{"id":6140,"date":"2025-04-30T00:00:00","date_gmt":"2025-04-30T00:00:00","guid":{"rendered":"https:\/\/lp.szlogic.cn\/knowledge-center\/optical-transceiver-form-factors-sfp-to-qsfp28\/"},"modified":"2026-06-22T09:38:58","modified_gmt":"2026-06-22T09:38:58","slug":"optical-transceiver-form-factors-sfp-to-qsfp28","status":"publish","type":"post","link":"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/optical-transceiver-form-factors-sfp-to-qsfp28","title":{"rendered":"T\u00ecm hi\u1ec3u s\u1ef1 kh\u00e1c bi\u1ec7t gi\u1eefa c\u00e1c b\u1ed9 thu ph\u00e1t quang SFP, SFP+, SFP28, QSFP+ v\u00e0 QSFP28"},"content":{"rendered":"
\"Understanding<\/figure>\n\n\n\n

Trong th\u1ebf gi\u1edbi m\u1ea1ng t\u1ed1c \u0111\u1ed9 cao, <\/span>b\u1ed9 thu ph\u00e1t quang<\/strong><\/span> \u0111\u00f3ng vai tr\u00f2 then ch\u1ed1t trong vi\u1ec7c k\u00edch ho\u1ea1t vi\u1ec7c truy\u1ec1n d\u1eef li\u1ec7u qua c\u00e1c m\u1ea1ng c\u00e1p quang. Trong s\u1ed1 c\u00e1c d\u1ea1ng h\u00ecnh th\u1ee9c \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i nh\u1ea5t l\u00e0 SFP, SFP+, SFP28, QSFP+ v\u00e0 QSFP28. M\u1eb7c d\u00f9 nh\u1eefng module n\u00e0y c\u00f3 v\u1ebb t\u01b0\u01a1ng t\u1ef1 nhau khi nh\u00ecn tho\u00e1ng qua, ch\u00fang l\u1ea1i kh\u00e1c bi\u1ec7t \u0111\u00e1ng k\u1ec3 v\u1ec1 hi\u1ec7u n\u0103ng, \u1ee9ng d\u1ee5ng v\u00e0 kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch. Trong b\u00e0i blog n\u00e0y, ch\u00fang ta s\u1ebd ph\u00e2n t\u00edch chi ti\u1ebft s\u1ef1 kh\u00e1c bi\u1ec7t gi\u1eefa ch\u00fang tr\u00ean nhi\u1ec1u ph\u01b0\u01a1ng di\u1ec7n \u0111\u1ec3 gi\u00fap b\u1ea1n ch\u1ecdn \u0111\u00fang <\/span>b\u1ed9 thu ph\u00e1t quang<\/strong><\/span> cho nhu c\u1ea7u c\u1ee7a b\u1ea1n.<\/span><\/p>\n\n\n\n

T\u1ed5ng quan v\u1ec1 c\u00e1c d\u1ea1ng h\u00ecnh th\u1ee9c b\u1ed9 thu ph\u00e1t quang<\/h2>\n\n\n\n

B\u1ed9 thu ph\u00e1t quang v\u00e0 c\u00e1c d\u1ea1ng h\u00ecnh th\u1ee9c c\u1ee7a ch\u00fang l\u00e0 g\u00ec?<\/h3>\n\n\n\n

M\u1ed9t b\u1ed9 thu ph\u00e1t quang l\u00e0 m\u1ed9t thi\u1ebft b\u1ecb chuy\u1ec3n \u0111\u1ed5i t\u00edn hi\u1ec7u \u0111i\u1ec7n th\u00e0nh t\u00edn hi\u1ec7u quang v\u00e0 ng\u01b0\u1ee3c l\u1ea1i, t\u1eeb \u0111\u00f3 cho ph\u00e9p truy\u1ec1n d\u1eef li\u1ec7u qua c\u00e1p quang. Nh\u1eefng module n\u00e0y r\u1ea5t c\u1ea7n thi\u1ebft cho m\u1ea1ng hi\u1ec7n \u0111\u1ea1i, v\u00ec ch\u00fang t\u1ea1o \u0111i\u1ec1u ki\u1ec7n cho vi\u1ec7c giao ti\u1ebfp t\u1ed1c \u0111\u1ed9 cao gi\u1eefa c\u00e1c thi\u1ebft b\u1ecb. C\u00e1c m\u00f4-\u0111un b\u1ed9 thu ph\u00e1t quang<\/a> c\u00f3 nhi\u1ec1u d\u1ea1ng h\u00ecnh th\u1ee9c kh\u00e1c nhau, x\u00e1c \u0111\u1ecbnh k\u00edch th\u01b0\u1edbc v\u1eadt l\u00fd, h\u00ecnh d\u00e1ng v\u00e0 kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch v\u1edbi thi\u1ebft b\u1ecb m\u1ea1ng.<\/p>\n\n\n\n

\n\n<\/colgroup>

H\u1ec7 s\u1ed1 d\u1ea1ng<\/p><\/th>

25Gbps<\/p><\/th>

M\u00f4 t\u1ea3<\/p><\/th><\/tr>

GBIC<\/p><\/td>

T\u1ed1i \u0111a 1 Gbps<\/p><\/td>

Ti\u00eau chu\u1ea9n \u0111\u1ea7u ti\u00ean cho c\u00e1c b\u1ed9 thu ph\u00e1t c\u00f3 th\u1ec3 thay th\u1ebf n\u00f3ng.<\/p><\/td><\/tr>

