400a6d08c0d9-768x432.jpg 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/92ab1a95487c4af99647400a6d08c0d9-18x10.jpg 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">FCS\u691c\u8a3c\u306f\u5b8c\u5168\u306b\u30ec\u30a4\u30e4\u30fc2\u3067\u884c\u308f\u308c\u3001\u901a\u5e38\u306fNIC\u3084\u30b9\u30a4\u30c3\u30c1\u306a\u3069\u306e\u30a4\u30fc\u30b5\u30cd\u30c3\u30c8\u30cf\u30fc\u30c9\u30a6\u30a7\u30a2\u306b\u3088\u3063\u3066\u51e6\u7406\u3055\u308c\u307e\u3059\u3002 <a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/ja\/glossary\/what-is-application-specific-integrated-circuit-asic\/\">ASIC<\/a>, \u304a\u3088\u3073\u5149\u30a4\u30f3\u30bf\u30d5\u30a7\u30fc\u30b9\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u4e0a\u4f4d\u30ec\u30a4\u30e4\u30fc\u306e\u30d7\u30ed\u30c8\u30b3\u30eb\u3084\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306b\u5f71\u97ff\u3092\u4e0e\u3048\u308b\u524d\u306b\u3001\u30ef\u30a4\u30e4\u30fc\u30b9\u30d4\u30fc\u30c9\u3067\u7834\u640d\u3057\u305f\u30d5\u30ec\u30fc\u30e0\u3092\u691c\u51fa\u3067\u304d\u307e\u3059\u3002.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >\u9001\u4fe1\u5074\u3067\u306eCRC\u751f\u6210<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u30a4\u30fc\u30b5\u30cd\u30c3\u30c8\u30d5\u30ec\u30fc\u30e0\u3092\u9001\u4fe1\u3059\u308b\u524d\u306b\u3001\u9001\u4fe1\u8005\u306f\u30d5\u30ec\u30fc\u30e0\u30c7\u30fc\u30bf\u304b\u3089CRC-32\u5024\u3092\u8a08\u7b97\u3057\u307e\u3059\u3002.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u57fa\u672c\u7684\u306a\u51e6\u7406\u624b\u9806\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\">\n<code>\u30a4\u30fc\u30b5\u30cd\u30c3\u30c8\u30d5\u30ec\u30fc\u30e0\u30c7\u30fc\u30bf \u2192 CRC-32\u8a08\u7b97 \u2192 FCS\u751f\u6210<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u751f\u6210\u3055\u308c\u305fCRC\u5024\u306f\u3001\u305d\u306e\u5f8c\u30d5\u30ec\u30fc\u30e0\u306e\u672b\u5c3e\u306bFCS\u30d5\u30a3\u30fc\u30eb\u30c9\u3068\u3057\u3066\u4ed8\u52a0\u3055\u308c\u307e\u3059\u3002.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u3053\u306e\u7c21\u7565\u5316\u3055\u308c\u305f\u30a4\u30fc\u30b5\u30cd\u30c3\u30c8\u30d5\u30ec\u30fc\u30e0\u51e6\u7406\u306b\u3088\u308a\u3001\u9001\u4fe1\u3055\u308c\u305f\u30d5\u30ec\u30fc\u30e0\u304c\u5f8c\u7d9a\u306e\u53d7\u4fe1\u30c7\u30d0\u30a4\u30b9\u306b\u3088\u3063\u3066\u6574\u5408\u6027\u691c\u8a3c\u53ef\u80fd\u3067\u3042\u308b\u3053\u3068\u304c\u4fdd\u8a3c\u3055\u308c\u307e\u3059\u3002.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >\u53d7\u4fe1\u5074\u3067\u306e\u691c\u8a3c<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u30d5\u30ec\u30fc\u30e0\u304c\u5230\u7740\u3059\u308b\u3068\u3001\u53d7\u4fe1\u30c7\u30d0\u30a4\u30b9\u306f\u53d7\u4fe1\u3057\u305f\u30d5\u30ec\u30fc\u30e0\u306e\u5185\u5bb9\u3092\u7528\u3044\u3066CRC-32\u5024\u3092\u518d\u8a08\u7b97\u3057\u307e\u3059\u3002.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u691c\u8a3c\u30d7\u30ed\u30bb\u30b9\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\">\n<code>\u53d7\u4fe1\u30d5\u30ec\u30fc\u30e0 \u2192 CRC\u306e\u518d\u8a08\u7b97 \u2192 FCS\u3068\u306e\u6bd4\u8f03<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">Two possible outcomes:<\/p>\n\n\n\n<figure class=\"wp-block-table\">\n<table class=\"has-fixed-layout\">\n<colgroup><col style=\"width: 317px;\"\/><col style=\"min-width: 25px;\"\/><\/colgroup><tbody><tr><th colspan=\"1\" rowspan=\"1\" colwidth=\"317\"><p>\u7d50\u679c<\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p>\u30a2\u30af\u30b7\u30e7\u30f3<\/p><\/th><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"317\"><p>CRC\u304cFCS\u3068\u4e00\u81f4<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>\u30d5\u30ec\u30fc\u30e0\u3092\u53d7\u4fe1<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"317\"><p>CRC\u304cFCS\u3068\u4e0d\u4e00\u81f4<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>\u30d5\u30ec\u30fc\u30e0\u3092\u62d2\u5426<\/p><\/td><\/tr><\/tbody>\n<\/table>\n<\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u3053\u306e\u30e1\u30ab\u30cb\u30ba\u30e0\u306b\u3088\u308a\u3001\u30a4\u30fc\u30b5\u30cd\u30c3\u30c8\u30c7\u30d0\u30a4\u30b9\u306f\u4f1d\u9001\u30a8\u30e9\u30fc\u3001\u4fe1\u53f7\u30ce\u30a4\u30ba\u3001\u307e\u305f\u306f\u7269\u7406\u5c64\u306e\u554f\u984c\u306b\u3088\u3063\u3066\u751f\u3058\u305f\u7834\u640d\u30d1\u30b1\u30c3\u30c8\u3092\u8fc5\u901f\u306b\u691c\u51fa\u3067\u304d\u307e\u3059\u3002.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >\u30d5\u30ec\u30fc\u30e0\u7834\u68c4\u52d5\u4f5c<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u518d\u8a08\u7b97\u3055\u308c\u305fCRC\u5024\u304c\u53d7\u4fe1\u3057\u305fFCS\u3068\u4e00\u81f4\u3057\u306a\u3044\u5834\u5408\u3001\u30a4\u30fc\u30b5\u30cd\u30c3\u30c8\u30d5\u30ec\u30fc\u30e0\u306f\u81ea\u52d5\u7684\u306b\u7834\u68c4\u3055\u308c\u307e\u3059\u3002.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u7834\u640d\u30d5\u30ec\u30fc\u30e0\u306e\u5178\u578b\u7684\u306a\u539f\u56e0\u306b\u306f\u4ee5\u4e0b\u304c\u3042\u308a\u307e\u3059\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>\u640d\u50b7\u3057\u305f\u30a4\u30fc\u30b5\u30cd\u30c3\u30c8\u30b1\u30fc\u30d6\u30eb<\/p><\/li><li><p>\u30d5\u30a1\u30a4\u30d0\u30b3\u30cd\u30af\u30bf\u304c\u6c5a\u308c\u3066\u3044\u308b<\/p><\/li><li><p><a target=\"_blank\" rel=\"\" href=\"https:\/\/www.rj45-modularjack.com\/news\/what-is-electromagnetic-interference-emi-and-why-it-matters-259389.html\">EMI\u5e72\u6e09<\/a><\/p><\/li><li><p>\u6545\u969c\u3057\u305fSFP\/QSFP\u5149\u30e2\u30b8\u30e5\u30fc\u30eb<\/p><\/li><li><p>\u9ad8\u901f\u30ea\u30f3\u30af\u306b\u304a\u3051\u308b\u4fe1\u53f7\u6574\u5408\u6027\u306e\u554f\u984c<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u305f\u3068\u3048\u3070\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\">\n<code>\u5143\u306e\u30c7\u30fc\u30bf \u2192 10101010<br>\u7834\u640d\u3057\u305f\u30c7\u30fc\u30bf \u2192 10101110<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u305f\u3063\u305f1\u30d3\u30c3\u30c8\u306e\u5909\u5316\u3067\u3082\u3001CRC\u691c\u8a3c\u306f\u5931\u6557\u3057\u307e\u3059\u3002.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u30a8\u30f3\u30bf\u30fc\u30d7\u30e9\u30a4\u30ba\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u304a\u3088\u3073\u30c7\u30fc\u30bf\u30bb\u30f3\u30bf\u30fc\u3067\u306f\u3001\u30b9\u30a4\u30c3\u30c1\u4e0a\u306eCRC\/FCS\u30ab\u30a6\u30f3\u30bf\u30fc\u306e\u5897\u52a0\u306f\u3001\u7279\u306b\u30d5\u30a1\u30a4\u30d0\u30fc\u30ea\u30f3\u30af\u304a\u3088\u3073\u5149\u30c8\u30e9\u30f3\u30b7\u30fc\u30d0\u63a5\u7d9a\u306b\u304a\u3044\u3066\u3001\u4e0b\u4f4d\u30ec\u30a4\u30e4\u30fc\u306e\u4f1d\u9001\u554f\u984c\u3092\u793a\u3059\u3053\u3068\u304c\u591a\u3044\u3067\u3059\u3002.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" >\u2705 FCS \u3068 CRC \u3068 TCP \u30c1\u30a7\u30c3\u30af\u30b5\u30e0\uff1a\u9055\u3044\u306f\u4f55\u3067\u3059\u304b\uff1f<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">CRC \u306f\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0\u3067\u3042\u308a\u3001FCS \u306f\u30a4\u30fc\u30b5\u30cd\u30c3\u30c8\u30d5\u30ec\u30fc\u30e0\u5185\u306b CRC \u7d50\u679c\u3092\u683c\u7d0d\u3059\u308b\u30d5\u30a3\u30fc\u30eb\u30c9\u3067\u3059\u3002TCP \u30c1\u30a7\u30c3\u30af\u30b5\u30e0\u306f\u7570\u306a\u308a\u307e\u3059\uff1a\u3053\u308c\u306f\u30ec\u30a4\u30e4\u30fc 4 \u3067\u52d5\u4f5c\u3057\u3001TCP \u30bb\u30b0\u30e1\u30f3\u30c8\u3092\u4fdd\u8b77\u3057\u307e\u3059\u304c\u3001FCS \u306f\u30ec\u30a4\u30e4\u30fc 2 \u306e\u30d5\u30ec\u30fc\u30e0\u3092\u4fdd\u8b77\u3057\u307e\u3059\u3002\u3053\u308c\u3089\u306e\u30c1\u30a7\u30c3\u30af\u306f\u7570\u306a\u308b\u30ec\u30a4\u30e4\u30fc\u3067\u5b9f\u884c\u3055\u308c\u308b\u305f\u3081\u3001\u305d\u308c\u305e\u308c\u7570\u306a\u308b\u4fe1\u983c\u6027\u554f\u984c\u3092\u89e3\u6c7a\u3057\u3001\u76f8\u4e92\u4ea4\u63db\u53ef\u80fd\u3068\u306f\u898b\u306a\u3057\u3066\u306f\u306a\u308a\u307e\u305b\u3093\u3002.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1200\" height=\"675\" src=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/7e27c0cf2856496d8df3941e8d3d96e0.jpg\" alt=\"FCS vs. CRC vs. TCP Checksum: What Is the Difference?\" class=\"wp-image-7271\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/7e27c0cf2856496d8df3941e8d3d96e0.jpg 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/7e27c0cf2856496d8df3941e8d3d96e0-300x169.jpg 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/7e27c0cf2856496d8df3941e8d3d96e0-1024x576.jpg 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/7e27c0cf2856496d8df3941e8d3d96e0-768x432.jpg 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/7e27c0cf2856496d8df3941e8d3d96e0-18x10.jpg 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\" >CRC \u3068\u306f\u4f55\u3067\u3059\u304b\uff1f<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">CRC\uff08\u5de1\u56de\u5197\u9577\u691c\u67fb\uff09\u306f\u3001\u4f1d\u9001\u30a8\u30e9\u30fc\u3092\u691c\u51fa\u3059\u308b\u305f\u3081\u306b\u4f7f\u7528\u3055\u308c\u308b\u6570\u5b66\u7684\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0\u3067\u3059\u3002.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u30a4\u30fc\u30b5\u30cd\u30c3\u30c8\u306b\u304a\u3051\u308b CRC\uff1aCRC-32<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">CRC \u306f\u30a4\u30fc\u30b5\u30cd\u30c3\u30c8\u30d5\u30ec\u30fc\u30e0\u306e\u30d0\u30a4\u30ca\u30ea\u5185\u5bb9\u3092\u5206\u6790\u3057\u3001\u4e00\u610f\u306e\u691c\u8a3c\u5024\u3092\u751f\u6210\u3057\u307e\u3059\u3002.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u57fa\u672c\u7684\u306a\u51e6\u7406\u624b\u9806\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\">\n<code>\u30d5\u30ec\u30fc\u30e0\u30c7\u30fc\u30bf \u2192 CRC \u8a08\u7b97 \u2192 \u7d50\u679c\u3092 FCS \u306b\u683c\u7d0d<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">CRC \u81ea\u4f53\u306f\u53ef\u8996\u306e\u30d5\u30ec\u30fc\u30e0\u30d5\u30a3\u30fc\u30eb\u30c9\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002\u5358\u306b FCS \u5024\u3092\u751f\u6210\u3059\u308b\u305f\u3081\u306b\u7528\u3044\u3089\u308c\u308b\u8a08\u7b97\u624b\u6cd5\u3067\u3059\u3002.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >FCS \u3068\u306f\u4f55\u3067\u3059\u304b\uff1f<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">FCS\uff08\u30d5\u30ec\u30fc\u30e0\u30c1\u30a7\u30c3\u30af\u30b7\u30fc\u30b1\u30f3\u30b9\uff09\u306f\u3001\u30a4\u30fc\u30b5\u30cd\u30c3\u30c8\u30d5\u30ec\u30fc\u30e0\u672b\u5c3e\u306b\u4f4d\u7f6e\u3059\u308b\u5b9f\u969b\u306e 4 \u30d0\u30a4\u30c8\u306e\u30d5\u30a3\u30fc\u30eb\u30c9\u3067\u3059\u3002.