Chapter 6: Troubleshooting a physical
media problem
Troubleshooting cable connections
This section details the steps used to troubleshoot cable connections.
To troubleshoot cable connections, you can:
•
Check the cable - Use another cable
• Check the source - Try another source
• Verify the port on the Avaya Secure Router 2330/4134 is functioning
Loopback testing
Perform loopback tests to troubleshoot a circuit. For example, use a loopback test on a port
to verify that the port is functioning.
When you use loopback testing to verify the circuit function, you may need to enable BERT
simultaneously.
Procedure steps
To access loopback test commands, enter:
test {t1|e1|t3|ct3|serial|hssi} <slot/port>
Loopback testing for T1 interfaces
Use the commands in this section to run loopback tests on a T1 interface.
Procedure steps
1.
To access loopback testing commands, enter:
Troubleshooting August 2013 57
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