Content deleted Content added
→{{anchor|SFP+}}10 Gbit/s SFP+: copy source from Fibre Channel |
m Added non-breaking space to non-template file size, frequency, bitrate, and bandwidth values (via WP:JWB) |
||
Line 12:
SFP transceivers exist supporting [[synchronous optical networking]] (SONET), [[Gigabit Ethernet]], [[Fibre Channel]], [[Passive optical network|PON]], and other communications standards. At introduction, typical speeds were 1 Gbit/s for Ethernet SFPs and up to 4 Gbit/s for Fibre Channel SFP modules.<ref>{{cite web|url=https://www.flexoptix.net/en/transceiver/sfp-singlemode-transceiver-4g-fc-sm-1310nm-5km-10db-ddm-dom.html?co3101=18397 |title=4G Fibre Channel SFP |publisher=Flexoptix GmbH |access-date=2019-10-05}}</ref> In 2006, '''SFP+''' specification brought speeds up to 10 Gbit/s and the '''SFP28''' iteration is designed for speeds of 25 Gbit/s.<ref name="snia"/>
A slightly larger sibling is the four-lane '''Quad Small Form-factor Pluggable''' ('''QSFP'''). The additional lanes allow for speeds 4 times their corresponding SFP.
Both a '''SFP-DD''',<ref name="SFP-DD MSA"/> which allows for 100 Gbit/s over two lanes, as well as a '''QSFP-DD'''<ref name="QSFP-DD MSA"/> specifications, which allows for 400 Gbit/s over eight lanes, have been published.<ref name="Lightwave" /> These use a [[Form factor (design)|form factor]] which is directly [[Backward compatibility|backward compatible]] to their respective predecessors.<ref>{{cite web |title=Backward Compatibility: QSFP-DD/QSFP28/QSFP+/SFP+ |url=https://www.qsfptek.com/article/backward-compatibility-qsfp-dd-qsfp28-qsfp-sfp |publisher=Derek |access-date=21 July 2022}}</ref>
Line 181:
Note that the QSFP/QSFP+/QSFP28/QSFP56 are designed to be electrically backward compatible with SFP/SFP+/SFP28 or SFP56 respectively. Using a simple adapter or a special direct attached cable it is possible to connect those interfaces together using just one lane instead of four provided by the QSFP/QSFP+/QSFP28/QSFP56 form factor. The same applies to the QSFP-DD form factor with 8 lanes which can work downgraded to 4/2/1 lanes.
=== 100
<!--Information below would probably be better presented as a table-->
<!--https://members.snia.org/document/dl/26184-->
Line 189:
* Multi-mode fiber, [[LC connector]], with '''{{fontcolour|blue|#f1f5fc|blue}}''' color coding
** '''[[Fast Ethernet#100BASE-FX|FX]]''' {{snd}}1300 nm, for a distance up to 5 km.
** '''[[Fast Ethernet#100BASE-LFX|LFX]]'''
* Single-mode fiber, LC connector, with '''{{fontcolour|blue|#f1f5fc|blue}}''' color coding
** '''[[Fast Ethernet#100BASE-LX|LX]]'''{{snd}}1310 nm, for distances up to 10 km
Line 203:
=== 1 Gbit/s SFP ===
<!--Information below would probably be better presented as a table-->
* 1
** '''SX'''{{snd}}850 nm, for a maximum of 550 m at 1.25 Gbit/s (gigabit Ethernet). Other multi-mode SFP applications support even higher rates at shorter distances.<ref>{{citation |url=http://agilestar.com/p/datasheets/FTLF8524P2BNV-AS.pdf |title=Agilestar/Finisar FTLF8524P2BNV specification}}</ref>
* 1.25
** '''SX+/MX/LSX'''
* 1 to 2.5
** '''LX'''{{snd}}1310 nm, for distances up to 10 km (originally, '''LX''' just covered 5 km and '''LX10''' for 10 km followed later)
** '''EX'''{{snd}}1310 nm, for distances up to 40 km
** '''ZX'''{{snd}}1550 nm, for distances up to 80 km (depending on fiber path loss), with green extraction lever (see GLC-ZX-SM1)
** '''EZX'''{{snd}}1550 nm, for distances up to 160 km (depending on fiber path loss)
** '''BX''' (officially '''BX10'''){{snd}}1490 nm/1310 nm, Single Fiber Bi-Directional Gigabit SFP Transceivers, paired as '''BX-U''' and '''BX-D''' for uplink and downlink respectively, also for distances up to 10 km.<ref>{{citation|title=Single Fiber Bidirectional SFP Transceiver|url=http://www.interlinkweb.com/systemics/assets/product_images/mrv/MRV-OP-SFPB_A4_HI-1.pdf|archive-url=https://web.archive.org/web/20160419114354/http://www.interlinkweb.com/systemics/assets/product_images/mrv/MRV-OP-SFPB_A4_HI-1.pdf|archive-date=2016-04-19|publisher=MRV}}</ref><ref>{{citation|url=http://yamasakiot.com/yamasaki-sfp-transceivers |title=Gigabit Bidirectional SFPs |publisher=Yamasaki Optical Technology}}</ref>
** 1550 nm 40 km ('''XD'''), 80 km ('''ZX'''), 120 km ('''EX''' or '''EZX''')
** '''SFSW'''{{snd}}single-fiber single-wavelength transceivers, for bi-directional traffic on a single fiber. Coupled with CWDM, these double the traffic density of fiber links.