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u7c21\u7565\u5316\u3055\u308c\u305f\u69cb\u9020\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\">\n<code>| \u30a4\u30fc\u30b5\u30cd\u30c3\u30c8\u30d8\u30c3\u30c0\u30fc | \u30da\u30a4\u30ed\u30fc\u30c9 | FCS |<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">FCS \u306b\u306f\u9001\u4fe1\u8005\u304c\u8a08\u7b97\u3057\u305f CRC \u7d50\u679c\u304c\u683c\u7d0d\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u53d7\u4fe1\u30c7\u30d0\u30a4\u30b9\u306f CRC \u3092\u518d\u8a08\u7b97\u3057\u3001\u53d7\u4fe1\u3057\u305f FCS \u5024\u3068\u6bd4\u8f03\u3057\u3066\u30d5\u30ec\u30fc\u30e0\u306e\u5b8c\u5168\u6027\u3092\u691c\u8a3c\u3057\u307e\u3059\u3002.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u5024\u304c\u4e00\u81f4\u3057\u306a\u3044\u5834\u5408\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\">\n<code>\u30d5\u30ec\u30fc\u30e0\u306f\u62d2\u5426\u3055\u308c\u307e\u3059<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u3053\u306e\u30d7\u30ed\u30bb\u30b9\u306b\u3088\u308a\u3001\u30a4\u30fc\u30b5\u30cd\u30c3\u30c8\u30c7\u30d0\u30a4\u30b9\u306f\u3001\u30b1\u30fc\u30d6\u30eb\u969c\u5bb3\u3001\u5149\u30e2\u30b8\u30e5\u30fc\u30eb\u306e\u4e0d\u5b89\u5b9a\u6027\u3001\u4fe1\u53f7\u30ce\u30a4\u30ba\u3001\u307e\u305f\u306f\u4f1d\u9001\u30a8\u30e9\u30fc\u306b\u3088\u3063\u3066\u5f15\u304d\u8d77\u3053\u3055\u308c\u305f\u7834\u640d\u30d5\u30ec\u30fc\u30e0\u3092\u8fc5\u901f\u306b\u691c\u51fa\u3067\u304d\u307e\u3059\u3002.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >TCP \u30c1\u30a7\u30c3\u30af\u30b5\u30e0\u3068\u306f\u4f55\u3067\u3059\u304b\uff1f<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">TCP \u30c1\u30a7\u30c3\u30af\u30b5\u30e0\u306f\u3001TCP \u30d7\u30ed\u30c8\u30b3\u30eb\u304c\u4f7f\u7528\u3059\u308b\u30ec\u30a4\u30e4\u30fc 4 \u306e\u6574\u5408\u6027\u691c\u67fb\u6a5f\u69cb\u3067\u3059\u3002.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">FCS \u306f\u30ed\u30fc\u30ab\u30eb\u30ea\u30f3\u30af\u4e0a\u306e\u5358\u4e00\u306e\u30a4\u30fc\u30b5\u30cd\u30c3\u30c8\u30d5\u30ec\u30fc\u30e0\u306e\u307f\u3092\u4fdd\u8b77\u3059\u308b\u306e\u306b\u5bfe\u3057\u3001TCP \u30c1\u30a7\u30c3\u30af\u30b5\u30e0\u306f\u30a8\u30f3\u30c9\u30c4\u30fc\u30a8\u30f3\u30c9\u306e\u901a\u4fe1\u7d4c\u8def\u5168\u4f53\u306b\u308f\u305f\u3063\u3066 TCP \u30bb\u30b0\u30e1\u30f3\u30c8\u3092\u4fdd\u8b77\u3057\u307e\u3059\u3002.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">TCP \u30c1\u30a7\u30c3\u30af\u30b5\u30e0\u304c\u691c\u8a3c\u3059\u308b\u3082\u306e\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>TCP \u30d8\u30c3\u30c0\u30fc<\/p><\/li><li><p>\u30da\u30a4\u30ed\u30fc\u30c9\u30c7\u30fc\u30bf<\/p><\/li><li><p>\u30d1\u30bb\u30a6\u30c9\u30d8\u30c3\u30c0\u30fc\u60c5\u5831<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u7c21\u7565\u5316\u3055\u308c\u305f\u30d7\u30ed\u30bb\u30b9\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\">\n<code>TCP \u30bb\u30b0\u30e1\u30f3\u30c8 \u2192 \u30c1\u30a7\u30c3\u30af\u30b5\u30e0\u8a08\u7b97 \u2192 \u53d7\u4fe1\u5074\u3067\u306e\u691c\u8a3c<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u30a4\u30fc\u30b5\u30cd\u30c3\u30c8\u30d5\u30ec\u30fc\u30e0\u304c FCS \u691c\u67fb\u306b\u5408\u683c\u3057\u305f\u3068\u3057\u3066\u3082\u3001\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30b9\u30bf\u30c3\u30af\u306e\u4ed6\u306e\u5834\u6240\u3067\u7834\u640d\u304c\u767a\u751f\u3057\u305f\u5834\u5408\u3001\u5f8c\u7d9a\u306e TCP \u30c1\u30a7\u30c3\u30af\u30b5\u30e0\u691c\u8a3c\u306f\u4f9d\u7136\u3068\u3057\u3066\u5931\u6557\u3059\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >FCS\u3001CRC\u3001TCP \u30c1\u30a7\u30c3\u30af\u30b5\u30e0\u306e\u4e3b\u306a\u9055\u3044<\/h3>\n\n\n\n<figure class=\"wp-block-table\">\n<table class=\"has-fixed-layout\">\n<colgroup><col style=\"min-width: 25px;\"\/><col style=\"min-width: 25px;\"\/><col style=\"min-width: 25px;\"\/><col style=\"min-width: 25px;\"\/><\/colgroup><tbody><tr><th colspan=\"1\" rowspan=\"1\"><p>\u9805\u76ee<\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p>OSI\u30ec\u30a4\u30e4\u30fc<\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p>\u4fdd\u8b77\u5bfe\u8c61<\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p>\u5b58\u5728\u5834\u6240<\/p><\/th><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p>FCS<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>\u30ec\u30a4\u30e4\u30fc2<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>\u30a4\u30fc\u30b5\u30cd\u30c3\u30c8\u30d5\u30ec\u30fc\u30e0<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>\u30a4\u30fc\u30b5\u30cd\u30c3\u30c8\u30d5\u30ec\u30fc\u30e0\u306e\u672b\u5c3e<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p>CRC<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>\u30ec\u30a4\u30e4\u30fc 2 \u306e\u6982\u5ff5<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>\u30a8\u30e9\u30fc\u691c\u51fa\u8a08\u7b97<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>FCS \u306b\u8a08\u7b97\u304a\u3088\u3073\u683c\u7d0d\u3055\u308c\u308b<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p>TCP \u30c1\u30a7\u30c3\u30af\u30b5\u30e0<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>\u30ec\u30a4\u30e4\u30fc 4<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>TCP \u30bb\u30b0\u30e1\u30f3\u30c8<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>TCP \u30d8\u30c3\u30c0\u30fc<\/p><\/td><\/tr><\/tbody>\n<\/table>\n<\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" >\u2705 \u30b9\u30a4\u30c3\u30c1\u3001NIC\u3001\u30d5\u30a1\u30a4\u30d0\u30fc\u30ea\u30f3\u30af\u3001\u304a\u3088\u3073\u5149\u30e2\u30b8\u30e5\u30fc\u30eb\u3067 FCS \u30a8\u30e9\u30fc\u304c\u767a\u751f\u3059\u308b\u7406\u7531\u306f\uff1f<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">FCS \u30a8\u30e9\u30fc\u306f\u901a\u5e38\u3001\u30d5\u30ec\u30fc\u30e0\u304c\u7d4c\u8def\u306e\u3069\u3053\u304b\u3067\u7834\u640d\u3057\u3066\u5230\u9054\u3057\u305f\u3053\u3068\u3092\u610f\u5473\u3057\u307e\u3059\u3002\u5b9f\u969b\u306e\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u3067\u306f\u3001\u6839\u672c\u539f\u56e0\u306f\u7269\u7406\u5c64\u307e\u305f\u306f\u30ea\u30f3\u30af\u54c1\u8cea\u306b\u95a2\u9023\u3059\u308b\u3053\u3068\u304c\u591a\u304f\u3001\u4f8b\u3068\u3057\u3066\u4e0d\u826f\u306a\u30b1\u30fc\u30d6\u30eb\u3001\u6c5a\u308c\u305f\u30d5\u30a1\u30a4\u30d0\u30fc\u63a5\u7d9a\u5b50\u3001\u4e92\u63db\u6027\u306e\u306a\u3044\u5149\u5b66\u90e8\u54c1\u3001\u4e0d\u9069\u5207\u306a\u30a4\u30f3\u30bf\u30fc\u30d5\u30ec\u30fc\u30e0\u30ae\u30e3\u30c3\u30d7\u52d5\u4f5c\u3001\u3042\u308b\u3044\u306f\u6545\u969c\u3057\u3064\u3064\u3042\u308b\u5149\u30e2\u30b8\u30e5\u30fc\u30eb\u306a\u3069\u304c\u6319\u3052\u3089\u308c\u307e\u3059\u3002Cisco \u306e\u30c9\u30ad\u30e5\u30e1\u30f3\u30c8\u306b\u3088\u308b\u3068\u3001CRC\/FCS \u30a8\u30e9\u30fc\u306f\u63a5\u7d9a\u3055\u308c\u305f\u30c7\u30d0\u30a4\u30b9\u4e0a\u3067\u5165\u529b\u30a8\u30e9\u30fc\u307e\u305f\u306f\u30d1\u30b1\u30c3\u30c8\u30ed\u30b9\u3068\u3057\u3066\u73fe\u308c\u308b\u3053\u3068\u304c\u3042\u308a\u3001\u554f\u984c\u306f\u4e0a\u4f4d\u30ec\u30a4\u30e4\u30fc\u306e\u30d7\u30ed\u30c8\u30b3\u30eb\u3067\u306f\u306a\u304f\u3001\u3080\u3057\u308d\u30ea\u30f3\u30af\u7d4c\u8def\u306b\u5b58\u5728\u3059\u308b\u3053\u3068\u304c\u591a\u3044\u3068\u3055\u308c\u3066\u3044\u307e\u3059\u3002.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1200\" height=\"675\" src=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/40fb162a76634c70b44172d8cc18c143.jpg\" alt=\"Why Do FCS Errors Happen on Switches, NICs, Fiber Links, and Optical Modules?\" class=\"wp-image-7272\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/40fb162a76634c70b44172d8cc18c143.jpg 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/40fb162a76634c70b44172d8cc18c143-300x169.jpg 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/40fb162a76634c70b44172d8cc18c143-1024x576.jpg 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/40fb162a76634c70b44172d8cc18c143-768x432.jpg 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/40fb162a76634c70b44172d8cc18c143-18x10.jpg 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\" >\u9285\u7dda\u30b1\u30fc\u30d6\u30eb\u306e\u554f\u984c<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u640d\u50b7\u307e\u305f\u306f\u4f4e\u54c1\u8cea\u306e\u30a4\u30fc\u30b5\u30cd\u30c3\u30c8\u30b1\u30fc\u30d6\u30eb\u306f\u3001FCS \u30a8\u30e9\u30fc\u306e\u6700\u3082\u4e00\u822c\u7684\u306a\u539f\u56e0\u306e\u4e00\u3064\u3067\u3059\u3002.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u5178\u578b\u7684\u306a\u554f\u984c\u306b\u306f\u4ee5\u4e0b\u304c\u542b\u307e\u308c\u307e\u3059\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>\u5207\u65ad\u3055\u308c\u305f\u30b1\u30fc\u30d6\u30eb\u30da\u30a2<\/p><\/li><li><p>\u4e0d\u5341\u5206\u306a\u30b7\u30fc\u30eb\u30c9<\/p><\/li><li><p>\u904e\u5ea6\u306a\u30b1\u30fc\u30d6\u30eb\u66f2\u3052<\/p><\/li><li><p>\u4e0d\u9069\u5207\u306a\u30b1\u30fc\u30d6\u30eb\u30ab\u30c6\u30b4\u30ea<\/p><\/li><li><p>\u30ed\u30fc\u30ba\u306a RJ45 \u63a5\u7d9a<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u305f\u3068\u3048\u3070\u3001\u52a3\u5316\u3057\u305f <a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/ja\/knowledge-center\/cat5e-vs-cat6-vs-cat7-ethernet-cable\/\">Cat5e \u30b1\u30fc\u30d6\u30eb<\/a> \u304c 10GBASE-T \u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u3092\u4f1d\u9001\u3057\u3066\u3044\u308b\u5834\u5408\u3001\u4f1d\u9001\u4e2d\u306b\u30a4\u30fc\u30b5\u30cd\u30c3\u30c8\u30d5\u30ec\u30fc\u30e0\u3092\u7834\u640d\u3055\u305b\u308b\u30d3\u30c3\u30c8\u30a8\u30e9\u30fc\u3092\u5f15\u304d\u8d77\u3053\u3059\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >\u30d5\u30a1\u30a4\u30d0\u30fc\u306e\u6c5a\u67d3<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u6c5a\u308c\u3084\u640d\u50b7\u3092\u53d7\u3051\u305f\u30d5\u30a1\u30a4\u30d0\u30fc\u63a5\u7d9a\u5b50\u306f\u3001\u30c7\u30fc\u30bf\u30bb\u30f3\u30bf\u30fc\u306b\u304a\u3051\u308b CRC\/FCS \u30a8\u30e9\u30fc\u306e\u4e3b\u306a\u539f\u56e0\u3067\u3059\u3002.