Troubleshoot; Troubleshooting Common Issues; Bad Or Damaged Cable; Ethernet And Fiber-Optic Cables - Cisco Catalyst PON Series Hardware Installation Manual

Troubleshoot

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Troubleshooting Common Issues

The following section provide information about how to troubleshoot common issues in the Cisco Catalyst
PON Series Switches.

Bad or Damaged Cable

Always examine the cable for marginal damage or failure. A cable might appear physically good, but it could
corrupt packets as a result of subtle damage to the wiring or connectors. You can identify this situation because
of packet errors occurring at the port or the port constantly flapping.
Perform the following checks on the cable:
• Examine or exchange the copper or fiber-optic cable with a working cable.
• Look for broken or missing pins on cable connectors.
• Rule out any bad patch panel connections or media convertors between the source and the destination.
• Test the cable in another port or interface, if possible, to identify if the fault is with the cable.

Ethernet and Fiber-Optic Cables

Make sure that you have the correct cable for the connection:.
• For Ethernet, use Category 3 copper cable for 10 Mbps UTP connections. Use either Category 5, Category
• For fiber-optic cables, verify that you have the correct cable for distance and port type. Ensure that the
• For copper connections, determine if a crossover cable was used when a straight-through was required,
Troubleshooting Common Issues, on page 55
Cisco Catalyst PON Series OLT Troubleshooting, on page 56
Cisco Catalyst PON Series ONT Troubleshooting, on page 58
If possible, bypass the patch panel, or eliminate faulty media convertors (fiber-optic-to-copper).
5e, or Category 6 UTP for 10/100/1000 Mbps connections.
connected device ports match and use the same type of encoding, optical frequency, and fiber type.
or the reverse. Enable auto-MDIX on the device, or replace the cable.
C H A P T E R
Cisco Catalyst PON Series Switches Hardware Installation Guide
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