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There are several specifications of Ethernet RJ-45 connection over twisted pair: 10Mbit(Ethernet), 100Mbit (Fast Ethernet), 1Gbit (Gigabit ethernet) or 10Gbit ethernet.
Ethernet is officially standardized by IEEE standard 802.3. It was originally developed by Xerox Corporation in cooperation with DEC and Intel in 1976. Nowdays ethernet over twisted pair (RJ-45 connection) runs at 10Mb, 100Mb, 1Gb or 10Gb per second. Ethernet uses a bus (very old coaxial cable) or star topology (standard UTP cable ewuipped with RJ-45 connectors).
Ethernet RJ45 connection and cable
Almost every ethernet network use Unshielded Twisted Pair (UTP) cable ended with RJ-45 connectors. Category 5 (CAT5), Category 5e or Category 6 (CAT6) cables are widely used, but other variations are available. EIA/TIA specifies RJ-45 connectors - properly called 8P8C - (ISO 8877) for UTP (unshielded twisted pair) cable. Crimping the RJ45 cable is easy.
Fast Ethernet
100BASE-TX (IEEE 802.3u) was introduced in 1995 and remained the fastest version of Ethernet before the introduction of Gigabit Ethernet. It runs on UTP data or optical fiber cable in a star wired bus topology, similar to 10BASE-T where all cables are attached to a hub. Fast Ethernet RJ-45 connected devices are generally backward compatible with existing 10BASE-T systems. The segment length for a 100BASE-T cable is limited to 100 metres. 100BASE-TX runs over two wire-pairs inside a Category 5 cable or above. Like 10BASE-T, the active pairs in a standard connection are terminated on pins 1, 2, 3 and 6.
Gigabit Ethernet
1000BASE-T (also known as IEEE 802.3ab) is a standard for Gigabit Ethernet over copper wiring. The Gigabit RJ45 connection requires, at least Category 5 cable (the same as 100BASE-TX), but Category 5e cable (Category 5 enhanced) or Category 6 cable may also be used and is often recommended. 1000BASE-T requires all four pairs to be present and is far less tolerant of poorly installed wiring than 100BASE-TX.
10Gbit Ethernet
10GBASE-T (IEEE 802.3an-2006) is a standard released in 2006 to provide 10 Gbit/s connections over unshielded or shielded twisted pair cables, over distances up to 100 metres. Category 6a cable is required to reach the full distance and category 6 may reach a distance of 55 metres. The line encoding used by 10GBASE-T is the basis for the slower 2.5GBASE-T and 5GBASE-T standard, implementing a 2.5 or 5.0 Gbit/s connection over existing category 5e or 6 cabling. Cables which will not function reliably with 10GBASE-T may successfully operate with 2.5GBASE-T or 5GBASE-T if supported by both ends.
RJ45 ethernet connection pinout
There are two standards for network RJ45 cable wiring: EIA/TIA 568A and EIA/TIA 568B. Both are correct. You may use either of them to crimp the Ethernet RJ45 network cable.
EIA/TIA 568A Ethernet UTP cable wiring diagram
Pin | Signal Name | Description | cable wire color | Name | Pin |
---|---|---|---|---|---|
1 | TX+_D1 | Transmit Data+ | White with green strip | TX+_D1 | 1 |
2 | TX-_D1 | Transmit Data- | Green with white stripe or solid green | TX-_D1 | 2 |
3 | RX+_D2 | Receive Data+ | White with orange stripe | RX+_D2 | 3 |
4 | BI+_D3 | Bi-directional+ | Blue with white stripe or solid blue | BI+_D3 | 4 |
5 | BI-_D3 | Bi-directional- | White with blue stripe | BI-_D3 | 5 |
6 | RX-_D2 | Receive Data- | Orange with white stripe or solid orange | RX-_D2 | 6 |
7 | BI+_D4 | Bi-directional+ | White with brown strip | BI+_D4 | 7 |
8 | BI-_D4 | Bi-directional- | Brown with white stripe or solid brown | BI-_D4 | 8 |
EIA/TIA 568B Ethernet UTP cable wiring diagram
Pin | Signal Name | Description | cable wire color | Name | Pin |
---|---|---|---|---|---|
1 | TX+_D1 | Transmit Data+ | White with orange stripe | TX+_D1 | 1 |
2 | TX-_D1 | Transmit Data- | Orange with white stripe or solid orange | TX-_D1 | 2 |
3 | RX+_D2 | Receive Data+ | White with green stripe | RX+_D2 | 3 |
4 | BI+_D3 | Bi-directional+ | Blue with white stripe or solid blue | BI+_D3 | 4 |
5 | BI-_D3 | Bi-directional- | White with blue stripe | BI-_D3 | 5 |
6 | RX-_D2 | Receive Data- | Green with white stripe or solid | RX-_D2 | 6 |
7 | BI+_D4 | Bi-directional+ | White with brown strip | BI+_D4 | 7 |
8 | BI-_D4 | Bi-directional- | Brown with white stripe or solid brown | BI-_D4 | 8 |
Note: It is very important that a single pair be used for pins 1 and 2; 3 and 6, 4 and 5, 7 and 8. If not, performance will be degraded.