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">LC \u3084 MPO \u63a5\u7d9a\u5b50\u4e0a\u306e\u5fae\u5c0f\u306a\u307b\u3053\u308a\u7c92\u5b50\u3067\u3055\u3048\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u5f71\u97ff\u3092\u53ca\u307c\u3059\u3053\u3068\u304c\u3042\u308a\u307e\u3059\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>\u5149\u4fe1\u53f7\u306e\u6e1b\u8870<\/p><\/li><li><p>\u53cd\u5c04\u640d\u5931<\/p><\/li><li><p>\u30d3\u30c3\u30c8\u30a8\u30e9\u30fc\u7387\uff08BER\uff09\u306e\u5897\u52a0<\/p><\/li><li><p>\u30d1\u30b1\u30c3\u30c8\u7834\u640d<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u4e00\u822c\u7684\u306a\u6c5a\u67d3\u6e90\u306b\u306f\u4ee5\u4e0b\u304c\u542b\u307e\u308c\u307e\u3059\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>LC \u30b3\u30cd\u30af\u30bf\u4e0a\u306e\u307b\u3053\u308a<\/p><\/li><li><p>\u30ab\u30d5\u30a7\u30eb\u304c\u50b7\u3064\u3044\u305f\u3082\u306e<\/p><\/li><li><p>\u4e0d\u9069\u5207\u306a\u6e05\u6383\u624b\u9806<\/p><\/li><li><p>\u6c5a\u67d3\u3055\u308c\u305f MPO \u30c8\u30e9\u30f3\u30af<\/p><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" >\u5149\u30e2\u30b8\u30e5\u30fc\u30eb\u306e\u4e92\u63db\u6027<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u4e92\u63db\u6027\u304c\u306a\u3044\u3001\u307e\u305f\u306f\u4e0d\u5b89\u5b9a\u306a\u5149\u30e2\u30b8\u30e5\u30fc\u30eb\u306f\u3001\u30a8\u30f3\u30bf\u30fc\u30d7\u30e9\u30a4\u30ba\u74b0\u5883\u306b\u304a\u3044\u3066\u983b\u7e41\u306b FCS \u3084 CRC \u30a8\u30e9\u30fc\u3092\u5f15\u304d\u8d77\u3053\u3057\u307e\u3059\u3002 <a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/ja\/knowledge-center\/what-is-a-network-switch\/\">\u30b9\u30a4\u30c3\u30c1<\/a> \u304a\u3088\u3073 <a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/ja\/knowledge-center\/what-is-servers-components-types-functions\/\">\u30b5\u30fc\u30d0\u30fc<\/a>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u5f71\u97ff\u3092\u53d7\u3051\u308b\u5149\u5b66\u90e8\u54c1\u306b\u306f\u4ee5\u4e0b\u304c\u542b\u307e\u308c\u307e\u3059\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><a target=\"_self\" href=\"https:\/\/www.l-p.com\/products\/478230.htm\">SFP\u30e2\u30b8\u30e5\u30fc\u30eb\u3092\u4f7f\u7528\u3057\u3066\uff09\u306b\u63a5\u7d9a\u3057\u307e\u3059\u3002<\/a><\/p><\/li><li><p><a target=\"_self\" href=\"https:\/\/www.l-p.com\/products\/475415.htm\">SFP+\u30c8\u30e9\u30f3\u30b7\u30fc\u30d0\u30fc<\/a><\/p><\/li><li><p>QSFP\/QSFP28 \u5149\u30e2\u30b8\u30e5\u30fc\u30eb<\/p><\/li><li><p><a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/ja\/knowledge-center\/direct-attach-cables-dac-in-networking\/\">\u306f\u3001\u7d71\u5408\u30b3\u30cd\u30af\u30bf\u4ed8\u304d\u306e\u30d1\u30c3\u30b7\u30d6\u9285\u30c4\u30a4\u30f3\u30a2\u30af\u30b9\u30b1\u30fc\u30d6\u30eb\u3092\u4f7f\u7528\u3057\u307e\u3059\u3002<\/a> \u304a\u3088\u3073 <a target=\"_self\" href=\"https:\/\/resourceslp.szlogic.cn\/ja\/knowledge-center\/aoc-explained-active-optical-cable-benefits-uses-advancements-guide\/\">\u306f\u3001\u30b3\u30cd\u30af\u30bf\u5185\u90e8\u3067\u80fd\u52d5\u7684\u306a\u96fb\u6c17\uff0d\u5149\u5909\u63db\u3092\u5b9f\u884c\u3057\u3001<\/a> \u30b1\u30fc\u30d6\u30eb<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u4e3b\u306a\u539f\u56e0\u306f\u6b21\u306e\u3068\u304a\u308a\u3067\u3059\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>\u30d9\u30f3\u30c0\u30fc\u9593\u306e\u4e92\u63db\u6027\u554f\u984c<\/p><\/li><li><p>\u4e0d\u9069\u5207\u306a <a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/ja\/knowledge-center\/how-eeprom-powers-sfp-and-qsfp-optical-modules\/\">EEPROM<\/a> \u30d1\u30e9\u30e1\u30fc\u30bf<\/p><\/li><li><p>\u4e0d\u5b89\u5b9a\u306a\u30ec\u30fc\u30b6\u51fa\u529b<\/p><\/li><li><p>\u975e\u5e38\u306b\u72ed\u3044 <a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/ja\/glossary\/digital-signal-processor-functionality-in-optical-transceivers\/\">DSP<\/a> \u30c1\u30e5\u30fc\u30cb\u30f3\u30b0<\/p><\/li><li><p>\u8a8d\u8a3c\u3055\u308c\u3066\u3044\u306a\u3044\u30c8\u30e9\u30f3\u30b7\u30fc\u30d0\u30fc<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u4f8b\u793a\u3055\u308c\u308b\u30b7\u30ca\u30ea\u30aa\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-table\">\n<table class=\"has-fixed-layout\">\n<colgroup><col style=\"width: 337px;\"\/><col style=\"min-width: 25px;\"\/><\/colgroup><tbody><tr><th colspan=\"1\" rowspan=\"1\" colwidth=\"337\"><p>\u5149\u5b66\u7684\u554f\u984c<\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p>\u5178\u578b\u7684\u306a\u5f71\u97ff<\/p><\/th><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"337\"><p>\u4e92\u63db\u6027\u306e\u306a\u3044 SFP+ \u30e2\u30b8\u30e5\u30fc\u30eb<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>\u65ad\u7d9a\u7684\u306a CRC \u30a8\u30e9\u30fc<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"337\"><p>\u6545\u969c\u3057\u3064\u3064\u3042\u308b QSFP28 \u5149\u30e2\u30b8\u30e5\u30fc\u30eb<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>\u30d1\u30b1\u30c3\u30c8\u7834\u640d<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"337\"><p>\u54c1\u8cea\u306e\u4f4e\u3044 DAC \u30b1\u30fc\u30d6\u30eb<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>\u30b7\u30b0\u30ca\u30eb\u30a4\u30f3\u30c6\u30b0\u30ea\u30c6\u30a3\u306e\u52a3\u5316<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"337\"><p>\u904e\u71b1\u3057\u305f\u5149\u30e2\u30b8\u30e5\u30fc\u30eb<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>\u30e9\u30f3\u30c0\u30e0\u306a\u30d5\u30ec\u30fc\u30e0\u30c9\u30ed\u30c3\u30d7<\/p><\/td><\/tr><\/tbody>\n<\/table>\n<\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u591a\u304f\u306e\u5b9f\u969b\u306e\u5c55\u958b\u74b0\u5883\u3067\u306f\u3001\u5149\u30c8\u30e9\u30f3\u30b7\u30fc\u30d0\u30fc\u3092\u4ea4\u63db\u3059\u308b\u3053\u3068\u3067\u3001\u6301\u7d9a\u7684\u306a FCS \u554f\u984c\u304c\u76f4\u3061\u306b\u89e3\u6c7a\u3055\u308c\u307e\u3059\u3002.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >\u6e29\u5ea6\u304a\u3088\u3073\u7d4c\u5e74\u52a3\u5316<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u5149\u5b66\u30e2\u30b8\u30e5\u30fc\u30eb\u304a\u3088\u3073NIC\u306f\u3001\u6e29\u5ea6\u306e\u4e0a\u6607\u3084\u90e8\u54c1\u306e\u7d4c\u5e74\u52a3\u5316\u306b\u3088\u308a\u4e0d\u5b89\u5b9a\u306b\u306a\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u7d4c\u5e74\u52a3\u5316\u306b\u8d77\u56e0\u3059\u308b\u4e00\u822c\u7684\u306a\u554f\u984c\u306b\u306f\u4ee5\u4e0b\u304c\u542b\u307e\u308c\u307e\u3059\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>\u30ec\u30fc\u30b6\u51fa\u529b\u306e\u52a3\u5316<\/p><\/li><li><p>\u6e29\u5ea6\u30c9\u30ea\u30d5\u30c8<\/p><\/li><li><p>BER\u306e\u5897\u52a0<\/p><\/li><li><p>\u4e0d\u5b89\u5b9a\u306a <a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/ja\/glossary\/clock-and-data-recovery-in-modern-communication-systems\/\">\u30af\u30ed\u30c3\u30af\u5fa9\u5143<\/a><\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u4e00\u822c\u7684\u306a\u52d5\u4f5c\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-table\">\n<table class=\"has-fixed-layout\">\n<colgroup><col style=\"width: 310px;\"\/><col style=\"min-width: 25px;\"\/><\/colgroup><tbody><tr><th colspan=\"1\" rowspan=\"1\" colwidth=\"310\"><p>\u6761\u4ef6<\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p>\u4e00\u822c\u7684\u306a\u75c7\u72b6<\/p><\/th><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"310\"><p>\u30b9\u30a4\u30c3\u30c1\u306e\u9ad8\u6e29<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>CRC\u306e\u6025\u5897<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"310\"><p>\u7d4c\u5e74\u52a3\u5316\u3057\u305fSFP\u30e2\u30b8\u30e5\u30fc\u30eb<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>\u65ad\u7d9a\u7684\u306a\u30d1\u30b1\u30c3\u30c8\u30ed\u30b9<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"310\"><p>\u9577\u6642\u9593\u306e\u7a3c\u50cd<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u30a8\u30e9\u30fc\u306e\u5897\u52a0<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"310\"><p>\u9ad8\u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u8ca0\u8377<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>\u30ea\u30f3\u30af\u306e\u4e0d\u5b89\u5b9a<\/p><\/td><\/tr><\/tbody>\n<\/table>\n<\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u305d\u306e\u305f\u3081\u3001 <a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/ja\/knowledge-center\/what-is-a-data-center\/\">\u7d71\u5408\u578b<\/a> \u904b\u7528\u8005\u306f\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306aDOM\/DDM\u5024\u3092\u76e3\u8996\u3059\u308b\u3053\u3068\u304c\u591a\u3044\u3067\u3059\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>\u9001\u4fe1\u96fb\u529b\uff08Tx power\uff09<\/p><\/li><li><p>\u53d7\u4fe1\u96fb\u529b\uff08Rx power\uff09<\/p><\/li><li><p>\u30e2\u30b8\u30e5\u30fc\u30eb\u6e29\u5ea6<\/p><\/li><li><p>\u30d0\u30a4\u30a2\u30b9\u96fb\u6d41<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u5b8c\u5168\u306a\u30ea\u30f3\u30af\u969c\u5bb3\u304c\u767a\u751f\u3059\u308b\u524d\u306b\u3001\u6545\u969c\u3057\u3064\u3064\u3042\u308b\u5149\u5b66\u90e8\u54c1\u3092\u7279\u5b9a\u3059\u308b\u305f\u3081\u306b\u3002.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >\u30d1\u30b1\u30c3\u30c8\u9593\u30ae\u30e3\u30c3\u30d7\uff08Interpacket Gap\uff09\u304a\u3088\u3073\u30bf\u30a4\u30df\u30f3\u30b0\u52d5\u4f5c<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u30a4\u30fc\u30b5\u30cd\u30c3\u30c8\u306e\u30bf\u30a4\u30df\u30f3\u30b0\u52d5\u4f5c\u304c\u4e0d\u5b89\u5b9a\u306b\u306a\u308b\u3068\u3001FCS\u30a8\u30e9\u30fc\u3082\u767a\u751f\u3057\u307e\u3059\u3002.