<ref>{{cite web |url=http://www.lightwaveonline.com/articles/2002/09/single-fiber-single-wavelength-gigabit-transceivers-53448792.html|title=Single-fiber single-wavelength gigabit transceivers |access-date=2002-09-05 |work=Lightwave|date=September 5, 2002 }}</ref><ref>{{cite web |url=http://www.gigalight.com.cn/solutions/&FrontComContent_list01-12987118519831ContId=3878029b-493c-4e70-b97c-766776c55cd0&comContentId=3878029b-493c-4e70-b97c-766776c55cd0&comp_stats=comp-FrontComContent_list01-12987118519831.html |title=The principle of Single Wavelength BiDi Transceiver |publisher=Gigalight |url-status=dead |archive-url=https://web.archive.org/web/20140403232845/http://www.gigalight.com.cn/solutions/%26FrontComContent_list01-12987118519831ContId%3D3878029b-493c-4e70-b97c-766776c55cd0%26comContentId%3D3878029b-493c-4e70-b97c-766776c55cd0%26comp_stats%3Dcomp-FrontComContent_list01-12987118519831.html |archive-date=2014-04-03 |df=mdy-all }}</ref>
** [[Coarse wavelength-division multiplexing]] (CWDM) and [[dense wavelength-division multiplexing]] (DWDM) transceivers at various wavelengths achieve various maximum distances. CWDM and DWDM transceivers usually support link distances of 40, 80 and 120 km.
* 1
** [[1000BASE-T]]{{snd}}these modules incorporate significant interface circuitry for [[Physical Coding Sublayer]] recoding<ref>{{citation |url=http://www.vitesse.com/products/download.php?fid=295&number=VSC8211 |title=VSC8211 media converter/physical layer specification}}</ref> and can be used only for [[gigabit Ethernet]] because of the specific line code. They are not compatible with (or rather: do not have equivalents for) [[Fibre Channel]] or SONET. Unlike non-SFP, copper 1000BASE-T ports integrated into most routers and switches, 1000BASE-T SFPs usually cannot operate at [[100BASE-TX]] speeds.
* 100 Mbit/s copper and optical{{snd}}some vendors have shipped 100 Mbit/s limited SFPs for [[fiber-to-the-home]] applications and drop-in replacement of legacy [[100BASE-FX]] circuits. These are relatively uncommon and can be easily confused with 100 Mbit/s SFPs.<ref>{{Cite web|url=http://www.fs.com/c/100base-sfp_1668|title=Fiberstore: 100 M SFPs}}</ref>
* Although it is not mentioned in any official specification document the maximum data rate of the original SFP standard is 5 Gbit/s.<ref>{{cite web|url=http://www.siemon.com/sis/application-guide/2010-08-20-FAQs-for-SFP-plus.asp |title=FAQs for SFP+ |publisher=The Siemon Company |date=2010-08-20 |access-date=2016-02-22}}</ref>
*In recent years,{{when|date=January 2020}} SFP transceivers have been created that will allow [[2.5GBASE-T and 5GBASE-T|2.5 Gbit/s and 5 Gbit/s Ethernet]] speeds with SFPs with 2.5GBASE-T<ref>{{cite web|url=https://www.flexoptix.net/en/transceiver/sfp-t-transceiver-2h-gigabit-cat-5e-rj-45-100m-100m-1000m-2500-base-t.html?co8829=85744 |title=2.5GBASE-T Copper SFP |publisher=Flexoptix GmbH |access-date=2019-10-04}}</ref> and 5GBASE-T.<ref>{{cite web|url=https://www.flexoptix.net/en/transceiver/sfp-t-transceiver-5-gigabit-cat-5e-rj-45-70m-100m-1000m-5gbase-t.html?co8831=85745|title=5GBASE-T Copper SFP|publisher=Flexoptix GmbH|access-date=2019-10-04}}</ref>
Line 225:
[[File:10_Gbit_XFP_and_SFP_transceivers.jpg|thumb|350px|right|A [[10 Gigabit Ethernet]] [[XFP transceiver]], ''top'', and a SFP+ transceiver, ''bottom'']]
The '''SFP+''' ('''enhanced small form-factor pluggable''') is an enhanced version of the SFP that supports data rates up to 16 [[Gbit/s]]. The SFP+ specification was first published on May 9, 2006, and version 4.1 was published on July 6, 2009.<ref name="spec">{{cite web|url=https://members.snia.org/document/dl/25891|title=SFF-8431 Specifications for Enhanced Small Form Factor Pluggable Module SFP+ Revision 4.1|date=July 6, 2009|access-date=2023-09-25}}</ref> SFP+ supports 8 Gbit/s [[Fibre Channel]], [[10 Gigabit Ethernet]] and [[Optical Transport Network]] standard OTU2. It is a popular industry format supported by many network component vendors. Although the SFP+ standard does not include mention of 16 Gbit/s Fibre Channel, it can be used at this speed.<ref>{{cite web |url=http://www.tek.com/primer/characterizing-sfp-transceiver-16g-fibre-channel-rate|title=Characterizing an SFP+ Transceiver at the 16G Fibre Channel Rate |author=Tektronix | date= November 2013 }}</ref> Besides the data rate, the major difference between 8 and 16 Gbit/s Fibre Channel is the encoding method. The [[64b/66b encoding]] used for 16 Gbit/s is a more efficient encoding mechanism than [[8b/10b encoding|8b/10b]] used for 8 Gbit/s, and allows for the data rate to double without doubling the line rate.