SFP<\/p><\/td>

T\u1ed1i \u0111a 4 Gbps<\/p><\/td>

Phi\u00ean b\u1ea3n nh\u1ecf h\u01a1n c\u1ee7a GBIC, \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng r\u1ed9ng r\u00e3i.<\/p><\/td><\/tr>

SFP+<\/p><\/td>

T\u1ed1i \u0111a 10 Gbps<\/p><\/td>

Phi\u00ean b\u1ea3n n\u00e2ng cao c\u1ee7a SFP, v\u1eabn chi\u1ebfm \u01b0u th\u1ebf.<\/p><\/td><\/tr>

QSFP<\/p><\/td>

T\u1ed1i \u0111a 4 Gbps<\/p><\/td>

B\u1ed9 thu ph\u00e1t b\u1ed1n k\u00eanh d\u00e0nh cho t\u1ed1c \u0111\u1ed9 cao h\u01a1n.<\/p><\/td><\/tr>

QSFP+<\/p><\/td>

T\u1ed1i \u0111a 40 Gbps<\/p><\/td>

Chi\u1ebfm \u01b0u th\u1ebf cho t\u1ed1c \u0111\u1ed9 d\u1eef li\u1ec7u 40 Gbps.<\/p><\/td><\/tr>

QSFP28
<\/p><\/td>

T\u1ed1i \u0111a 100 Gbps<\/p><\/td>

Ti\u00eau chu\u1ea9n cho c\u00e1c \u1ee9ng d\u1ee5ng 100G.<\/p><\/td><\/tr><\/tbody>\n<\/table>\n<\/figure>\n\n\n\n

T\u1ea7m quan tr\u1ecdng c\u1ee7a c\u00e1c d\u1ea1ng h\u00ecnh th\u1ee9c trong m\u1ea1ng<\/h3>\n\n\n\n

C\u00e1c d\u1ea1ng h\u00ecnh th\u1ee9c \u0111\u00f3ng vai tr\u00f2 then ch\u1ed1t trong m\u1ea1ng. Ch\u00fang x\u00e1c \u0111\u1ecbnh kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch v\u1edbi c\u00e1c switch, router v\u00e0 ph\u1ea7n c\u1ee9ng kh\u00e1c. Vi\u1ec7c l\u1ef1a ch\u1ecdn \u0111\u00fang d\u1ea1ng h\u00ecnh th\u1ee9c \u0111\u1ea3m b\u1ea3o t\u00edch h\u1ee3p li\u1ec1n m\u1ea1ch v\u00e0 hi\u1ec7u n\u0103ng t\u1ed1i \u01b0u. C\u00e1c d\u1ea1ng h\u00ecnh th\u1ee9c nh\u1ecf h\u01a1n, nh\u01b0 SFP, ti\u1ebft ki\u1ec7m kh\u00f4ng gian v\u00e0 gi\u1ea3m ti\u00eau th\u1ee5 \u0111i\u1ec7n n\u0103ng, trong khi c\u00e1c d\u1ea1ng l\u1edbn h\u01a1n, nh\u01b0 QSFP28, h\u1ed7 tr\u1ee3 t\u1ed1c \u0111\u1ed9 d\u1eef li\u1ec7u cao h\u01a1n cho c\u00e1c \u1ee9ng d\u1ee5ng \u0111\u00f2i h\u1ecfi kh\u1eaft khe.<\/p>\n\n\n\n

So s\u00e1nh c\u00e1c lo\u1ea1i b\u1ed9 thu ph\u00e1t quang kh\u00e1c nhau<\/h2>\n\n\n\n

SFP<\/h3>\n\n\n\n

The b\u1ed9 thu ph\u00e1t d\u1ea1ng nh\u1ecf c\u00f3 th\u1ec3 c\u1eafm r\u1eddi (SFP)<\/strong> l\u00e0 m\u1ed9t trong nh\u1eefng module b\u1ed9 thu ph\u00e1t quang \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i nh\u1ea5t trong m\u1ea1ng. Thi\u1ebft k\u1ebf nh\u1ecf g\u1ecdn c\u1ee7a n\u00f3 khi\u1ebfn n\u00f3 l\u00fd t\u01b0\u1edfng cho c\u00e1c m\u00f4i tr\u01b0\u1eddng c\u00f3 h\u1ea1n ch\u1ebf v\u1ec1 kh\u00f4ng gian. C\u00e1c m\u00f4-\u0111un SFP<\/a> h\u1ed7 tr\u1ee3 t\u1ed1c \u0111\u1ed9 truy\u1ec1n d\u1eef li\u1ec7u t\u1ed1i \u0111a 4 Gbps, ph\u00f9 h\u1ee3p cho c\u00e1c \u1ee9ng d\u1ee5ng nh\u01b0 m\u1ea1ng Ethernet v\u00e0 m\u1ea1ng Fiber Channel.<\/p>\n\n\n\n

T\u00ednh n\u0103ng:<\/h4>\n\n\n\n