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u73fe\u4ee3\u306e\u30a4\u30fc\u30b5\u30cd\u30c3\u30c8\u30ea\u30f3\u30af\u306f\u3001\u9069\u5207\u306a\u30d1\u30b1\u30c3\u30c8\u9593\u30ae\u30e3\u30c3\u30d7\uff08IPG\uff09\u3092\u542b\u3080\u30d5\u30ec\u30fc\u30e0\u9593\u306e\u6b63\u78ba\u306a\u30bf\u30a4\u30df\u30f3\u30b0\u306b\u4f9d\u5b58\u3057\u3066\u3044\u307e\u3059\u3002\u30d5\u30ec\u30fc\u30e0\u304c\u904e\u5270\u306b\u8fd1\u63a5\u3057\u3066\u9001\u4fe1\u3055\u308c\u305f\u308a\u3001\u30bf\u30a4\u30df\u30f3\u30b0\u540c\u671f\u304c\u4e0d\u5b89\u5b9a\u306b\u306a\u308b\u3068\u3001\u53d7\u4fe1\u5074\u304c\u30d5\u30ec\u30fc\u30e0\u5883\u754c\u3092\u8aa4\u3063\u3066\u51e6\u7406\u3059\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u8003\u3048\u3089\u308c\u308b\u539f\u56e0\u306b\u306f\u4ee5\u4e0b\u304c\u542b\u307e\u308c\u307e\u3059\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>\u4e0d\u5177\u5408\u306e\u3042\u308bNIC\u30d5\u30a1\u30fc\u30e0\u30a6\u30a7\u30a2<\/p><\/li><li><p>PHY\u306e\u30bf\u30a4\u30df\u30f3\u30b0\u4e0d\u5b89\u5b9a\u6027<\/p><\/li><li><p>\u30b9\u30a4\u30c3\u30c1ASIC\u306e\u554f\u984c<\/p><\/li><li><p>\u9ad8\u901f\u30ea\u30f3\u30af\u306b\u304a\u3051\u308b\u4fe1\u53f7\u30b8\u30c3\u30bf<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u7c21\u7565\u5316\u3055\u308c\u305f\u30d7\u30ed\u30bb\u30b9\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\">\n<code>\u30bf\u30a4\u30df\u30f3\u30b0\u4e0d\u5b89\u5b9a\u6027<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u30b1\u30fc\u30d6\u30eb\u3084\u5149\u56de\u7dda\u306e\u554f\u984c\u306b\u6bd4\u3079\u3066\u3001\u30bf\u30a4\u30df\u30f3\u30b0\u95a2\u9023\u306eFCS\u554f\u984c\u306f\u767a\u751f\u983b\u5ea6\u304c\u4f4e\u3044\u3082\u306e\u306e\u3001\u4ee5\u4e0b\u306e\u9ad8\u901f\u30a4\u30fc\u30b5\u30cd\u30c3\u30c8\u74b0\u5883\u3067\u306f\u3088\u308a\u91cd\u8981\u306b\u306a\u308a\u307e\u3059\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>100G\u30a4\u30fc\u30b5\u30cd\u30c3\u30c8<\/p><\/li><li><p>400G\u30a4\u30fc\u30b5\u30cd\u30c3\u30c8<\/p><\/li><li><p>AI\u30af\u30e9\u30b9\u30bf\u30fc\u30cd\u30c3\u30c8\u30ef\u30fc\u30af<\/p><\/li><li><p>\u30cf\u30a4\u30d1\u30fc\u30b9\u30b1\u30fc\u30eb\u30c7\u30fc\u30bf\u30bb\u30f3\u30bf\u30fc<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u3053\u308c\u3089\u306e\u74b0\u5883\u3067\u306f\u3001\u3054\u304f\u308f\u305a\u304b\u306a\u30bf\u30a4\u30df\u30f3\u30b0\u307e\u305f\u306f\u4fe1\u53f7\u5b8c\u5168\u6027\u306e\u554f\u984c\u3067\u3082\u3001\u30b9\u30a4\u30c3\u30c1\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u5168\u4f53\u3067CRC\/FCS\u30ab\u30a6\u30f3\u30bf\u304c\u6025\u901f\u306b\u5897\u52a0\u3059\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" >\u2705 \u5b9f\u969b\u306e\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306b\u304a\u3051\u308bCRC\/FCS\u30a8\u30e9\u30fc\u306e\u30c8\u30e9\u30d6\u30eb\u30b7\u30e5\u30fc\u30c6\u30a3\u30f3\u30b0\u65b9\u6cd5<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">CRC\/FCS\u30a8\u30e9\u30fc\u3092\u30c8\u30e9\u30d6\u30eb\u30b7\u30e5\u30fc\u30c6\u30a3\u30f3\u30b0\u3059\u308b\u6700\u3082\u52b9\u679c\u7684\u306a\u65b9\u6cd5\u306f\u3001\u7269\u7406\u30ea\u30f3\u30af\u3092\u6bb5\u968e\u7684\u306b\u5206\u96e2\u3057\u3066\u7279\u5b9a\u3059\u308b\u3053\u3068\u3067\u3059\u3002\u5b9f\u969b\u306e\u30a4\u30fc\u30b5\u30cd\u30c3\u30c8\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306b\u304a\u3044\u3066\u3001\u7834\u640d\u3057\u305f\u30d5\u30ec\u30fc\u30e0\u306f\u3001\u901a\u5e38\u3001\u30b1\u30fc\u30d6\u30eb\u3001\u5149\u30d5\u30a1\u30a4\u30d0\u30ea\u30f3\u30af\u3001\u5149\u5b66\u30e2\u30b8\u30e5\u30fc\u30eb\u3001\u307e\u305f\u306f\u4fe1\u53f7\u54c1\u8cea\u306e\u554f\u984c\u306b\u3088\u3063\u3066\u5f15\u304d\u8d77\u3053\u3055\u308c\u3001\u4e0a\u4f4d\u5c64\u30d7\u30ed\u30c8\u30b3\u30eb\u306b\u3088\u308b\u3082\u306e\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30a8\u30f3\u30b8\u30cb\u30a2\u306f\u3001\u4e00\u822c\u7684\u306b\u5358\u7d14\u306a\u300c\u78ba\u8a8d\u30fb\u4ea4\u63db\u30fb\u6bd4\u8f03\u300d\u306e\u30ef\u30fc\u30af\u30d5\u30ed\u30fc\u306b\u5f93\u3044\u307e\u3059\uff1a\u30b1\u30fc\u30d6\u30eb\u307e\u305f\u306f\u5149\u30d5\u30a1\u30a4\u30d0\u7d4c\u8def\u3092\u70b9\u691c\u3057\u3001\u30b3\u30cd\u30af\u30bf\u3092\u6e05\u6383\u3057\u3001SFP\/QSFP\u5149\u5b66\u90e8\u54c1\u3092\u4ea4\u63db\u3057\u3001\u4e21\u7aef\u306e\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u30ab\u30a6\u30f3\u30bf\u3092\u6bd4\u8f03\u3057\u3001DOM\/DDM\u8a3a\u65ad\u5024\u3092\u78ba\u8a8d\u3057\u3066\u3001\u4e0d\u5b89\u5b9a\u306a\u30ea\u30f3\u30af\u3092\u7279\u5b9a\u3057\u307e\u3059\u3002.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1200\" height=\"675\" src=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/9dfdfe7a7a83414a93769dc2f15ac38f.jpg\" alt=\"How to Troubleshoot CRC\/FCS Errors in Real Networks\" class=\"wp-image-7273\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/9dfdfe7a7a83414a93769dc2f15ac38f.jpg 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/9dfdfe7a7a83414a93769dc2f15ac38f-300x169.jpg 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/9dfdfe7a7a83414a93769dc2f15ac38f-1024x576.jpg 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/9dfdfe7a7a83414a93769dc2f15ac38f-768x432.jpg 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/9dfdfe7a7a83414a93769dc2f15ac38f-18x10.jpg 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u6301\u7d9a\u7684\u306aCRC\uff0fFCS\u30a8\u30e9\u30fc\u306f\u3001\u7279\u306b10G\u300125G\u3001100G\u3001\u307e\u305f\u306f400G\u306e\u30a4\u30fc\u30b5\u30cd\u30c3\u30c8\u30fb\u30ea\u30f3\u30af\u3067\u306f\u7121\u8996\u3057\u3066\u306f\u3044\u3051\u307e\u305b\u3093\u3002\u30d3\u30c3\u30c8\u8aa4\u308a\u7387\uff08BER\uff09\u304c\u308f\u305a\u304b\u306b\u5897\u52a0\u3059\u308b\u3060\u3051\u3067\u3082\u3001\u30d1\u30b1\u30c3\u30c8\u640d\u5931\u3084\u518d\u9001\u4fe1\u3092\u5f15\u304d\u8d77\u3053\u3059\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >\u30b9\u30c6\u30c3\u30d71\uff1a\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u30ab\u30a6\u30f3\u30bf\u30fc\u306e\u78ba\u8a8d<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u30b9\u30a4\u30c3\u30c1\u3001\u30eb\u30fc\u30bf\u30fc\u3001\u307e\u305f\u306f\u30b5\u30fc\u30d0\u30fc\u4e0a\u306e\u30a4\u30fc\u30b5\u30cd\u30c3\u30c8\u30fb\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u7d71\u8a08\u3092\u78ba\u8a8d\u3059\u308b\u3053\u3068\u304b\u3089\u59cb\u3081\u307e\u3059\u3002.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u4e00\u822c\u7684\u306a\u30b3\u30de\u30f3\u30c9\uff1ashow interface<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u307e\u305f\u306fLinux\u3067\u306f\uff1aethtool -S eth0<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u6b21\u306e\u3088\u3046\u306a\u30ab\u30a6\u30f3\u30bf\u30fc\u3092\u78ba\u8a8d\u3057\u307e\u3059\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>\u30b1\u30fc\u30d6\u30eb\u304c\u63a5\u7d9a\u3055\u308c\u3066\u3044\u308b\u306b\u3082\u304b\u304b\u308f\u3089\u305a\u3001SFP\u30dd\u30fc\u30c8\u304c\u300c\u30c0\u30a6\u30f3\u300d\u3092\u8868\u793a\u3059\u308b\u306e\u306f\u306a\u305c\u3067\u3059\u304b\uff1f<\/p><\/li><li><p>FCS\u30a8\u30e9\u30fc<\/p><\/li><li><p>\u5165\u529b\u30a8\u30e9\u30fc<\/p><\/li><li><p>\u30a2\u30e9\u30a4\u30e1\u30f3\u30c8\u30a8\u30e9\u30fc<\/p><\/li><li><p>\u30d1\u30b1\u30c3\u30c8\u30c9\u30ed\u30c3\u30d7<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u4e00\u822c\u7684\u306a\u89e3\u91c8\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-table\">\n<table class=\"has-fixed-layout\">\n<colgroup><col style=\"width: 314px;\"\/><col style=\"min-width: 25px;\"\/><\/colgroup><tbody><tr><th colspan=\"1\" rowspan=\"1\" colwidth=\"314\"><p>\u30ab\u30a6\u30f3\u30bf\u30fc\u306e\u52d5\u4f5c<\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p>\u8003\u3048\u3089\u308c\u308b\u539f\u56e0<\/p><\/th><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"314\"><p>CRC\u304c\u3086\u3063\u304f\u308a\u3068\u5897\u52a0<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>\u5fae\u5c0f\u306a\u4fe1\u53f7\u554f\u984c<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"314\"><p>FCS\u304c\u6025\u6fc0\u306b\u5897\u52a0<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>\u7269\u7406\u5c64\u306e\u4e0d\u5b89\u5b9a\u6027<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"314\"><p>\u4e00\u65b9\u5074\u306e\u307f\u3067\u30a8\u30e9\u30fc\u767a\u751f<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>\u9001\u4fe1\uff0f\u53d7\u4fe1\uff08Tx\uff0fRx\uff09\u306e\u554f\u984c<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"314\"><p>\u4e21\u7aef\u3067\u30a8\u30e9\u30fc\u767a\u751f<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>\u30b1\u30fc\u30d6\u30eb\u307e\u305f\u306f\u5149\u30d5\u30a1\u30a4\u30d0\u30fc\u306e\u554f\u984c<\/p><\/td><\/tr><\/tbody>\n<\/table>\n<\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u30ab\u30a6\u30f3\u30bf\u30fc\u304c\u7d99\u7d9a\u7684\u306b\u5897\u52a0\u3057\u3066\u3044\u308b\u304b\u3069\u3046\u304b\u3092\u8ffd\u8de1\u3059\u308b\u3053\u3068\u306f\u3001\u65ad\u7d9a\u7684\u306a\u969c\u5bb3\u3092\u7279\u5b9a\u3059\u308b\u305f\u3081\u306b\u6975\u3081\u3066\u91cd\u8981\u3067\u3059\u3002.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >\u30b9\u30c6\u30c3\u30d72\uff1a\u30d1\u30c3\u30c1\u30b3\u30fc\u30c9\u306e\u4ea4\u63db<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u30d1\u30c3\u30c1\u30b3\u30fc\u30c9\u306f\u3001\u6700\u3082\u5bb9\u6613\u304b\u3064\u6700\u3082\u4e00\u822c\u7684\u306a\u969c\u5bb3\u30dd\u30a4\u30f3\u30c8\u306e1\u3064\u3067\u3059\u3002.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u9285\u7dda\u30ea\u30f3\u30af\u306e\u5834\u5408\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>RJ45\u30b1\u30fc\u30d6\u30eb\u3092\u4ea4\u63db\u3057\u307e\u3059\u3002<\/p><\/li><li><p>\u30b1\u30fc\u30d6\u30eb\u30ab\u30c6\u30b4\u30ea\u3092\u78ba\u8a8d\u3057\u307e\u3059\uff08<a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/ja\/knowledge-center\/cat5e-vs-cat6-vs-cat6a-for-copper-sfp\/\">Cat5e\/Cat6\/Cat6A<\/a>)<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u30d5\u30a1\u30a4\u30d0\u30fc\u30ea\u30f3\u30af\u306e\u5834\u5408\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>LC-LC\u30b8\u30e3\u30f3\u30d1\u30fc\u3092\u4ea4\u63db\u3057\u307e\u3059\u3002<\/p><\/li><li><p>MPO\u30b3\u30cd\u30af\u30bf\u3092\u691c\u67fb\u3057\u307e\u3059\u3002<\/p><\/li><li><p>\u5149\u30d5\u30a1\u30a4\u30d0\u30fc\u7aef\u9762\u3092\u9069\u5207\u306b\u6e05\u6383\u3057\u307e\u3059\u3002<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u3088\u304f\u898b\u3089\u308c\u308b\u5149\u30d5\u30a1\u30a4\u30d0\u30fc\u306e\u554f\u984c\u306b\u306f\u4ee5\u4e0b\u304c\u3042\u308a\u307e\u3059\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>\u30c0\u30b9\u30c8\u306b\u3088\u308b\u6c5a\u67d3<\/p><\/li><li><p>\u30d5\u30a1\u30a4\u30d0\u30fc\u306e\u66f2\u304c\u308a<\/p><\/li><li><p>\u30b3\u30cd\u30af\u30bf\u306e\u640d\u50b7<\/p><\/li><li><p>\u904e\u5927\u306a\u633f\u5165\u640d\u5931<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u591a\u304f\u306e\u5834\u5408\u3001\u4f4e\u54c1\u8cea\u307e\u305f\u306f\u640d\u50b7\u3057\u305f\u30d1\u30c3\u30c1\u30b3\u30fc\u30c9\u3092\u4ea4\u63db\u3059\u308b\u3053\u3068\u3067\u3001CRC\uff0fFCS\u30a8\u30e9\u30fc\u304c\u76f4\u3061\u306b\u89e3\u6d88\u3055\u308c\u307e\u3059\u3002.