How to wire your own RJ-45 Ethernet cable
The ethernet cable wiring is simple. You must have some RJ-45 connectors, UTP cable, Rj-45 Modular Connector Crimper and a hand. The ethernet cable,connectors and Connector Crimper are available at local computer store or most electrical centers.
Pull the cable off the reel to the desired length and cut.
Inside the ethernet cable, there are 8 color coded wires. They are twisted into 4 pairs of wires. One wire in the pair is a solid colored and the other is a primarily white with a colored stripe. Start on one end and strip the cable jacket off (about 2-3cm) using a stripper or a knife. The insulation of cable wires must remain intact!
Untwist the pairs and align the wires in the correct order (see the EIA/TIA 568B or EIA/TIA 568A pinout above ). Flatten the wires and trim the ends of the wires, leaving approximately 12-14 mm in wire length. Check the correct order, flattness and tightness of wires bundle.
Hold the RJ-45 connector (clip down) and carefully insert wires into the connector.
Each wire should be inserted as deep as possible (to the front of the RJ45 plug).
Check the wires order once again. Carefully hold the wire and firmly crimp the RJ-45 with the modular connector crimper.
Repeat the above for the second RJ45 connector of cable.
That's all. Test the Ethernet cable.
What if your Ethernet cable is failed to function?
Check the following:
Did you align wires in correct order on both ends of cable? Is pin 1 of connector wired with white-orange (EIA/TIA 568A) or white-green (EIA/TIA 568B) on both ends of cable?
If not, cut off connector and repeat above steps with NEW RJ45 connector.
Did you tightly press all metal pins of RJ45 connector?
Tightly crimp the connector with the crimper once again.
There are four most common Unshielded Twisted Pair Ethernet standards available nowdays:
Name | Speed | Standard | Wires used | Comments |
---|---|---|---|---|
10BASE-T | 10Mb/s | 802.3i | 2 pairs: pins 1,2,3,6 | Runs over four wires on a Category 3 or Category 5 cable. |
100BASE-TX | 100Mb/s | 802.3u | 2 pairs: pins 1,2,3,6 | CAT5 copper cabling with two twisted pairs. |
1000BASE-T | 1000Mb/s | 802.3ab | 4 pairs: pins 1,2,3,4,5,6,7,8 | At least Category 5 cable, with Category 5e strongly recommended copper cabling with four twisted pairs. Each pair is used in both directions simultaneously |
10GBASE-T | 10000Mb/s | 802.3an | 4 pairs: pins 1,2,3,4,5,6,7,8 | Uses category 6a cable. |
Ethernet UTP cable length:
Each network segment cable length may be up to 100 meters, although several chip manufacturers claim 150 meters. Autonegotiation is a requirement for using 1000BASE-T, according to the standard. Several device drivers will allow you to force 1000 Mbps full duplex to eliminate autonegotiation issues.
UTP network cabling
Category 5 cable, commonly known as Cat 5, is an unshielded twisted pair cable type designed for high signal integrity. With the 2001 introduction of the TIA/EIA-568-B standard for RJ-45 connection, the category 5 cabling specification was obsoleted and superseded by the category 5e specification.
The original specification for category 5 cable was defined in ANSI/TIA/EIA-568-A, with clarification in TSB-95. These documents specified performance characteristics and test requirements for frequencies of up to 100 MHz. Category 5 cable included four twisted pairs in a single cable jacket. It was most commonly used for 100Mbit/s networks, such as 100BASE-TX Ethernet, although IEEE 802.3ab defined standards for 1000BASE-T - gigabit Ethernet over category 5 cable. Cat 5 cable typically had three twists per inch of each twisted pair of 24 gauge copper wires within the cable. The twisting of the cable reduces electrical interference and crosstalk.
