Step 2: Display the Status of a Specific Channelized OC-12 Interface

Action

To display the status of specific Channelized OC-12 interface, use the following JUNOS CLI operational mode command:

user@host> show interfaces terse t3-fpc/pic/port:channel

Sample Output

user@host> show interfaces terse t3-0/3/0:0    

Interface               Admin Link Proto Local                 Remote

t3-0/3/0:0              up    up 

user@host> show interfaces terse t3-0/3/0:11   

Interface               Admin Link Proto Local                 Remote

t3-0/3/0:11             up    down

What It Means.

The first line of the output shows the status of the link. If this line shows that the physical link is up, the physical link is healthy and can pass packets. If this line shows that the physical link is down, the physical link is unhealthy and cannot pass packets.

When only one or some individual T3 channels are down, you must troubleshoot the T3 channel by checking the configuration, transmission network, and equipment. If all of the physical layers for the T3 channels are down, you must work with this as an OC-12 SONET link or PIC problem. For more information on monitoring SONET interfaces, see Monitor Channelized OC-12 Interfaces.