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >\u30b9\u30c6\u30c3\u30d73\uff1a\u5149\u30e2\u30b8\u30e5\u30fc\u30eb\u306e\u4ea4\u63db<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u30a8\u30e9\u30fc\u304c\u7d99\u7d9a\u3059\u308b\u5834\u5408\u3001\u5149\u30c8\u30e9\u30f3\u30b7\u30fc\u30d0\u30fc\u3092\u4ea4\u63db\u3057\u307e\u3059\u3002.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u5bfe\u8c61\u3068\u306a\u308b\u30c7\u30d0\u30a4\u30b9\u306b\u306f\u4ee5\u4e0b\u304c\u542b\u307e\u308c\u307e\u3059\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>SFP\u30e2\u30b8\u30e5\u30fc\u30eb\u3092\u4f7f\u7528\u3057\u3066\uff09\u306b\u63a5\u7d9a\u3057\u307e\u3059\u3002<\/p><\/li><li><p><a target=\"_self\" href=\"https:\/\/www.l-p.com\/products\/475586.htm\">SFP+\u5149\u5b66\u30e2\u30b8\u30e5\u30fc\u30eb<\/a><\/p><\/li><li><p>QSFP\uff0f<a target=\"_self\" href=\"https:\/\/www.l-p.com\/products\/482749.htm\">QSFP28\u30c8\u30e9\u30f3\u30b7\u30fc\u30d0\u30fc<\/a><\/p><\/li><li><p>DAC\uff0fAOC\u30b1\u30fc\u30d6\u30eb<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u6545\u969c\u4e2d\u306e\u5149\u5b66\u30e2\u30b8\u30e5\u30fc\u30eb\u306e\u5178\u578b\u7684\u306a\u75c7\u72b6\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-table\">\n<table class=\"has-fixed-layout\">\n<colgroup><col style=\"width: 306px;\"\/><col style=\"min-width: 25px;\"\/><\/colgroup><tbody><tr><th colspan=\"1\" rowspan=\"1\" colwidth=\"306\"><p>\u75c7\u72b6<\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p>\u8003\u3048\u3089\u308c\u308b\u539f\u56e0<\/p><\/th><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"306\"><p>\u65ad\u7d9a\u7684\u306a CRC \u30a8\u30e9\u30fc<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>\u30ec\u30fc\u30b6\u30fc\u306e\u4e0d\u5b89\u5b9a\u5316<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"306\"><p>\u30ea\u30f3\u30af\u30d5\u30e9\u30f3\u30d4\u30f3\u30b0<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>\u5149\u5b66\u30e2\u30b8\u30e5\u30fc\u30eb\u306e\u904e\u71b1<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"306\"><p>\u30d1\u30b1\u30c3\u30c8\u7834\u640d<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>DSP\u306e\u4e0d\u5b89\u5b9a\u5316<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"306\"><p>\u9ad8\u3044BER<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>\u30c8\u30e9\u30f3\u30b7\u30fc\u30d0\u30fc\u306e\u7d4c\u5e74\u52a3\u5316<\/p><\/td><\/tr><\/tbody>\n<\/table>\n<\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u5358\u7d14\u306a\u5149\u5b66\u30e2\u30b8\u30e5\u30fc\u30eb\u306e\u4ea4\u63db\u306f\u3001\u30c8\u30e9\u30f3\u30b7\u30fc\u30d0\u30fc\u304c\u4e0d\u826f\u3067\u3042\u308b\u304b\u3069\u3046\u304b\u3092\u78ba\u8a8d\u3059\u308b\u6700\u3082\u8fc5\u901f\u306a\u65b9\u6cd5\u3067\u3042\u308b\u3053\u3068\u304c\u591a\u3044\u3067\u3059\u3002.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >\u30b9\u30c6\u30c3\u30d74\uff1a\u30ea\u30f3\u30af\u4e21\u7aef\u306e\u6bd4\u8f03<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u30a4\u30fc\u30b5\u30cd\u30c3\u30c8\u63a5\u7d9a\u306e\u4e21\u7aef\u306b\u304a\u3051\u308b\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u7d71\u8a08\u3092\u5e38\u306b\u6bd4\u8f03\u3057\u3066\u304f\u3060\u3055\u3044\u3002.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u4f8b\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\">\n<code>\u30b9\u30a4\u30c3\u30c1A \u2194 \u5149\u30d5\u30a1\u30a4\u30d0\u30fc\u30ea\u30f3\u30af \u2194 \u30b9\u30a4\u30c3\u30c1B<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u78ba\u8a8d\u3059\u3079\u304d\u8cea\u554f\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>\u4e21\u7aef\u3067\u30a8\u30e9\u30fc\u304c\u5897\u52a0\u3057\u3066\u3044\u307e\u3059\u304b\uff1f<\/p><\/li><li><p>CRC\uff0fFCS\u30a8\u30e9\u30fc\u3092\u5831\u544a\u3059\u308b\u306e\u306f\u7247\u65b9\u306e\u307f\u3067\u3059\u304b\uff1f<\/p><\/li><li><p>\u9001\u4fe1\u5074\u306f\u5b89\u5b9a\u3057\u3066\u3044\u307e\u3059\u304b\uff1f<\/p><\/li><li><p>\u30d1\u30b1\u30c3\u30c8\u30c9\u30ed\u30c3\u30d7\u306f\u5bfe\u79f0\u7684\u3067\u3059\u304b\uff1f<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u4e00\u822c\u5247\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-table\">\n<table class=\"has-fixed-layout\">\n<colgroup><col style=\"min-width: 25px;\"\/><col style=\"min-width: 25px;\"\/><\/colgroup><tbody><tr><th colspan=\"1\" rowspan=\"1\"><p>\u89b3\u5bdf\u4e8b\u9805<\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p>\u8003\u3048\u3089\u308c\u308b\u539f\u56e0<\/p><\/th><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p>\u4e21\u7aef\u3067\u30a8\u30e9\u30fc\u304c\u767a\u751f<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>\u5149\u30d5\u30a1\u30a4\u30d0\u30fc\u307e\u305f\u306f\u30b1\u30fc\u30d6\u30eb\u306e\u554f\u984c<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p>\u7247\u65b9\u306e\u307f\u3067\u30a8\u30e9\u30fc\u767a\u751f<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>\u9001\u4fe1\uff0f\u53d7\u4fe1\uff08Tx\uff0fRx\uff09\u30cf\u30fc\u30c9\u30a6\u30a7\u30a2\u306e\u554f\u984c<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p>\u9ad8\u8ca0\u8377\u6642\u306e\u307f\u767a\u751f<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>\u4fe1\u53f7\u6574\u5408\u6027\u306e\u554f\u984c<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p>\u5149\u5b66\u30e2\u30b8\u30e5\u30fc\u30eb\u4ea4\u63db\u5f8c\u306e\u30a8\u30e9\u30fc<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>\u30b9\u30a4\u30c3\u30c1\uff0fNIC\u306e\u554f\u984c<\/p><\/td><\/tr><\/tbody>\n<\/table>\n<\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u3053\u306e\u6bd4\u8f03\u306b\u3088\u308a\u3001\u554f\u984c\u304c\u30ea\u30f3\u30af\u3001\u5149\u5b66\u30e2\u30b8\u30e5\u30fc\u30eb\u3001\u307e\u305f\u306f\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u30cf\u30fc\u30c9\u30a6\u30a7\u30a2\u81ea\u4f53\u306e\u3044\u305a\u308c\u304b\u3089\u767a\u751f\u3057\u3066\u3044\u308b\u304b\u3092\u7279\u5b9a\u3067\u304d\u307e\u3059\u3002.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >\u624b\u98065\uff1aDDM\uff0fDOM\u8a3a\u65ad\u306e\u78ba\u8a8d<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u6700\u65b0\u306e\u5149\u5b66\u30e2\u30b8\u30e5\u30fc\u30eb\u306f <a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/ja\/glossary\/ddm-dom-in-optical-transceivers\/\">\u30d1\u30b9\u306e\u5065\u5eb7\u72b6\u614b\u3092\u76e3\u8996\u3059\u308b\u305f\u3081\u306e\u30e2\u30cb\u30bf\u30ea\u30f3\u30b0\u6a5f\u80fd\u3092\u5099\u3048\u3066\u3044\u307e\u3059\u3002<\/a> \u30e2\u30cb\u30bf\u30ea\u30f3\u30b0\u3092\u30b5\u30dd\u30fc\u30c8\u3057\u3066\u304a\u308a\u3001\u30ea\u30a2\u30eb\u30bf\u30a4\u30e0\u306e\u5149\u5b66\u8a3a\u65ad\u60c5\u5831\u3092\u63d0\u4f9b\u3057\u307e\u3059\u3002.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u4e00\u822c\u7684\u306a\u8b66\u544a\u30b5\u30a4\u30f3\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-table\">\n<table class=\"has-fixed-layout\">\n<colgroup><col style=\"min-width: 25px;\"\/><col style=\"min-width: 25px;\"\/><\/colgroup><tbody><tr><th colspan=\"1\" rowspan=\"1\"><p>DOM\uff0fDDM\u8aad\u307f\u53d6\u308a\u5024<\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p>\u8003\u3048\u3089\u308c\u308b\u554f\u984c<\/p><\/th><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p>\u53d7\u4fe1\uff08Rx\uff09\u5149\u51fa\u529b\u304c\u4f4e\u3044<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>\u5149\u30d5\u30a1\u30a4\u30d0\u30fc\u306e\u6c5a\u308c\u307e\u305f\u306f\u6e1b\u8870<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p>\u6e29\u5ea6\u304c\u9ad8\u3044<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>\u51b7\u5374\u4e0d\u826f<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p>\u30d0\u30a4\u30a2\u30b9\u96fb\u6d41\u304c\u9ad8\u3044<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>\u30ec\u30fc\u30b6\u30fc\u306e\u52a3\u5316<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p>\u5149\u51fa\u529b\u304c\u5909\u52d5\u3059\u308b<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>\u4e0d\u5b89\u5b9a\u306a\u5149\u5b66\u30e2\u30b8\u30e5\u30fc\u30eb<\/p><\/td><\/tr><\/tbody>\n<\/table>\n<\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u305f\u3068\u3048\u3070\u3001 <a target=\"_self\" href=\"https:\/\/www.l-p.com\/products\/482487.htm\">QSFP28\u30e2\u30b8\u30e5\u30fc\u30eb<\/a> \u306e\u53d7\u4fe1\uff08Rx\uff09\u5149\u51fa\u529b\u304c\u4e0d\u5b89\u5b9a\u306a\u5834\u5408\u3001\u30ea\u30f3\u30af\u304c\u6b63\u5e38\u306b\u52d5\u4f5c\u3057\u3066\u3044\u308b\u3088\u3046\u306b\u898b\u3048\u3066\u3082\u3001\u4e00\u6642\u7684\u306aCRC\uff0fFCS\u30a8\u30e9\u30fc\u3092\u5f15\u304d\u8d77\u3053\u3059\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">100G\u304a\u3088\u3073400G\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306a\u3069\u306e\u9ad8\u901f\u30a4\u30fc\u30b5\u30cd\u30c3\u30c8\u74b0\u5883\u3067\u306f\u3001\u5b8c\u5168\u306a\u30ea\u30f3\u30af\u969c\u5bb3\u304c\u767a\u751f\u3059\u308b\u524d\u306b\u3001\u96a0\u308c\u305f\u5149\u5c64\u306e\u554f\u984c\u3092\u7279\u5b9a\u3059\u308b\u305f\u3081\u306b\u3001DOM\uff0fDDM\u30e2\u30cb\u30bf\u30ea\u30f3\u30b0\u304c\u3057\u3070\u3057\u3070\u4e0d\u53ef\u6b20\u3067\u3059\u3002.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" >\u2705 Wireshark\u304cFCS\u3092\u8868\u793a\u3057\u306a\u3044\u7406\u7531\u306f\uff1f<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u591a\u304f\u306e\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30a8\u30f3\u30b8\u30cb\u30a2\u306f\u3001\u30d1\u30b1\u30c3\u30c8\u30ad\u30e3\u30d7\u30c1\u30e3\u5185\u306b4\u30d0\u30a4\u30c8\u306e\u30d5\u30ec\u30fc\u30e0\u30c1\u30a7\u30c3\u30af\u30b7\u30fc\u30b1\u30f3\u30b9\uff08FCS\uff09\u304c\u8868\u793a\u3055\u308c\u308b\u3068\u671f\u5f85\u3057\u307e\u3059\u304c\u3001\u307b\u3068\u3093\u3069\u306e\u5834\u5408\u3001Wireshark\u306f\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u30ab\u30fc\u30c9\uff08NIC\uff09\u304b\u3089FCS\u30d5\u30a3\u30fc\u30eb\u30c9\u3092\u53d7\u4fe1\u3057\u307e\u305b\u3093\u3002\u6700\u65b0\u306eNIC\u304a\u3088\u3073\u30aa\u30da\u30ec\u30fc\u30c6\u30a3\u30f3\u30b0\u30b7\u30b9\u30c6\u30e0\u3067\u306f\u3001\u901a\u5e38\u3001\u30d1\u30b1\u30c3\u30c8\u3092\u30ad\u30e3\u30d7\u30c1\u30e3\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2\u306b\u6e21\u3059\u524d\u306bFCS\u304c\u9664\u53bb\u3055\u308c\u307e\u3059\u3002\u305d\u306e\u7d50\u679c\u3001\u30b9\u30a4\u30c3\u30c1\u3001\u30eb\u30fc\u30bf\u30fc\u3001\u307e\u305f\u306fNIC\u304c\u7269\u7406\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u4e0a\u3067CRC\uff0fFCS\u30a8\u30e9\u30fc\u3092\u5831\u544a\u3057\u3066\u3044\u308b\u306b\u3082\u304b\u304b\u308f\u3089\u305a\u3001Wireshark\u4e0a\u3067\u306f\u30d1\u30b1\u30c3\u30c8\u304c\u6b63\u5e38\u306b\u8868\u793a\u3055\u308c\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1200\" height=\"675\" src=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/f1916b7d68e340fabd50746e1a0bcd16.jpg\" alt=\"Why Does Wireshark Often Not Show FCS?