Display the Status of Fast Ethernet Interfaces
Purpose
To display the status of Fast Ethernet interfaces, use the following Junos OS command-line interface (CLI) operational mode command:
Action
Sample Output
user@host> show interfaces terse fe* Interface Admin Link Proto Local Remote fe-2/1/0 up up fe-2/1/0.0 up up inet 10.116.115.217/29 fe-3/0/2 up down fe-3/0/2.0 up down fe-3/0/3 up up fe-3/0/3.0 up up inet 192.168.223.65/30 fe-4/1/0 down up fe-4/1/0.0 up down inet 10.150.59.133/30 fe-4/1/1 up up fe-4/1/1.0 up up inet 10.150.59.129/30 fe-4/1/2 up down fe-4/1/2.0 up down
Meaning
The sample output lists only the Fast Ethernet interfaces. It shows the status of both the physical and logical interfaces. For a description of what the output means, see Table 1.
Table 1: Status of Fast Ethernet Interfaces
Physical Interface | Logical Interface | Status Description |
|---|---|---|
fe-2/1/0 Admin Up Link Up | fe-2/1/0.0 Admin Up Link Up | This interface has both the physical and logical links up and running. |
fe-3/0/2 Admin Up Link Down | fe-3/0/2.0 Admin Up Link Down | This interface has the physical link down, the link layer down, or both down (Link Down). The logical link is also down as a result. |
fe-4/1/0 Admin Down Link Up | fe-4/1/0.0 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 down because the physical link is disabled. |
fe-4/1/2 Admin Up Link Down | fe-4/1/2.0 Admin Up Link Down | This interface has both the physical and logical links down. |
