Cisco SFP Datasheet

As a world renowned enterprise in communication and information technology industry, Cisco’s networking products have been gained worldwide reputation among these years. Fiber optical transceiver is a networking technology used within buildings in local-area networks and across great distances in wide-area networks. 1000BASE SFP modules with various protocols offer optimized 1G Ethernet connectivity for diverse networking environments. Cisco SFP modules include 1000BASE-T SFP, 1000BASE-SX SFP, 1000BASE-LX/LH SFP, 1000BASE-EX SFP, etc. This passage would put emphasis on Cisco SFP modules and comprehensively present the Cisco SFP datasheet.

Overview on Cisco 1000BASE SFP Modules

Cisco’s industry-standard SFP is a hot-swappable input/output device that plugs into a Gigabit Ethernet port/slot, linking the port with the fiber optic network. SFPs can be used and interchanged on a wide variety of Cisco products and can be intermixed in combinations of IEEE 802.3z- compliant 1000BaseSX, 1000BaseLX/LH, or 1000BaseZX interfaces on a port-by-port basis. All of the Cisco 1000BASE SFP modules were certified and tested for superior performance, quality, and reliability. So the customers could rest assured to plug these hot-swappable input or output device into the 1 Gigabit Ethernet ports.

Cisco SFP 1G

Nowadays, they have been widely applied to data center, high-performance computing networks, enterprise core and distribution layers, and service provider applications. Basically, there are totally 12 form factors of Cisco 1000BASE SFP modules. Owing to time and space limitation, we would briefly introduce Cisco 1000BASE-SX SFP, Cisco 1000BASE-LX/LH SFP, Cisco 1000BASE-EX SFP, and Cisco 1000BASE-ZX SFP.

Cisco 1000BASE-SX SFP Datasheet

The Cisco 1000BASE-SX SFP is fully compatible with the IEEE 802.3z 1000BASE-SX standard. It operates on legacy 50 μm multimode fiber links up to 550 m and on 62.5 μm Fiber Distributed Data Interface (FDDI)-grade multimode fibers up to 220 m. This Cisco 1000BASE-SX SFP module can support up to 1 km over laser-optimized 50 μm multimode fiber cable. This Cisco multimode SFP module can be used to connect the 1000BASE SFP port on Cisco switch. The Cisco 1000BASE-SX SFP datasheet is shown as below:

Form Type SFP-GE-S-2
Max Data Rate 1000Mbps
Wavelength 1310nm
Max Transmission Distance 2km
Interface LC duplex
Fiber Type MMF
DOM Support Yes
TX Power -9.5~-3dBm
Receiver Sensitivity < -17dBm
Operating Temperature 0 to 70°C (32 to 158°F)

Cisco 1000BASE-LX/LH SFP Datasheet

The Cisco 1000BASE-LX/LH SFP is compatible with the IEEE 802.3z 1000BASE-LX standard. It operates on standard single-mode fiber-optic link spans of up to 10 km and up to 550 m on any multimode fibers. When used over legacy multimode fiber type, the transmitter should be coupled through a mode conditioning patch cable. This Cisco singlemode SFP datasheet is shown as below:

Form Type GLC-LH-SM
Max Data Rate 1000Mbps
Wavelength 1310nm
Max Transmission Distance 10km
Interface LC duplex
Fiber Type SMF
DOM Support Yes
TX Power -9.5~-3dBm
Receiver Sensitivity < -23dBm
Operating Temperature 0 to 70°C (32 to 158°F)

Cisco 1000BASE-EX SFP Datasheet

The Cisco 1000BASE-EX SFP operates on standard singlemode fiber optic link spans of up to 40 km in length. A 5-dB inline optical attenuator should be inserted between the fiber-optic cable and the receiving port on the SFP at each end of the link for back-to-back connectivity. Like the last one, the Cisco 1000BASE-EX is also a Cisco singlemode SFP module, the detailed datasheet is shown in the following table.

Form Type GLC-EX-SMD
Max Data Rate 1000Mbps
Wavelength 1310nm
Max Transmission Distance 40km
Interface LC duplex
Fiber Type SMF
DOM Support Yes
TX Power -5~0dBm
Receiver Sensitivity < -24dBm
Operating Temperature 0 to 70°C (32 to 158°F)

Cisco 1000BASE-ZX SFP Datasheet

The Cisco 1000BASE-ZX SFP module operates on standard singlemode fiber optic link spans of up to approximately 70 km in length. The SFP provides an optical link budget of 21 dB, but the precise link span length depends on multiple factors such as fiber quality, number of splices, and connectors. This Cisco singlemode SFP datasheet is shown in the following table.