\" class=\"wp-image-7274\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/f1916b7d68e340fabd50746e1a0bcd16.jpg 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/f1916b7d68e340fabd50746e1a0bcd16-300x169.jpg 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/f1916b7d68e340fabd50746e1a0bcd16-1024x576.jpg 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/f1916b7d68e340fabd50746e1a0bcd16-768x432.jpg 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/f1916b7d68e340fabd50746e1a0bcd16-18x10.jpg 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u3053\u306e\u52d5\u4f5c\u306f\u3001\u30a4\u30fc\u30b5\u30cd\u30c3\u30c8\u306e\u7834\u640d\u554f\u984c\u3092\u30c8\u30e9\u30d6\u30eb\u30b7\u30e5\u30fc\u30c6\u30a3\u30f3\u30b0\u3059\u308b\u969b\u306b\u6700\u3082\u3088\u304f\u898b\u3089\u308c\u308b\u6df7\u4e71\u306e\u539f\u56e0\u306e\u4e00\u3064\u3067\u3059\u3002.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >\u30ad\u30e3\u30d7\u30c1\u30e3\u3068\u30ef\u30a4\u30e4\u4e0a\u3067\u306e\u30d5\u30ec\u30fc\u30e0\u306e\u9055\u3044<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Wireshark\u3067\u8868\u793a\u3055\u308c\u308b\u30d1\u30b1\u30c3\u30c8\u306f\u3001\u30ef\u30a4\u30e4\u4e0a\u3067\u5b9f\u969b\u306b\u9001\u4fe1\u3055\u308c\u305f\u30aa\u30ea\u30b8\u30ca\u30eb\u306e\u30a4\u30fc\u30b5\u30cd\u30c3\u30c8\u30d5\u30ec\u30fc\u30e0\u3068\u5e38\u306b\u4e00\u81f4\u3059\u308b\u308f\u3051\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u5b9f\u969b\u306e\u30a4\u30fc\u30b5\u30cd\u30c3\u30c8\u4f1d\u9001\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\">\n<code>| \u30a4\u30fc\u30b5\u30cd\u30c3\u30c8\u30d8\u30c3\u30c0\u30fc | \u30da\u30a4\u30ed\u30fc\u30c9 | FCS |<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">Wireshark\u304c\u901a\u5e38\u53d7\u4fe1\u3059\u308b\u3082\u306e\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\">\n<code>| \u30a4\u30fc\u30b5\u30cd\u30c3\u30c8\u30d8\u30c3\u30c0\u30fc | \u30da\u30a4\u30ed\u30fc\u30c9 |<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">NIC\u304cFCS\u3092OS\u306b\u30d1\u30b1\u30c3\u30c8\u3092\u8ee2\u9001\u3059\u308b\u524d\u306b\u9664\u53bb\u3059\u308b\u305f\u3081\u3001\u30ad\u30e3\u30d7\u30c1\u30e3\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2\u306f\u30aa\u30ea\u30b8\u30ca\u30eb\u306e4\u30d0\u30a4\u30c8FCS\u30d5\u30a3\u30fc\u30eb\u30c9\u3092\u4e00\u5ea6\u3082\u898b\u306a\u3044\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u305d\u306e\u305f\u3081\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u73fe\u8c61\u304c\u767a\u751f\u3057\u307e\u3059\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Wireshark\u306b\u306fFCS\u30d5\u30a3\u30fc\u30eb\u30c9\u304c\u8868\u793a\u3055\u308c\u306a\u3044<\/p><\/li><li><p>\u30d1\u30b1\u30c3\u30c8\u9577\u304c\u77ed\u304f\u8868\u793a\u3055\u308c\u308b<\/p><\/li><li><p>\u30b9\u30a4\u30c3\u30c1\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u4e0a\u3067\u4f9d\u7136\u3068\u3057\u3066CRC\u30a8\u30e9\u30fc\u304c\u5b58\u5728\u3059\u308b<\/p><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" >NIC\u306e\u30aa\u30d5\u30ed\u30fc\u30c9\u52d5\u4f5c<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u6700\u65b0\u306eNIC\u306f\u3001\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u5411\u4e0a\u306e\u305f\u3081\u3001\u591a\u304f\u306e\u30a4\u30fc\u30b5\u30cd\u30c3\u30c8\u64cd\u4f5c\u3092\u30cf\u30fc\u30c9\u30a6\u30a7\u30a2\u4e0a\u3067\u76f4\u63a5\u5b9f\u884c\u3057\u307e\u3059\u3002.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u4e00\u822c\u7684\u306a\u30cf\u30fc\u30c9\u30a6\u30a7\u30a2\u30aa\u30d5\u30ed\u30fc\u30c9\u6a5f\u80fd\u306b\u306f\u4ee5\u4e0b\u304c\u542b\u307e\u308c\u307e\u3059\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>FCS\u751f\u6210<\/p><\/li><li><p>CRC\u691c\u8a3c<\/p><\/li><li><p>TCP\u30c1\u30a7\u30c3\u30af\u30b5\u30e0\u30aa\u30d5\u30ed\u30fc\u30c9<\/p><\/li><li><p>\u30bb\u30b0\u30e1\u30f3\u30c6\u30fc\u30b7\u30e7\u30f3\u30aa\u30d5\u30ed\u30fc\u30c9<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u307b\u3068\u3093\u3069\u306e\u30b7\u30b9\u30c6\u30e0\u3067\u306f\u3001\u30d1\u30b1\u30c3\u30c8\u304cWireshark\u306b\u5230\u9054\u3059\u308b\u524d\u306bNIC\u304cCRC\/FCS\u3092\u691c\u8a3c\u3057\u307e\u3059\u3002.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u51e6\u7406\u30d5\u30ed\u30fc\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\">\n<code>\u30a4\u30fc\u30b5\u30cd\u30c3\u30c8\u30d5\u30ec\u30fc\u30e0\u5230\u7740<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u30d5\u30ec\u30fc\u30e0\u304cCRC\u691c\u8a3c\u306b\u5931\u6557\u3057\u305f\u5834\u5408\u3001NIC\u306f\u305d\u306e\u30d5\u30ec\u30fc\u30e0\u3092\u5373\u5ea7\u306b\u7834\u68c4\u3057\u3001OS\u3078\u6e21\u3055\u306a\u3044\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u305d\u306e\u7d50\u679c\u3001\u30d1\u30b1\u30c3\u30c8\u30ad\u30e3\u30d7\u30c1\u30e3\u3067\u306f\u640d\u50b7\u3057\u305f\u30d1\u30b1\u30c3\u30c8\u304c\u898b\u3048\u306a\u304f\u306a\u308b\u3053\u3068\u304c\u591a\u304f\u3001\u4e00\u65b9\u3067\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u30ab\u30a6\u30f3\u30bf\u306f\u5f15\u304d\u7d9a\u304d\u5897\u52a0\u3057\u7d9a\u3051\u307e\u3059\u3002.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >\u306a\u305c\u30d1\u30b1\u30c3\u30c8\u9577\u304c\u4e88\u60f3\u3088\u308a\u77ed\u304f\u8868\u793a\u3055\u308c\u308b\u306e\u304b<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u30a4\u30fc\u30b5\u30cd\u30c3\u30c8FCS\u306f\u30d5\u30ec\u30fc\u30e0\u672b\u5c3e\u306b4\u30d0\u30a4\u30c8\u8ffd\u52a0\u3055\u308c\u307e\u3059\u3002.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u7406\u8ad6\u4e0a\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\">\n<code>\u30a4\u30fc\u30b5\u30cd\u30c3\u30c8\u30d5\u30ec\u30fc\u30e0\u9577<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u3057\u304b\u3057\u3001FCS\u306fNIC\u306b\u3088\u3063\u3066\u983b\u7e41\u306b\u9664\u53bb\u3055\u308c\u308b\u305f\u3081\u3001Wireshark\u304c\u8868\u793a\u3059\u308b\u30d5\u30ec\u30fc\u30e0\u9577\u306f\u3001\u5b9f\u969b\u306e\u30ef\u30a4\u30e4\u4e0a\u3067\u306e\u4f1d\u9001\u9577\u3088\u308a4\u30d0\u30a4\u30c8\u77ed\u304f\u306a\u308b\u3053\u3068\u304c\u3088\u304f\u3042\u308a\u307e\u3059\u3002.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u4f8b\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-table\">\n<table class=\"has-fixed-layout\">\n<colgroup><col style=\"min-width: 25px;\"\/><col style=\"min-width: 25px;\"\/><\/colgroup><tbody><tr><th colspan=\"1\" rowspan=\"1\"><p>\u30d5\u30ec\u30fc\u30e0\u30bf\u30a4\u30d7<\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p>\u8868\u793a\u3055\u308c\u308b\u9577\u3055<\/p><\/th><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p>\u5b9f\u969b\u306e\u30a4\u30fc\u30b5\u30cd\u30c3\u30c8\u30d5\u30ec\u30fc\u30e0<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>1518 \u30d0\u30a4\u30c8<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p>FCS\u306a\u3057\u3067\u30ad\u30e3\u30d7\u30c1\u30e3\u3055\u308c\u305f\u30d5\u30ec\u30fc\u30e0<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>1514 \u30d0\u30a4\u30c8<\/p><\/td><\/tr><\/tbody>\n<\/table>\n<\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u3053\u306e\u5dee\u7570\u306f\u3001\u307b\u3068\u3093\u3069\u306e\u30d1\u30b1\u30c3\u30c8\u30ad\u30e3\u30d7\u30c1\u30e3\u74b0\u5883\u306b\u304a\u3044\u3066\u5b8c\u5168\u306b\u6b63\u5e38\u3067\u3059\u3002.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u4e00\u90e8\u306e\u7279\u6b8a\u306a\u30ad\u30e3\u30d7\u30c1\u30e3\u30a2\u30c0\u30d7\u30bf\u304a\u3088\u3073\u76e3\u8996\u30b7\u30b9\u30c6\u30e0\u3067\u306fFCS\u30d5\u30a3\u30fc\u30eb\u30c9\u3092\u4fdd\u6301\u3067\u304d\u307e\u3059\u304c\u3001\u6a19\u6e96\u7684\u306a\u30c7\u30b9\u30af\u30c8\u30c3\u30d7NIC\u306f\u901a\u5e38\u3001\u30c7\u30d5\u30a9\u30eb\u30c8\u3067Wireshark\u306bFCS\u3092\u516c\u958b\u3057\u307e\u305b\u3093\u3002.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">CRC\uff0fFCS\u95a2\u9023\u306e\u30c8\u30e9\u30d6\u30eb\u30b7\u30e5\u30fc\u30c6\u30a3\u30f3\u30b0\u3092\u884c\u3046\u969b\u3001\u30a8\u30f3\u30b8\u30cb\u30a2\u306f\u4ee5\u4e0b\u306e\u60c5\u5831\u306b\u7279\u306b\u4f9d\u5b58\u3057\u307e\u3059\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>\u30b9\u30a4\u30c3\u30c1\u306e\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u30ab\u30a6\u30f3\u30bf<\/p><\/li><li><p>NIC\u306e\u7d71\u8a08\u60c5\u5831<\/p><\/li><li><p>\u5149\u30e2\u30b8\u30e5\u30fc\u30eb\u8a3a\u65ad<\/p><\/li><li><p>DOM\uff0fDDM\u76e3\u8996<\/p><\/li><li><p>\u7269\u7406\u5c64\u30c6\u30b9\u30c8<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u30d1\u30b1\u30c3\u30c8\u30ad\u30e3\u30d7\u30c1\u30e3\u306e\u307f\u306b\u983c\u308b\u306e\u3067\u306f\u306a\u304f\u3002.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" >\u2705 \u5c11\u6570\u306eCRC\uff0fFCS\u30a8\u30e9\u30fc\u306f\u8a31\u5bb9\u53ef\u80fd\u3067\u3059\u304b\uff1f<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u672c\u756a\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u3067\u306f\u3001\u9ad8\u901f\u30ea\u30f3\u30af\u306b\u304a\u3044\u3066\u306f\u3001\u308f\u305a\u304b\u3067\u3082\u7d99\u7d9a\u7684\u306b\u767a\u751f\u3059\u308bCRC\uff0fFCS\u30a8\u30e9\u30fc\u306f\u3001\u901a\u5e38\u3001\u4f55\u3089\u304b\u306e\u7570\u5e38\u3092\u793a\u3059\u30b5\u30a4\u30f3\u3067\u3059\u3002\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30a8\u30f3\u30b8\u30cb\u30a2\u306b\u3088\u308bReddit\u4e0a\u306e\u8b70\u8ad6\u3067\u306f\u3001\u5b89\u5b9a\u3057\u305f\u74b0\u5883\u306b\u304a\u3051\u308b\u300c\u8a31\u5bb9\u53ef\u80fd\u306a\u300d\u30a8\u30e9\u30fc\u7387\u306f\u4e8b\u5b9f\u4e0a\u30bc\u30ed\u3067\u3042\u308b\u3068\u7e70\u308a\u8fd4\u3057\u8ff0\u3079\u3089\u308c\u3066\u304a\u308a\u3001\u3053\u308c\u306f\u3001\u4f4e\u30ec\u30d9\u30eb\u306e\u30a8\u30e9\u30fc\u3067\u3042\u3063\u3066\u3082\u518d\u9001\u4fe1\u3084\u9045\u5ef6\u3001\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u3078\u306e\u5f71\u97ff\u3092\u5f15\u304d\u8d77\u3053\u3059\u53ef\u80fd\u6027\u304c\u3042\u308b\u305f\u3081\u3067\u3059\u3002.