Cat 5e cable is an enhanced version of Cat 5 that adds specifications for far-end crosstalk, usually used for gigabit ethernet. Cat 5e cable does not enable longer cable distances for Ethernet networks: horizontal cables are still limited to a maximum of 90 m in length. Cat 5e cable performance characteristics and test methods are defined in TIA/EIA-568-B.2-2001.
Category 6 cable, commonly referred to as Cat 6, is a standardized twisted pair cable for Ethernetand other network physical layers that is backward compatible with the Category 5/5e and Category 3 cable standards. Compared with Cat 5 and Cat 5e, Cat 6 features more stringent specifications for crosstalk and system noise. The cable standard also specifies performance of up to 250 MHz compared to 100 MHz for Cat 5 and Cat 5e. Whereas Category 6 cable has a reduced maximum length of 55 meters when used for 10GBASE-T, Category 6A cable is characterized to 500 MHz and has improved alien crosstalk characteristics, allowing 10GBASE-T to be run for the same 100 meter maximum distance as previous Ethernet variants.
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Small Form-factor Pluggable connected to a pair of fiber optic cables.
The small form-factor pluggable (SFP) is a compact, hot-pluggableoptical moduletransceiver used for both telecommunication and data communications applications. The form factor and electrical interface are specified by a multi-source agreement (MSA) under the auspices of the Small Form Factor Committee.[1] It is a popular industry format jointly developed and supported by many network component vendors.
An SFP interface on networking hardware is a modular (plug-and-play) slot for a variable, media-specific transceiver in order to connect a fiber optic cable or sometimes a copper cable.[2] SFP transceivers exist supporting SONET, Gigabit Ethernet, Fibre Channel, and other communications standards. At introduction, speeds were limited to 1 Gbit/s. The enhanced small form-factor pluggable transceiver (SFP+) brought speeds up to 10 Gbit/s and the SFP28 iteration is designed for speeds of 25 Gbit/s.[3] The SFP replaced the larger GBIC in most applications, and has been referred to as a Mini-GBIC by some vendors.[4]
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. The latest published variant is QSFP28 variant allowing speeds up to 100 Gbit/s.[5] There are inexpensive adapters allowing SFP transceivers to be placed in a QSFP port.
Both a SFP-DD,[6] which allows for 100 Gbit/s over two lanes, as well as a QSFP-DD[7] specifications, which allows for 400 Gbit/s over eight lanes, have been published. These use a formfactor which is backwardly compatible to their respective predecessors. An alternative competing solution, the OSFP (Octal Small Format Pluggable) transceiver is also intended for 400Gbps fiber optic links between network equipment via 8 x 50 Gbps electrical data lanes.[8] It is slightly larger version than the QSFP formfactor which is capable of handling larger power outputs. The OSFP standard was initially announced on November 15, 2016.[9] Its proponents say a low cost adapter will allow for QSFP module compatibility.[10]
- 1SFP Types
- 2QSFP types
SFP Types[edit]
SFP transceivers are available with a variety of transmitter and receiver specifications, allowing users to select the appropriate transceiver for each link to provide the required optical reach over the available optical fiber type (e.g. multi-mode fiber or single-mode fiber). Transceivers are also designated by their transmission speed. SFP modules are commonly available in several different categories.
1 Gbit/s SFP[edit]
- 1 Gbit/s multi-mode fiber, LC connector, with black or beige extraction lever[1]
- SX – 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.[11]
- 1.25 Gbit/s multi-mode fiber, LC connector, extraction lever colors not standardised
- SX+/MX/LSX (name dependent on manufacturer) – 1310 nm, for a distance up to 2 km.[12] Not compatible with SX or 100BASE-FX. Based on LX but engineered to work with a multi-mode fiber using a standard multi-mode patch cable rather than a mode-conditioning cable commonly used to adapt LX to multi-mode.