Form Type GLC-ZX-SM
Max Data Rate 1000Mbps
Wavelength 1310nm
Max Transmission Distance 80km
Interface LC duplex
Fiber Type SMF
DOM Support Yes
TX Power -2~3dBm
Receiver Sensitivity < -24dBm
Operating Temperature 0 to 70°C (32 to 158°F)

Conclusion

1000BASE SFP transceiver is the most commonly used component for Gigabit Ethernet application. And Cisco SFP modules account for a large share on Gigabit Ethernet optics’ market, which are paramount for data centers, enterprises and etc. With so many types available in the market, careful notice should be given to the range of differences, both in distance and price of Cisco multimode SFP and Cisco singlemode SFP module. FS.COM will be a good choice with good compatibility, support offerings and great reputation.

SFP Transceiver Module Troubleshooting

SFP (small form-factor pluggable) is a compact, hot-pluggable transceiver module used for both telecommunication and data communications applications. With the increasing high speed data transmission demands of people, products, such as SFP+, CFP and QSFP/QSFP+ etc. have shared the market. Nonetheless, SFPs have still played an important role in telecommunication and data communication.

Transceiver-Solution

As a widely and commonly used component in data transmission, due to the incorrect operation or other factors, it is hard to avoid facing the faults in using SFP, and sometimes even result in a bad situation and heavy loss. This paper will help you to diagnose the SFP problems (take Cisco for example) and give some resolution tips. I hope it would be acted as a learning tool and a reference source for both new and experienced technicians who work in this field.

To diagnose SFP problems, you can get statistics from the browser interface, the CLI (Command Line Interface) or an SNMP (Simple Network Management Protocol) workstation. The most common SFP problems include these aspects:

  • Poor performance
  • No connectivity
  • Corrupted software

Poor Performance (or Excessive Errors) Possible Cause: The possible causes of this problem include that cabling distance is exceeded or port statistics show excessive frame check sequence (FCS), late-collision, or alignment errors. Resolution:

  • Reduce the cable length to within the recommended distances.
  • See your SFP module documentation for cabling guidelines.

No connectivity Possible Cause: This problem is more likely related to cabling. Using incorrect or bad cable, or incorrect cable wiring, or STP (Shielded Twisted Pair) checking for possible loops may probably lead to this problem. Resolution:

  • Verify the pinouts are correct for the proper application of cables.
  • Replace the cable with a tested good cable.
  • Wait 30 seconds for the port LED to turn green.

Corrupted software The corrupted software here we mentioned include the following three situations. 1.The port is placed in error-disabled state after SFP is inserted. Possible Cause: This problem is usually caused by bad or non-Cisco-approved SFP module(ie. the incompatible SFP). Resolution: Remove the SFP module from the switch and replace it with a Cisco-approved module. Use the irrdisable recovery cause GBIC-invalid global configuration command to verify the port status, and enter a time interval to recover from the error-disable state. The best advice is to use the Cisco original SFP or 100% Cisco compatible SFP (If you decide to use a third-party SFP, please ensure that your supplier is assured) that is adapted to the switch.

2.Device does not recognize the SFP module. Possible Cause: This problem is generally related to the SFP installation. Situations, such as SFP is installed upside dowm or does not snap into the slot can cause this problem. Resolution:

  • Verify that the SFP module is not installed upside down.
  • Remove the SFP module. Inspect for physical damage to the connector, the module, and the module slot.
  • Replace the SFP module with a known good SFP module.

3.Excessive errors found in port statistics. Possible Cause: Bad adapter in attached device or STP checking for possible loops can cause this problem. Resolution: Run adapter card diagnostic utility and wait 30 seconds for the port LED to turn green.

Some common error message of Cisco Switch When Using With SFP Module Error Message: Transceiver module inserted in port Explanation: The online insertion and removal (OIR) facility detected a newly inserted transceiver module for the interface specified in the error message.

Error Message: INIT_FAILURE: Detected for transceiver module in port, module disabled Explanation:An initialization failure occurred for the transceiver module for the interface specified in the error message. This condition could be caused by software, firmware, or hardware problem. As a result of the error, the module is disabled.

Recommended Action: Try reseating the module. Hardware replacement should not occur first occurrence. Before requesting hardware replacement, review troubleshooting logs with a technical support representative.


Error Message: NOT_IDENTIFIED: Detected for transceiver module in %s, module disabled Explanation: The transceiver module for the interface specified in the error message could not be identified and may not be compatible with the interface. The transceiver module specified in the error message contains a transceiver code which could not be correctly interpreted. As a result of the error, the module is disabled.

Recommended Action: Replace the module with a compatible transceiver.


Error Message: UNSUPPORTED-TRANCEIVER: Unsupported SFP transceiver found on board. Warranty/support may void Explanation: The transceiver module for the interface specified in the error message is not a Cisco supported module. As a result of the error, the module is disabled. When Cisco determines that a fault or defect can be traced to the use of third-party transceivers installed by a customer or reseller, then, at Cisco’s discretion, Cisco may withhold support under warranty or a Cisco support program. In the course of providing support for a Cisco networking product Cisco might require that the end user install Cisco transceivers if Cisco determines that removing third-party parts will assist Cisco in diagnosing the cause of a support issue. Recommended Action: None.