Display the Status of T1 Interfaces
Purpose
To display the status of T1 interfaces.
Action
Use the following Junos OS command-line interface (CLI) operational mode command to display the status of T1 interfaces:
Sample Output
user@host> show interfaces terse t1*Interface Admin Link Proto Local Remote t1-1/0/0 down up --- administratively disabled t1-1/0/0.0 up down inet 1.1.1.1/30 t1-1/0/1 up down --- physical layer down t1-1/0/1.0 up down inet 2.2.2.2/30 --- link layer down t1-1/0/2 up up t1-1/0/2.0 up up inet 3.3.3.3/30 --- link layer up t1-1/0/3 up down
Meaning
This sample output shows the status of both the physical and logical interfaces. See Table 1 for a description of what the output means.
Table 1: Status of T1 Interfaces
Physical Interface | Logical Interface | Status Description |
|---|---|---|
t1-1/0/0 AdminDown Link Up | t1-1/0/0.0 Admin Up Link Down | This interface is administratively disabled and the physical link is healthy (Link Up), but the logical interface is not established. The logical interface is administratively enabled (Admin Up), but is down because the physical link is disabled. |
t1-1/0/1 Admin Up Link Down | t1-1/0/1.0 Admin Up Link Down | This interface is not functioning between the local router and the remote router because both the physical and logical links are down (Link Down). The interface is not administratively disabled because both the physical and logical links are up (Admin Up). |
t1-1/0/2 Admin Up Link Up | t1-1/0/2.0 Admin Up Link Up | This interface has both the physical and logical links up and running. |
t1-1/0/3 Admin Up Link Down | The physical interfaces is added to the configuration, but the logical link is not configured. |