- 1 to 2.5 Gbit/s single-mode fiber, LC connector, with blue extraction lever[1]
- LX – 1310 nm, for distances up to 10 km (originally, LX just covered 5 km and LX10 for 10 km followed later)
- EX – 1310 nm, for distances up to 40 km [13]
- ZX – 1550 nm, for distances up to 80 km (depending on fiber path loss), with green extraction lever (see GLC-ZX-SM1)[13]
- EZX – 1550 nm, for distances up to 160 km (depending on fiber path loss)[13]
- BX (officially BX10) – 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.[14][15] Variations of bidirectional SFPs are also manufactured which use 1550 nm in one direction, and higher transmit power versions with link length capabilities up to 80 km.
- 1550 nm 40 km (XD), 80 km (ZX), 120 km (EX or EZX)
- SFSW – Single Fiber Single Wavelength transceivers, for bi-directional traffic on a single fiber. Coupled with CWDM, these double the traffic density of fiber links.[16][17]
- CWDM and DWDM transceivers at various wavelengths achieving various maximum distances. CWDM and DWDM transceiver usually support 40 km, 80 km and 120 km link distance.[18][19]
- 1 Gbit/s for copper twisted pair cabling, 8P8C (RJ-45) connector
- 1000BASE-T – these modules incorporate significant interface circuitry for Physical Coding Sublayer recoding[20] and can only be used for gigabit Ethernet because of the specific line code. They are not compatible with (or rather: do not have equivalents for) Fiber 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 – 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 1 Gbit/s SFPs.[21]
- Although it is not mentioned in any official specification document the maximum data rate of the original SFP standard is 5 Gbit/s.[22] This was eventually used by the DDR Infiniband especially in its four lane QSFP form.
10 Gbit/s SFP+[edit]
A 10 Gigabit EthernetXFP transceiver and a SFP+ transceiver side by side.
The enhanced small form-factor pluggable (SFP+) 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 published on July 6, 2009.[23] 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.[24][a]
SFP+ also introduces direct attach for connecting two SFP+ ports without dedicated transceivers. Direct attach cables (DAC) exist in passive (up to 7 m), active (up to 15 m), and active optical (AOC, up to 100 m) variants.
10 Gbit/s SFP+ modules are exactly the same dimensions as regular SFPs, allowing the equipment manufacturer to re-use existing physical designs for 24 and 48-port switches and modular line cards. In comparison to earlier XENPAK or XFP modules, SFP+ modules leave more circuitry to be implemented on the host board instead of inside the module.[25] Through the use of an active electronic adapter, SFP+ modules may be used in older equipment with XENPAK ports [26] and X2 ports.[27][28]
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 10GBASE-LRM; otherwise, limiting modules are preferred.[29]
25 Gbit/s SFP28[edit]
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[30] accommodating 25 Gbit/s of data with encoding overhead.[31]
SFP28 modules exist supporting single-[32] or multi-mode[33] fiber connections, active optical cable[34] and direct attach copper.[35][36]
cSFP[edit]
The compact small form-factor pluggable (cSFP) is a version of SFP with the same mechanical form factor allowing two independent bidirectional channels per port. It is used primarily to increase port density and decrease fiber usage per port.[37][38]
SFP-DD[edit]
The small form-factor pluggable double density (SFP-DD) multi source agreement is a new standard for doubling port density. According to the SFD-DD MSA website: 'Network equipment based on the SFP-DD will support legacy SFP modules and cables, and new double density products.'[39]
QSFP types[edit]
QSFP+ 40 Gb Transceiver
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 or single-mode fiber.
4 Gbit/s QSFP[edit]
- The original QSFP document specified four channels carrying Gigabit Ethernet, 4GFC (FiberChannel), or DDR InfiniBand.[40]
40 Gbit/s QSFP+[edit]
- QSFP+ is an evolution of QSFP to support four 10 Gbit/sec channels carrying 10 Gigabit Ethernet, 10GFC FiberChannel, or QDR InfiniBand.[41] The 4 channels can also be combined into a single 40 Gigabit Ethernet link.
50 Gbit/s QSFP14[edit]
- The QSFP14 standard is designed to carry FDR InfiniBand, SAS-3.[42] or 16G Fibre Channel
100 Gbit/s QSFP28[edit]
- The QSFP28 standard[5] is designed to carry 100 Gigabit Ethernet, EDR InfiniBand, or 32G Fibre Channel. Sometimes this transceiver type is also referred to as 'QSFP100' or '100G QSFP'[43] for sake of simplicity.
