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Old 10-01-2012, 03:13 AM
bhargavas bhargavas is offline
Join Date: Feb 2012
Posts: 5
bhargavas has 10 reputation points

Hello There,

Internal loopback test fail shows hardware issue. So as to proceed, you can try performing Internal and External Loop back test.

or if possible can you perform the loopback test:
Internal loopback test:
The purpose of the internal loopback test is to verify that the stack ports are functional in each switch. For accurate results, the internal loopback test must be run before the external loopback test. The stack loopback tests can only be performed on a standalone unit with no traffic running on the unit.

To run the test, first use the “stack-loopback test internal “command.

External Loopback test:
This performs the external loopback test by connecting the stack uplink port with the stack downlink port, sending a packet from the uplink port, and verifying that the packet is received on the downlink port.
To run the test, first use the “stack loopback-test external “command.

NOTE: Always run the internal test first. Because the cable tests are not conclusive until you ensure the stack ports work correctly.

If even after performing the internal and external loopback test you face issue, I suggest you to open an SR with AVAYA Support to move further with Replacement/troubleshooting.

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