显示标签为“Cisco SFP”的博文。显示所有博文
显示标签为“Cisco SFP”的博文。显示所有博文

2015年1月13日星期二

Analyze the Quality of Compatible SFP Optical Transceiver Module


Currently, more and more kinds of fiber optical transceiver module we need for telecommunication networks, requirements are likewise increasing. In order to meet the instant increasing demands of the system, optical module is towards standardization, miniaturization, intelligent development.
SFP transceiver module, which uses digital diagnostic function dell sfp transceivers 1000 sx , it is the manufacturers technical upgrading of iconic products, but the problem is coming, how to choose the SFP optical module? According to the communications research and development department assistant Daniel who has more than 20 years of research experiences conclusions: the strong compatibility of optical module does not represent the quality of the module is better. In order to attract customers' eyes, some manufactures on the network put too much emphasis on how strong the compatibility of optical module, it can compatible with so much famous brands such as cisco sfp h10gb cu1m , Huawei sfp, Finisar sfp?and others, even they launch the perfect optical module who has much functions and strong compatibility, high stability and low cost. Maybe these gimmicks look perfect, but in fact it is a great misunderstanding, because it is a set of contradictory combinations, Multi functional, the price will be relatively high, strong compatibility whom stability will be subject to a certain extent.
For example, universal socket compatible with two flat feet, three feet horizontal, round feet and others, because of its extreme versatility, it is used widely by people. The contact area between the universal hole socket splicing and electrical plug and cause the accident easily by making contact piece is overheating. In June 1, 2010, the new national standard by the State Administration of Quality Supervision and the National Standardization Management Committee jointly issued began to enforce, banned the production of universal hole outlet. Banning the production a few years later is still selling today, 70% of people, including businessmen do not even know already prohibited.
But how to strike a balance between compatibility and good quality? Daniel says, the most important thing of the sfp+ direct attached twinax copper ? is its stability and reliability, the compatibility just for reducing the factory and equipment manufactures'cost, but not both focus on. If you all focus on the compatibility, which inevitably occur SFP optical modules in the course of temperature anomalies, signal loss, signal flashes and other issues, and then affect the normal effect of end users, even damage to the benefits and reputation of equipments manufactures. Related product:?10gbase sr sfp module
transceiver


Finally maybe there are many people become confused and they do not know where to but these compatible transceiver module, well, Fiberstore will be your choice, it produced compatible transceiver module for many years and all through repeated test, there are few customers reflect the problem, ?it is safe to buy?from Fiberstore.

2014年12月31日星期三

SFP Transceiver Module Troubleshooting


SFP transceiver 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 sfp h10gb cu1m  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%  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 qsfp 4x10g aoc7m  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.