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1200\" height=\"675\" src=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/0f53c3e969c04e8c9fa33cf0cb8b5fdc.jpg\" alt=\"Is a Small Number of CRC\/FCS Errors Acceptable?\" class=\"wp-image-7275\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/0f53c3e969c04e8c9fa33cf0cb8b5fdc.jpg 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/0f53c3e969c04e8c9fa33cf0cb8b5fdc-300x169.jpg 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/0f53c3e969c04e8c9fa33cf0cb8b5fdc-1024x576.jpg 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/0f53c3e969c04e8c9fa33cf0cb8b5fdc-768x432.jpg 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/0f53c3e969c04e8c9fa33cf0cb8b5fdc-18x10.jpg 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Ethernet\u306f\u7834\u640d\u3057\u305f\u30d5\u30ec\u30fc\u30e0\u3092\u81ea\u52d5\u7684\u306b\u7834\u68c4\u3059\u308b\u305f\u3081\u3001\u518d\u767a\u3059\u308bFCS\u30a8\u30e9\u30fc\u306f\u7121\u8996\u3059\u308b\u306e\u3067\u306f\u306a\u304f\u3001\u5e38\u306b\u8abf\u67fb\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >\u300c\u30bc\u30ed\u300d\u304c\u76ee\u6a19\u3068\u306a\u308b\u3068\u304d<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u4f01\u696d\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u304a\u3088\u3073\u30c7\u30fc\u30bf\u30bb\u30f3\u30bf\u30fc\u3067\u306f\u3001\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30a8\u30f3\u30b8\u30cb\u30a2\u306f\u901a\u5e38\u6b21\u3092\u671f\u5f85\u3057\u307e\u3059\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\">\n<code>CRC\u30a8\u30e9\u30fc = 0<br>FCS\u30a8\u30e9\u30fc = 0<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u7279\u306b\u4ee5\u4e0b\u306b\u304a\u3044\u3066\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>\u30b3\u30a2\u30b9\u30a4\u30c3\u30c1<\/p><\/li><li><p>\u30b9\u30c8\u30ec\u30fc\u30b8\u30cd\u30c3\u30c8\u30ef\u30fc\u30af<\/p><\/li><li><p>\u30b9\u30d1\u30a4\u30f3\u30fb\u30ea\u30fc\u30d5\u30d5\u30a1\u30d6\u30ea\u30c3\u30af<\/p><\/li><li><p>AI\u30af\u30e9\u30b9\u30bf\u30a4\u30f3\u30bf\u30fc\u30b3\u30cd\u30af\u30c8<\/p><\/li><li><p>\u9ad8\u983b\u5ea6\u53d6\u5f15\u30cd\u30c3\u30c8\u30ef\u30fc\u30af<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u5b89\u5b9a\u3057\u305fEthernet\u30ea\u30f3\u30af\u306f\u3001\u7d99\u7d9a\u7684\u306a\u30d5\u30ec\u30fc\u30e0\u7834\u640d\u306a\u3057\u3067\u52d5\u4f5c\u3059\u3079\u304d\u3067\u3059\u3002.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u901a\u5e38\u306e\u5065\u5168\u306a\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u52d5\u4f5c\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-table\">\n<table class=\"has-fixed-layout\">\n<colgroup><col style=\"min-width: 25px;\"\/><col style=\"min-width: 25px;\"\/><\/colgroup><tbody><tr><th colspan=\"1\" rowspan=\"1\"><p>\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u30b9\u30c6\u30fc\u30bf\u30b9<\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p>CRC\/FCS\u30a8\u30e9\u30fc<\/p><\/th><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p>\u6b63\u5e38\u306a\u5b89\u5b9a\u30ea\u30f3\u30af<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>0<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p>\u5076\u767a\u7684\u306a\u4e00\u6642\u7684\u30a4\u30d9\u30f3\u30c8<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>\u975e\u5e38\u306b\u4f4e\u3044<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p>\u7d99\u7d9a\u7684\u306b\u5897\u52a0\u3059\u308b\u30ab\u30a6\u30f3\u30bf\u30fc<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>\u554f\u984c\u304c\u5b58\u5728\u3059\u308b<\/p><\/td><\/tr><\/tbody>\n<\/table>\n<\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u30ab\u30a6\u30f3\u30bf\u30fc\u304c\u6642\u9593\u3068\u3068\u3082\u306b\u7d99\u7d9a\u7684\u306b\u5897\u52a0\u3057\u3066\u3044\u308b\u5834\u5408\u3001\u305d\u306e\u554f\u984c\u306f\u901a\u5e38\u300c\u6b63\u5e38\u300d\u3068\u898b\u306a\u3055\u308c\u307e\u305b\u3093\u3002.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >\u65ad\u7d9a\u7684\u306a\u30a8\u30e9\u30fc\u304c\u554f\u984c\u3068\u306a\u308b\u3068\u304d<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u4e00\u90e8\u306e\u74b0\u5883\u3067\u306f\u3001\u4ee5\u4e0b\u306e\u539f\u56e0\u306b\u3088\u308a\u5076\u767a\u7684\u306aCRC\/FCS\u306e\u30d4\u30fc\u30af\u304c\u767a\u751f\u3059\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>EMI\u5e72\u6e09<\/p><\/li><li><p>\u7f36\u306e\u7de9\u307f<\/p><\/li><li><p>\u8001\u673d\u5316\u3057\u305f\u5149\u30c7\u30d0\u30a4\u30b9<\/p><\/li><li><p>\u6e29\u5ea6\u5909\u52d5<\/p><\/li><li><p>\u4f4e\u54c1\u8cea\u306e\u30b1\u30fc\u30d6\u30eb<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u30a8\u30e9\u30fc\u7387\u304c\u4f4e\u304f\u898b\u3048\u3066\u3082\u3001\u65ad\u7d9a\u7684\u306a\u7834\u640d\u306f\u4f9d\u7136\u3068\u3057\u3066\u4ee5\u4e0b\u306e\u9805\u76ee\u306b\u5f71\u97ff\u3092\u4e0e\u3048\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>TCP\u518d\u9001\u4fe1<\/p><\/li><li><p>\u30b9\u30c8\u30ec\u30fc\u30b8\u30c8\u30e9\u30d5\u30a3\u30c3\u30af<\/p><\/li><li><p>\u97f3\u58f0\uff0f\u6620\u50cf\u54c1\u8cea<\/p><\/li><li><p>\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u540c\u671f<\/p><\/li><li><p>\u30ea\u30a2\u30eb\u30bf\u30a4\u30e0AI\u30ef\u30fc\u30af\u30ed\u30fc\u30c9<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u4f8b\uff1a\u52d5\u4f5c\u4f8b<\/p>\n\n\n\n<pre class=\"wp-block-code\">\n<code>\u4f4e\u3044BER<br>\u2192 \u5076\u767a\u7684\u306a\u30d5\u30ec\u30fc\u30e0\u7834\u640d<br>\u2192 \u518d\u9001\u4fe1<br>\u2192 \u30ec\u30a4\u30c6\u30f3\u30b7\u306e\u5897\u52a0<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u591a\u304f\u306e\u672c\u756a\u74b0\u5883\u3067\u306f\u3001\u65ad\u7d9a\u7684\u306a\u30a8\u30e9\u30fc\u306f\u4ee5\u4e0b\u306e\u6642\u671f\u306b\u7279\u306b\u9855\u8457\u306b\u306a\u308a\u307e\u3059\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>\u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u30d4\u30fc\u30af\u6642<\/p><\/li><li><p>\u9ad8\u6e29\u6642<\/p><\/li><li><p>\u5927\u898f\u6a21\u30d5\u30a1\u30a4\u30eb\u8ee2\u9001\u6642<\/p><\/li><li><p>\u30d0\u30fc\u30b9\u30c8\u6027\u306e\u30a4\u30fc\u30b9\u30c8\u30fb\u30a6\u30a7\u30b9\u30c8\u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u6642<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u3053\u306e\u305f\u3081\u3001\u518d\u767a\u3059\u308bCRC\/FCS\u30a8\u30e9\u30fc\u306f\u3001\u3088\u308a\u5927\u304d\u306a\u30ea\u30f3\u30af\u969c\u5bb3\u304c\u767a\u751f\u3059\u308b\u524d\u306e\u521d\u671f\u6bb5\u968e\u306e\u8b66\u544a\u30b5\u30a4\u30f3\u3068\u3057\u3066\u6271\u308f\u308c\u308b\u3053\u3068\u304c\u591a\u3044\u306e\u3067\u3059\u3002.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >\u9ad8\u901f\u30ea\u30f3\u30af\u304c\u3088\u308a\u8a31\u5bb9\u7bc4\u56f2\u304c\u72ed\u304f\u306a\u308b\u7406\u7531<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Ethernet\u306e\u901f\u5ea6\u304c\u5411\u4e0a\u3059\u308b\u306b\u3064\u308c\u3001\u4fe1\u53f7\u5b8c\u5168\u6027\u306f\u306f\u308b\u304b\u306b\u654f\u611f\u306b\u306a\u308a\u307e\u3059\u3002.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u6b21\u306e\u3088\u3046\u306a\u9ad8\u901f\u30ea\u30f3\u30af\u3067\u306f\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>25G\u30a4\u30fc\u30b5\u30cd\u30c3\u30c8<\/p><\/li><li><p>100G\u30a4\u30fc\u30b5\u30cd\u30c3\u30c8<\/p><\/li><li><p>400G\u30a4\u30fc\u30b5\u30cd\u30c3\u30c8<\/p><\/li><li><p>800G\u30a4\u30fc\u30b5\u30cd\u30c3\u30c8<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u4ee5\u4e0b\u304c\u9069\u7528\u3055\u308c\u307e\u3059\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>\u9ad8\u3044\u4fe1\u53f7\u4f1d\u9001\u30ec\u30fc\u30c8<\/p><\/li><li><p>\u3088\u308a\u53b3\u3057\u3044\u30bf\u30a4\u30df\u30f3\u30b0\u30de\u30fc\u30b8\u30f3<\/p><\/li><li><p>\u30ce\u30a4\u30ba\u304a\u3088\u3073\u30b8\u30c3\u30bf\u3078\u306e\u611f\u53d7\u6027\u306e\u5897\u5927<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u4e00\u822c\u7684\u306a\u50be\u5411\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-table\">\n<table class=\"has-fixed-layout\">\n<colgroup><col style=\"width: 282px;\"\/><col style=\"min-width: 25px;\"\/><\/colgroup><tbody><tr><th colspan=\"1\" rowspan=\"1\" colwidth=\"282\"><p>\u30a4\u30fc\u30b5\u30cd\u30c3\u30c8\u901f\u5ea6<\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p>\u30a8\u30e9\u30fc\u611f\u53d7\u6027<\/p><\/th><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"282\"><p>1G<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>\u4f4e\u3044<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"282\"><p>10G<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>\u4e2d\u7a0b\u5ea6<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"282\"><p>25G<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>\u9ad8\u3044<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"282\"><p>100G<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>\u975e\u5e38\u306b\u9ad8\u3044<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"282\"><p>400G+<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>\u6975\u3081\u3066\u654f\u611f<\/p><\/td><\/tr><\/tbody>\n<\/table>\n<\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u3053\u306e\u305f\u3081\u30011G\u30ea\u30f3\u30af\u306b\u306f\u5f71\u97ff\u3057\u306a\u3044\u554f\u984c\u3067\u3082\u3001\u73fe\u4ee3\u306e\u9ad8\u901fEthernet\u30a4\u30f3\u30d5\u30e9\u30b9\u30c8\u30e9\u30af\u30c1\u30e3\u3067\u306f\u5bb9\u6613\u306bCRC\/FCS\u30a8\u30e9\u30fc\u3092\u5f15\u304d\u8d77\u3053\u3059\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u9ad8\u901f\u30ea\u30f3\u30af\u306b\u304a\u3051\u308b\u4e00\u822c\u7684\u306a\u539f\u56e0\u306b\u306f\u4ee5\u4e0b\u304c\u542b\u307e\u308c\u307e\u3059\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>\u6c5a\u308c\u305fMPO\u30b3\u30cd\u30af\u30bf<\/p><\/li><li><p>\u9650\u754c\u72b6\u614b\u306e <a target=\"_self\" href=\"https:\/\/www.l-p.com\/products\/488423.htm\">QSFP28\u5149\u30e2\u30b8\u30e5\u30fc\u30eb<\/a><\/p><\/li><li><p>\u54c1\u8cea\u306e\u52a3\u308bDAC\u30b1\u30fc\u30d6\u30eb<\/p><\/li><li><p>PCB\u4e0a\u306e\u4fe1\u53f7\u5b8c\u5168\u6027\u306e\u554f\u984c<\/p><\/li><li><p>\u71b1\u7684\u4e0d\u5b89\u5b9a\u6027<\/p><\/li><li><p>\u5149\u51fa\u529b\u306e\u4e0d\u5747\u8861<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u6700\u65b0\u306e\u30c7\u30fc\u30bf\u30bb\u30f3\u30bf\u30fc\u3067\u306f\u3001\u9ad8\u901f\u30dd\u30fc\u30c8\u3067\u7e70\u308a\u8fd4\u3057\u767a\u751f\u3059\u308bCRC\uff0fFCS\u30a8\u30e9\u30fc\u306f\u3001\u901a\u5e38\u3001\u5373\u6642\u306e\u8abf\u67fb\u3092\u8981\u3059\u308b\u52a3\u5316\u3057\u305f\u30ea\u30f3\u30af\u54c1\u8cea\u306e\u6307\u6a19\u3068\u3057\u3066\u6271\u308f\u308c\u307e\u3059\u3002.