|title = Roadmaps
|url = https://fibrechannel.org/roadmap/
Line 238:
SFP+ modules can be described as ''limiting'' or ''linear'' types; this describes the functionality of the inbuilt electronics. Limiting SFP+ modules include a signal amplifier to re-shape the (degraded) received signal whereas linear ones do not. Linear modules are mainly used with the low bandwidth standards such as [[10 Gigabit Ethernet#10GBASE-LRM|10GBASE-LRM]]; otherwise, limiting modules are preferred.<ref>{{cite web |url= http://www.lightwaveonline.com/general/the-road-to-sfp-examining-module-and-system-architectures-54884162.html |title=The road to SFP+: Examining module and system architectures |date= January 22, 2008 |author= Ryan Latchman and Bharat Tailor |work= Lightwave |access-date=2011-07-26 |archive-url=https://archive.today/20130128011127/http://www.lightwaveonline.com/articles/2008/01/the-road-to-sfp-examining-module-and-system-architectures-54884162.html |archive-date=2013-01-28 }}</ref>
=== 25
SFP28 is a 25 Gbit/s interface which evolved from the [[100 Gigabit Ethernet]] interface which is typically implemented with 4 by 25 Gbit/s data lanes. Identical in mechanical dimensions to SFP and SFP+, SFP28 implements one 28 Gbit/s lane<ref>{{Cite web|url=http://www.ethernetsummit.com/English/Collaterals/Proceedings/2015/20150414_H13_Neer.pdf|title=Ethernet Summit SFP28 examples}}</ref> accommodating 25 Gbit/s of data with encoding overhead.<ref>{{Cite web|url=http://www.cisco.com/c/en/us/products/collateral/interfaces-modules/transceiver-modules/datasheet-c78-736950.html|title=Cisco SFP28 product examples}}</ref>
Line 263:
''Quad Small Form-factor Pluggable'' (''QSFP'') transceivers are available with a variety of transmitter and receiver types, allowing users to select the appropriate transceiver for each link to provide the required ''optical reach'' over [[multi-mode fiber|multi-mode]] or [[single-mode fiber]].
; 4
; 40
; 50
; 100
; 200
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. For example, a typical 24-port QSFP+ [[19-inch rack|1U]] switch would be able to service 96x10GbE connections.<ref>{{Cite web|url=http://www.cisco.com/c/en/us/products/collateral/switches/nexus-5624q-switch/datasheet-c78-733100.html|title=Cisco Nexus 5600 specifications}}</ref><ref>{{Cite web|url=https://www.finisar.com/active-optical-cables/fcbn510qe2cxx|title=Finisar 4 x 10GbE fanout QSFP}}</ref><ref>{{Cite web|url=https://www.arista.com/assets/data/pdf/40G_FAQ.pdf|title=Arista 40Gb port to 4 x 10GbE breakout}}</ref> There also exist fanout cables to adapt a single QSFP28 port to four independent [[25 Gigabit Ethernet]] SFP28 ports (QSFP28-to-4×SFP28)<ref>{{Cite web|url=http://www.prolabs.com/products/direct-attach-cables/msa_standard/QSFP28-SFP28/QSFP28-4XSFP28-DAC-3M-NC/|title=QSFP28-to-SFP28 breakout}}</ref> as well as cables to adapt a single QSFP56 port to four independent [[50 Gigabit Ethernet]] SFP56 ports (QSFP56-to-4×SFP56).<ref>{{cite web|url=https://www.te.com/usa-en/product-4-2334236-1.html|title=QSFP56 : 4-2334236-1 Pluggable I/O Cable Assemblies|website=TE Connectivity}}</ref>
Line 791:
[[Image:SFP-side.jpg|thumb|right|Side view of SFP module. Depth, the longest dimension, is {{convert|56.5|mm|abbr=on}}.]]
The physical dimensions of the SFP transceiver (and its subsequent faster variants) are narrower than the later QSFP counterparts, which allows for SFP transceivers to be placed in QSFP ports via an inexpensive adapter.
{| class="wikitable"
| |||