Diagnose a Suspected Hardware Problem with a T3 Interface

Purpose

When you suspect a hardware problem, take the following steps to help verify if there is a hardware problem.

Steps To Take

To diagnose a suspected hardware problem with a T3 interface, follow these steps:

1. Create a Loopback
2. Set Clocking to Internal
3. Verify That the T3 Interface Is Up
4. Clear T3 Interface Statistics
5. Force the Link Layer To Stay Up
6. Verify the Status of the Logical Interface
7. Ping the T3 Interface
8. Check for T3 Interface Error Statistics