Diagnose a Suspected Hardware Problem with a T1 Interface

Problem

Take the following steps to verify if there is a hardware problem with a T1 interface.

Solution

To diagnose a suspected hardware problem with a T1 interface, follow these steps:

1. Create a Loopback
2. Set Clocking to Internal
3. Verify That the T1 Interface Is Up
4. Clear T1 Interface Statistics
5. Force the Link Layer To Stay Up
6. Verify the Status of the Logical Interface
7. Ping the T1 Interface
8. Check for T1 Interface Error Statistics