Step 1: Display the Status of Fast Ethernet and Gigabit Ethernet Interfaces

Action

To display the status of Fast Ethernet or Gigabit Ethernet interfaces, use the following JUNOS command-line interface (CLI) operational mode command:

user@host> show interfaces terse (fe* | ge*)

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

What It Means

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 37.

Table 37: 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 (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.

Sample Output

user@host> show interfaces terse ge* 

Interface       Admin Link Proto Local                 Remote

ge-2/2/0        down  down

ge-2/2/0.0      up    down inet  65.113.23.105/30

ge-2/3/0        up    up

ge-2/3/0.0      up    up   inet  65.115.56.57/30

ge-3/1/0        up    up

ge-3/1/0.0      up    up   inet  65.115.56.193/30

ge-3/2/0        up    down

What It Means

This sample output lists only the Gigabit Ethernet interfaces. It shows the status of both the physical and logical interfaces. See Table 38 for a description of what the output means.

Table 38: Status of Gigabit Ethernet Interfaces

Physical Interface	Logical Interface	Status Description
ge-2/2/0 Admin Down Link Down	ge-2/2/0.0 Admin Up Link Down	This interface is administratively disabled (Admin Down). Both the physical and logical links are down (Link Down).
ge-2/3/0 Admin Up Link Up	ge-2/3/0.0 Admin Up Link Up	This interface has both the physical and logical links up and running.
ge-3/2/0 Admin Up Link Down	ge-3/2/0.0 Admin Up Link Down	This interface has both the physical link and the logical interface down.