200 Gbit/s QSFP56[edit]
- QSFP56 is designed to carry 200 Gigabit Ethernet, HDR InfiniBand, or 64G Fibre Channel. The biggest enhancement is that QSFP56 uses PAM-4 encoding instead of NRZ. As of April 2019, this new standard has not been published, but transceivers already are in use.[44] It uses the same physical specifications as QSFP28 (SFF-8665), with electrical specifications from SFF-8024[45] and the still unpublished revision 3.0 of SFF-8636.[46] Sometimes this transceiver type is referred to as '200G QSFP'[47] for sake of simplicity.
Fanout[edit]
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+ 1U switch would be able to service 96x10GbE connections.[48][49][50] There also exist fanout cables to adapt a single QSFP28 port to four independent 25 gigabit ethernet SFP28 ports (QSFP28-to-4×SFP28)[51] as well as cables to adapt a single QSFP56 port to four independent 50 gigabit ethernet SFP56 ports (QSFP56-to-4×QSFP56).[52]
Applications[edit]
Ethernet switch with two empty SFP slots (lower left)
SFP sockets are found in Ethernet switches, routers, firewalls and network interface cards. They are used in Fibre Channel host adapters and storage equipment. Because of their low cost, low profile, and ability to provide a connection to different types of optical fiber, SFP provides such equipment with enhanced flexibility.
Standardization[edit]
The SFP transceiver is not standardized by any official standards body, but rather is specified by a multi-source agreement (MSA) among competing manufacturers. The SFP was designed after the GBIC interface, and allows greater port density (number of transceivers per cm along the edge of a mother board) than the GBIC, which is why SFP is also known as mini-GBIC. The related Small Form Factor transceiver is similar in size to the SFP, but is soldered to the host board as a through-hole device, rather than plugged into an edge-card socket.[citation needed]
However, as a practical matter, some networking equipment manufacturers engage in vendor lock-in practices whereby they deliberately break compatibility with 'generic' SFPs by adding a check in the device's firmware that will enable only the vendor's own modules.[53] Third-party SFP manufacturers have introduced SFPs with 'blank' programmable EEPROMs which may be reprogrammed to match any vendor ID.[54]
Signals[edit]
Front view of SFP module with integrated LC connector. The blue extraction lever indicates the module is designed for use with single-mode optical fiber.
OC-3 SFP internal. The top, metal canister is the transmitting laser diode, the bottom, plastic canister is the receiving photo diode.
The SFP transceiver contains a PCB with 20 pads that mates on the rear with the SFP electrical connector in the host system.QSFP has 38 pins including 4 high-speed TX pairs (CML-I) and 4 high-speed RX pairs (CML-O).[40][41]
Pin | Name | Function |
---|---|---|
1 | VeeT | Transmitter ground |
2 | Tx_Fault | Transmitter fault indication |
3 | Tx_Disable | Optical output disabled when high |
4 | SDA | 2-wire Serial Interface Data Line |
5 | SCL | 2-wire Serial Interface Clock |
6 | Mod_ABS | Module Absent, connected to VeeT or VeeR in the module |
7 | RS0 | Rate Select 0 |
8 | Rx_LOS | Receiver Loss of Signal Indication |
9 | RS1 | Rate Select 1 |
10 | VeeR | Receiver ground |
11 | VeeR | Receiver ground |
12 | RD- | Inverted received data |
13 | RD+ | Received data |
14 | VeeR | Receiver ground |
15 | VccR | Receiver power (3.3 V, max. 300 mA) |
16 | VccT | Transmitter power (3.3 V, max. 300 mA) |
17 | VeeT | Transmitter ground |
18 | TD+ | Transmit data |
19 | TD- | Inverted transmit data |
20 | VeeT | Transmitter ground |
Pad | Symbol | Name/Description |
1 | GND | Ground |
2 | Tx2n | Transmitter Inverted Data Input |
3 | Tx2p | Transmitter Non-inverted Data Input |
4 | GND | Ground |
5 | Tx4n | Transmitter Inverted Data Input |
6 | Tx4p | Transmitter Non-inverted Data Input |
7 | GND | Ground |
8 | ModSelL | Module Select |
9 | ResetL | Module Reset |
10 | Vcc-Rx | +3.3V Power Supply Receiver |
11 | SCL | Two-wire Serial Interface Clock |
12 | SDA | Two-wire Serial Interface Data |
13 | GND | Ground |
14 | Rx3p | Receiver Non-Inverted Data Output |
15 | Rx3n | Receiver Inverted Data Output |
16 | GND | Ground |
17 | Rx1p | Receiver Non-Inverted Data Output |
18 | Rx1n | Receiver Inverted Data Output |
19 | GND | Ground |
20 | GND | Ground |
21 | Rx2n | Receiver Inverted Data Output |
22 | Rx2p | Receiver Non-Inverted Data Output |
23 | GND | Ground |
24 | Rx4n | Receiver Inverted Data Output |
25 | Rx4p | Receiver Non-Inverted Data Output |
26 | GND | Ground |
27 | ModPrsL | Module Present |
28 | IntL | Interrupt |
29 | Vcc-Tx | +3.3V Power Supply Transmitter |
30 | Vcc1 | +3.3V Power Supply |
31 | LPMode | Low Power Mode |
32 | GND | Ground |
33 | Tx3p | Transmitter Non-inverted Data Input |
34 | Tx3n | Transmitter Inverted Data Input |
35 | GND | Ground |
36 | Tx1p | Transmitter Non-inverted Data Input |
37 | Tx1n | Transmitter Inverted Data Input |
38 | GND | Ground |
Mechanical dimensions[edit]
Side view of SFP module (length is 6 cm).