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" >\u2705 \u7d50\u8ad6\uff1aFCS\u30a8\u30e9\u30fc\u304c\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306e\u4fe1\u983c\u6027\u306b\u4e0e\u3048\u308b\u610f\u5473<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u30d5\u30ec\u30fc\u30e0\u30c1\u30a7\u30c3\u30af\u30b7\u30fc\u30b1\u30f3\u30b9\uff08FCS\uff09\u306f\u3001\u30a4\u30fc\u30b5\u30cd\u30c3\u30c8\u30cd\u30c3\u30c8\u30ef\u30fc\u30ad\u30f3\u30b0\u306b\u304a\u3051\u308b\u6700\u3082\u91cd\u8981\u306a\u6574\u5408\u6027\u691c\u8a3c\u30e1\u30ab\u30cb\u30ba\u30e0\u306e1\u3064\u3067\u3059\u3002\u30ec\u30a4\u30e4\u30fc2\u3067CRC-32\u691c\u8a3c\u3092\u7528\u3044\u308b\u3053\u3068\u3067\u3001\u30a4\u30fc\u30b5\u30cd\u30c3\u30c8\u30c7\u30d0\u30a4\u30b9\u306f\u7121\u52b9\u306a\u30c7\u30fc\u30bf\u304c\u4e0a\u4f4d\u5c64\u306e\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u307e\u305f\u306f\u30b5\u30fc\u30d3\u30b9\u306b\u5230\u9054\u3059\u308b\u524d\u306b\u3001\u7834\u640d\u3057\u305f\u30d5\u30ec\u30fc\u30e0\u3092\u8fc5\u901f\u306b\u691c\u51fa\u3067\u304d\u307e\u3059\u3002FCS\u691c\u8a3c\u304c\u5931\u6557\u3057\u305f\u5834\u5408\u3001\u305d\u306e\u539f\u56e0\u306f\u901a\u5e38\u3001TCP\u3084\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u5c64\u30d7\u30ed\u30c8\u30b3\u30eb\u3067\u306f\u306a\u304f\u3001\u7269\u7406\u7684\u306a\u4f1d\u9001\u7d4c\u8def\u306b\u95a2\u9023\u3057\u3066\u3044\u307e\u3059\u3002.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1200\" height=\"675\" src=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/1fe7cb7bfbf243bab5a0e65faafcf36e.jpg\" alt=\"What FCS Errors Mean for Network Reliability\" class=\"wp-image-7276\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/1fe7cb7bfbf243bab5a0e65faafcf36e.jpg 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/1fe7cb7bfbf243bab5a0e65faafcf36e-300x169.jpg 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/1fe7cb7bfbf243bab5a0e65faafcf36e-1024x576.jpg 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/1fe7cb7bfbf243bab5a0e65faafcf36e-768x432.jpg 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/1fe7cb7bfbf243bab5a0e65faafcf36e-18x10.jpg 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u5b9f\u969b\u306e\u30a8\u30f3\u30bf\u30fc\u30d7\u30e9\u30a4\u30ba\u304a\u3088\u3073\u30c7\u30fc\u30bf\u30bb\u30f3\u30bf\u30fc\u74b0\u5883\u3067\u306f\u3001\u7e70\u308a\u8fd4\u3057\u767a\u751f\u3059\u308bCRC\/FCS\u30a8\u30e9\u30fc\u306f\u6c7a\u3057\u3066\u7121\u8996\u3057\u3066\u306f\u306a\u308a\u307e\u305b\u3093\u3002\u308f\u305a\u304b\u3067\u306f\u3042\u308b\u3082\u306e\u306e\u7d99\u7d9a\u7684\u306b\u5897\u52a0\u3059\u308b\u30a8\u30e9\u30fc\u6570\u3067\u3042\u3063\u3066\u3082\u3001\u640d\u50b7\u3057\u305f\u30a4\u30fc\u30b5\u30cd\u30c3\u30c8\u30b1\u30fc\u30d6\u30eb\u3001\u6c5a\u67d3\u3055\u308c\u305f\u30d5\u30a1\u30a4\u30d0\u30b3\u30cd\u30af\u30bf\u3001\u4e0d\u5b89\u5b9a\u306a\u4fe1\u53f7\u6574\u5408\u6027\u3001\u6545\u969c\u3057\u3066\u3044\u308bNIC\uff08\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30a4\u30b9\u30ab\u30fc\u30c9\uff09\u3001\u3042\u308b\u3044\u306f\u4e0d\u826f\u306aSFP\u3001SFP+\u3001QSFP\u3001QSFP28\u5149\u30e2\u30b8\u30e5\u30fc\u30eb\u306a\u3069\u306e\u3088\u308a\u6df1\u523b\u306a\u554f\u984c\u3092\u793a\u5506\u3057\u3066\u3044\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u30a4\u30fc\u30b5\u30cd\u30c3\u30c8\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u304c100G\u3001400G\u3001\u304a\u3088\u3073AI\u99c6\u52d5\u578b\u306e\u9ad8\u6027\u80fd\u30a4\u30f3\u30d5\u30e9\u3078\u3068\u9032\u5316\u3057\u7d9a\u3051\u308b\u4e2d\u3001\u30d3\u30c3\u30c8\u8aa4\u308a\u7387\uff08BER\uff09\u306e\u4f4e\u6e1b\u304a\u3088\u3073\u5149\u5b66\u4f1d\u9001\u306e\u5b89\u5b9a\u6027\u7dad\u6301\u306f\u3001\u307e\u3059\u307e\u3059\u91cd\u8981\u306b\u306a\u3063\u3066\u3044\u307e\u3059\u3002\u73fe\u4ee3\u306e\u9ad8\u901f\u30ea\u30f3\u30af\u306f\u975e\u5e38\u306b\u72ed\u3044\u4fe1\u53f7\u30de\u30fc\u30b8\u30f3\u3067\u52d5\u4f5c\u3059\u308b\u305f\u3081\u3001\u7269\u7406\u5c64\u306b\u304a\u3051\u308b\u308f\u305a\u304b\u306a\u4e0d\u5b8c\u5168\u6027\u3067\u3082\u3001\u3059\u3050\u306b\u30d1\u30b1\u30c3\u30c8\u7834\u640d\u3001\u518d\u9001\u4fe1\u3001\u9045\u5ef6\u306e\u5897\u52a0\u3001\u304a\u3088\u3073\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306e\u4e0d\u5b89\u5b9a\u5316\u3092\u5f15\u304d\u8d77\u3053\u3059\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u6700\u3082\u5b9f\u7528\u7684\u306a\u7d50\u8ad6\u306f\u5358\u7d14\u3067\u3059\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\">\n<code>\u7e70\u308a\u8fd4\u3057\u767a\u751f\u3059\u308bCRC\/FCS\u30a8\u30e9\u30fc\u306f\u3001\u307b\u307c\u5e38\u306b\u7269\u7406\u30ea\u30f3\u30af\u306e\u8abf\u67fb\u304c\u5fc5\u8981\u3067\u3042\u308b\u3053\u3068\u3092\u610f\u5473\u3057\u307e\u3059\u3002.<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u307b\u3068\u3093\u3069\u306e\u5834\u5408\u3001\u6700\u3082\u8fc5\u901f\u306a\u30c8\u30e9\u30d6\u30eb\u30b7\u30e5\u30fc\u30c6\u30a3\u30f3\u30b0\u624b\u9806\u306f\u4ee5\u4e0b\u306e\u901a\u308a\u3067\u3059\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\" >\n<li><p>\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30a4\u30b9\u30ab\u30a6\u30f3\u30bf\u3092\u78ba\u8a8d<\/p><\/li><li><p>\u30b1\u30fc\u30d6\u30eb\u307e\u305f\u306f\u30d5\u30a1\u30a4\u30d0\u30b8\u30e3\u30f3\u30d1\u30fc\u3092\u4ea4\u63db<\/p><\/li><li><p>\u30b3\u30cd\u30af\u30bf\u3092\u6e05\u6383\u30fb\u70b9\u691c<\/p><\/li><li><p>\u4ea4\u63db <a target=\"_self\" href=\"https:\/\/www.l-p.com\/store-25432-optics-transceivers-sfp-modules.htm\">\u5149\u30c8\u30e9\u30f3\u30b7\u30fc\u30d0\u30fc<\/a><\/p><\/li><li><p>DOM\/DDM\u8a3a\u65ad\u3092\u78ba\u8a8d<\/p><\/li>\n<\/ol>\n\n\n\n<p class=\"wp-block-paragraph\">\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30a8\u30f3\u30b8\u30cb\u30a2\u3001\u30c7\u30fc\u30bf\u30bb\u30f3\u30bf\u30fc\u904b\u7528\u8005\u3001\u304a\u3088\u3073IT\u7ba1\u7406\u8005\u306b\u3068\u3063\u3066\u3001FCS\u30ab\u30a6\u30f3\u30bf\u306f\u30a4\u30fc\u30b5\u30cd\u30c3\u30c8\u30ea\u30f3\u30af\u306e\u5065\u5168\u6027\u3092\u793a\u3059\u6700\u3082\u65e9\u671f\u304b\u3064\u6700\u3082\u4fa1\u5024\u306e\u3042\u308b\u6307\u6a19\u306e1\u3064\u3067\u3042\u308a\u7d9a\u3051\u3066\u3044\u307e\u3059\u3002.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >\u304a\u3059\u3059\u3081\u30ea\u30bd\u30fc\u30b9<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><a target=\"_self\" href=\"https:\/\/www.l-p.com\/\">LINK-PP\u516c\u5f0f\u30b9\u30c8\u30a2<\/a> SFP\u30e2\u30b8\u30e5\u30fc\u30eb<\/p><\/li><li><p><a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/ja\/knowledge-center\/how-to-test-sfp-compatibility\/\">\u5149\u30c8\u30e9\u30f3\u30b7\u30fc\u30d0\u4e92\u63db\u6027\u30ac\u30a4\u30c9<\/a><\/p><\/li><li><p>\u30d5\u30a1\u30a4\u30d0\u306e\u6e05\u6383\u304a\u3088\u3073\u70b9\u691c\u306b\u95a2\u3059\u308b\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9<\/p><\/li><li><p>\u30a4\u30fc\u30b5\u30cd\u30c3\u30c8CRC\/FCS\u30c8\u30e9\u30d6\u30eb\u30b7\u30e5\u30fc\u30c6\u30a3\u30f3\u30b0\u30c1\u30a7\u30c3\u30af\u30ea\u30b9\u30c8<\/p><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" >\u8457\u8005\u7d39\u4ecb<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u30a4\u30fc\u30b5\u30cd\u30c3\u30c8\u30c8\u30e9\u30d6\u30eb\u30b7\u30e5\u30fc\u30c6\u30a3\u30f3\u30b0\u3001\u5149\u30c8\u30e9\u30f3\u30b7\u30fc\u30d0\u4e92\u63db\u6027\u3001\u30d5\u30a1\u30a4\u30d0\u30cd\u30c3\u30c8\u30ef\u30fc\u30ad\u30f3\u30b0\u306b\u304a\u3051\u308b\u5b9f\u52d9\u7d4c\u9a13\u3092\u6301\u3064\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30a4\u30f3\u30d5\u30e9\u30b9\u30c8\u30e9\u30af\u30c1\u30e3\u30b3\u30f3\u30c6\u30f3\u30c4\u5c02\u9580\u5bb6\u304c\u57f7\u7b46.<\/p>","protected":false},"excerpt":{"rendered":"<p>\u30d5\u30ec\u30fc\u30e0\u30c1\u30a7\u30c3\u30af\u30b7\u30fc\u30b1\u30f3\u30b9\uff08FCS\uff09\u306e\u610f\u5473\u3001CRC-32\u304c\u30a4\u30fc\u30b5\u30cd\u30c3\u30c8\u30d5\u30ec\u30fc\u30e0\u306e\u7834\u640d\u3092\u3069\u306e\u3088\u3046\u306b\u691c\u51fa\u3059\u308b\u304b\u3001\u304a\u3088\u3073FCS\u30a8\u30e9\u30fc\u304c\u30b1\u30fc\u30d6\u30eb\u4e0d\u826f\u3001\u5149\u30d5\u30a1\u30a4\u30d0\u30fc\u306e\u554f\u984c\u3001\u307e\u305f\u306f\u5149\u30c8\u30e9\u30f3\u30b7\u30fc\u30d0\u30fc\u306e\u4e0d\u5177\u5408\u3068\u3088\u304f\u95a2\u9023\u3059\u308b\u7406\u7531\u306b\u3064\u3044\u3066\u8aac\u660e\u3057\u307e\u3059\u3002.<\/p>","protected":false},"author":1,"featured_media":7277,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[27],"tags":[26],"class_list":["post-7278","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-glossary","tag-optics-transceivers"],"blocksy_meta":[],"acf":[],"_links":{"self":[{"href":"https:\/\/resourceslp.szlogic.cn\/ja\/wp-json\/wp\/v2\/posts\/7278","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/resourceslp.szlogic.cn\/ja\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/resourceslp.szlogic.cn\/ja\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/ja\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/ja\/wp-json\/wp\/v2\/comments?post=7278"}],"version-history":[{"count":6,"href":"https:\/\/resourceslp.szlogic.cn\/ja\/wp-json\/wp\/v2\/posts\/7278\/revisions"}],"predecessor-version":[{"id":10688,"href":"https:\/\/resourceslp.szlogic.cn\/ja\/wp-json\/wp\/v2\/posts\/7278\/revisions\/10688"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/ja\/wp-json\/wp\/v2\/media\/7277"}],"wp:attachment":[{"href":"https:\/\/resourceslp.szlogic.cn\/ja\/wp-json\/wp\/v2\/media?parent=7278"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/ja\/wp-json\/wp\/v2\/categories?post=7278"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/ja\/wp-json\/wp\/v2\/tags?post=7278"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}