Step 1: Display the Status of T1 Interfaces
Action
To display the status of T1 interfaces, use the following JUNOS command-line interface (CLI) operational mode command:
user@host> show interfaces terse t1*
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
What It Means
This sample output shows the status of both the physical and logical interfaces. See Table 7 for a description of what the output means.
Table 7: Status of T1 Interfaces
|
|
|
|---|
t1-1/0/0
Admin Down
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
|
t1-1/012.0
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.
|
fe-1/0/3
Admin Up
Link Down
|
|
The physical interfaces is added to the configuration, but the logical link is not configured.
|