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. Both are smaller than the XFP transceiver.
SFP[1] | QSFP[40] | XFP[55] | |
---|---|---|---|
Height | 8.5 mm (0.33 inches) | 8.5 mm (0.33 inches) | 8.5 mm (0.33 inches) |
Width | 13.4 mm (0.53 inches) | 18.35 mm (0.72 inches) | 18.35 mm (0.72 inches) |
Depth | 56.5 mm (2.22 inches) | 72.4 mm (2.85 inches) | 78.0 mm (3.10 inches) |
EEPROM information[edit]
The SFP MSA defines a 256-byte memory map into an EEPROM describing the transceiver's capabilities, standard interfaces, manufacturer, and other information, which is accessible over an I²C interface at the 8-bit address 1010000X (A0h).
Digital diagnostics monitoring[edit]
Modern optical SFP transceivers support standard digital diagnostics monitoring (DDM) functions.[56] This feature is also known as digital optical monitoring (DOM). Modules with this capability enable the end user to monitor parameters of the SFP, such as optical output power, optical input power, temperature, laser bias current, and transceiver supply voltage, in real time. This functionality is commonly implemented for monitoring on routers, switches and optical transport equipment via SNMP.
A DDM interface allows end users to display diagnostics data and alarms for fiber optical transceivers and can be used to diagnose why a transceiver optics is not working, increasing popularity of transceiver optics with DDM. Generally, the transceiver vendor sets the thresholds that trigger a high alarm, low alarm, high warning, or low warning before shipment. In order to be able to take advantage of DDM/DOM capability, most of the modern pluggable transceiver optics support DDM/DOM interfaces.[citation needed]
See also[edit]
Notes[edit]
- ^Besides the data rate, the major difference between 8 and 16 Gbit/s Fibre Channel is the encoding method. 64b/66b encoding used for 16 Gbit/s is a more efficient encoding mechanism than 8b/10b used for 8 Gbit/s, and allows for the data rate to double without doubling the line rate. The result is a 14.025 Gbit/s line rate for 16 Gbit/s Fibre Channel.
References[edit]
Wikimedia Commons has media related to Small Form-factor Pluggable. |
- ^ abcdeSFF Committee (May 1, 2001), INF-8074i Specification for SFP (Small Formfactor Pluggable) Transceiver(PDF), retrieved March 16, 2017
- ^'SFP Definition from PC Magazine Encyclopedia'. www.pcmag.com. Retrieved May 10, 2018.
- ^'SFF-8402: SFP+ 1X 28 Gb/s Pluggable Transceiver Solution (SFP28)'. 1.9. SNIA SFF Committee. September 13, 2014. Retrieved March 26, 2019.
- ^'Cisco MGBSX1 Gigabit SX Mini-GBIC SFP Transceiver'. Retrieved March 25, 2018.
- ^ ab'SFF-8665: QSFP+ 28 Gb/s 4X Pluggable Transceiver Solution (QSFP28)'. 1.9. SNIA SFF Committee. June 29, 2015. Retrieved March 26, 2019.
- ^'SFP-DD MSA'.
- ^'QSFP-DD MSA'.
- ^'Lightwave Online news article re: 400Gb'.
- ^'OSFP MSA'.
