QSFP
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The Quad Small Form-factor Pluggable (QSFP) is a compact, hot-pluggable transceiver used for data communications applications. It interfaces networking hardware to a fiber optic cable or active or passive electrical copper connection. It is an industry format jointly developed and supported by many network component vendors, allowing data rates from 4x10 Gbit/s.[1] The format specification is evolving to enable higher data rates; as of May 2013[update], highest possible rate is 4x28 Gbit/s (also known as QSFP28).[2]
The QSFP specification accommodates Ethernet, Fibre Channel, InfiniBand and SONET/SDH standards with different data rate options. QSFP+ transceivers are designed to carry Serial Attached SCSI, 40G Ethernet (100G using QSFP28), QDR (40G) and FDR (56G) Infiniband, and other communications standards. QSFP modules increase the port-density by 3x-4x compared to SFP+ modules.
Switch and router manufacturers implementing QSFP ports in their products frequently allow for the use of a single QSFP port as four independent 10 gigabit ethernet connections, greatly increasing port density in a 1U height 24-port switch (24 40Gb ports x 4 = 96 10GbE).[3][4][5]
QSFP has 38 pins with 4 high-speed TX pairs (CML-I) and 4 high-speed RX pairs (CML-O).[6][7]
See also
- Small form-factor pluggable transceiver (SFP)
- C Form-factor Pluggable (100 Gigabit Ethernet module)
- CXP (connector)
References
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- ↑ Lua error in package.lua at line 80: module 'strict' not found.
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- ↑ INF-8438i Specification for QSFP (Quad Small Formfactor Pluggable) Transceiver Rev 1.0 November 2006
- ↑ SFF-8436 Specification for QSFP+ 10 Gbs 4X PLUGGABLE TRANSCEIVER Rev 4.8 October 31, 2013
