Step 1: Display the Status of Channelized OC-12 Interfaces

Action

To display the status of Channelized OC-12 interfaces, use the following JUNOS command-line interface (CLI) operational mode command:

user@host> show interfaces terse t3-interface-name*

Sample Output 1

The following sample output is for a Channelized OC-12 interface:

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

Interface               Admin Link Proto Local                 Remote

t3-0/3/0:0              up    up  

t3-0/3/0:1              up    up  

t3-0/3/0:2              up    up  

t3-0/3/0:3              up    up  

t3-0/3/0:4              up    up  

t3-0/3/0:5              up    up  

t3-0/3/0:6              up    up  

t3-0/3/0:7              up    up  

t3-0/3/0:8              up    up  

t3-0/3/0:9              up    up  

t3-0/3/0:10             up    up  

t3-0/3/0:11             up    down

What It Means

The sample output shows the status of both the physical and logical interfaces. In this example, all of the Channelized OC-12 interfaces are up except the channel interface t3-0/3/0:11.

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 a T3 or OC-12 SONET link, or a Physical Interface Card (PIC) problem. For more information on monitoring SONET interfaces, see Monitor Channelized OC-12 Interfaces.