- ^OSFP to QSFP Adapter
- ^Agilestar/Finisar FTLF8524P2BNV specification(PDF)
- ^'PROLINE 1000BASE-SX EXT MMF SFP F/CISCO 1310NM 2KM - SFP-MX-CDW - Ethernet Transceivers'. CDW.com. Retrieved January 2, 2017.
- ^ abc1000BASE Gigabit Ethernet SFP Transceiver, Optcore, retrieved March 26, 2013
- ^Single Fiber Bidirectional SFP Transceiver(PDF), MRV, archived from the original(PDF) on April 19, 2016
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Retrieved from 'https://en.wikipedia.org/w/index.php?title=Small_form-factor_pluggable_transceiver&oldid=901548577'
Design Today for Future Speeds
Narrator: As data usage continues to rise, designers need interconnect solutions that can provide increased data rates while maintaining a consistent level of reliable performanc
zQSFP+ Interconnects
Faster Connections for Data Transfer
Faster Connections for Data Transfer
Narrator: TE Connectivity’s comprehensive zQSFP+ interconnect portfolio helps to meet this need by offering 2.5 times more throughput than existing interconnect solutions while offering backwards compatibility with QSFP/QSFP+ products. These features provide a flexible upgrade path to increase data rates from 10 Giga-bits per second to 25 Giga-bits per second.
zQSFP+ Interconnects
- Faster Connections for Data Transfer
- Four channels of 25 Gb/s data rates
- Supports 100 Gb/s Ethernet and InfiniBand EDR requirements
Narrator: Providing four channels with data rates of 25 Gigabytes per second, the zQSFP+ interconnect supports 100 Giga-bit per second Ethernet and 100 Giga-bit per second InfiniBand Enhanced Data Rate requirements for high speed designs.
Lucas Benson, Product Manager, TE Connectivity
Benson: TE’s zQSFP+ Interconnects help optical module and cable assembly speeds reach new levels, increasing data transfer rates by 2.5 times over existing solutions.
zQSFP+ Interconnects
- Faster Connections for Data Transfer
- zQSFP+ interconnect provides excellent EMI protection through 25 Gb/s
Benson: And since increased data rates can make EMI protection more challenging, the zQSFP+ interconnect product portfolio is designed to enable improved EMI protection through 25 gigabytes per second.
Pdf Cable Wenglor S2fp Connector Pin Maps
zQSFP+ Interconnects
- Faster Connections for Data Transfer
- Single row cages are belly-to-belly compatible
- Able to separate ports for better thermal transfer
Benson: Design flexibility for thermal management is crucial for our customers. As such, our single row cages have been designed to be belly to belly compatible so that in higher load applications customers can separate ports for improved thermal transfer.
Lucas Benson, Product Manager, TE Connectivity
Benson: With a comprehensive portfolio including behind and thru bezel cages with various lightpipe and heat sink options, designers achieve ultimate design flexibility in function and performance.
Product Features
Comprehensive interconnect portfolio providing customers with one of widest product selections in market
Comprehensive interconnect portfolio providing customers with one of widest product selections in market
Benson: In response to the significant market demand for technology in data center applications, TE offers a comprehensive zQSFP+ interconnect product portfolio providing our customers with one of the widest product selections in the market.
zQSFP+ Interconnects
- Enabling Communication in Harsh Environments
- Increased Data Rates
- Improved EMI Performance
- Comprehensive Product Portfolio
Narrator: Enable faster speeds in today’s designs with TE’s comprehensive zQSFP+ interconnect portfolio, providing a scalable interface to easily move from 10 Giga-bits per second to 25 Giga-bit per second data rates.
Narrator:
- Increased Data Rates.
- Improved EMI Performance.
- Comprehensive Product Portfolio.
- zQSFP+ interconnects from TE Connectivity.
Contact your TE representative or distributor today.
Narrator:
Want to learn more? Contact your TE representative or distributor today!
Want to learn more? Contact your TE representative or distributor today!
TE Connectivity, TE, TE connectivity (logo), and EVERY CONNECTION COUNTS are trademarks of the TE Connectivity Ltd. Family of companies. zQSFP+ is a part of the ZXP® family of connectors and uses ZXP technology. ZXP is a trademark of Molex, LLC.
Narrator:
TE Connectivity
Pdf Cable Wenglor S2fp Connector Pin Map Location
Every Connection Counts