Step 5: Verify the Status of the Logical Interface

Action

To verify the status of the logical interface, use the following JUNOS CLI operational mode command:

user@host> show interfaces t1-fpc/pic/port:channel

Sample Output 1

user@host# show interfaces t1-2/1/0:20                         

Physical interface: t1-2/1/0:20, Enabled, Physical link is Up

  Interface index: 210, SNMP ifIndex: 173

  Link-level type: Cisco-HDLC, MTU: 1504, Clocking: Internal, Speed: T1, 
Loopback: Local, FCS: 16,

  Mode: C/Bit parity, Framing: ESF

  Device flags   : Present Running

  Interface flags: Point-To-Point SNMP-Traps

  Link flags     : Keepalives

  Keepalive settings: Interval 10 seconds, Up-count 1, Down-count 3

  Keepalive: Input: 39 (00:00:06 ago), Output: 0 (never)

  CoS queues     : 4 supported

  Last flapped   : 2004-05-20 21:46:27 UTC (00:14:28 ago)

  Input rate     : 16 bps (0 pps)

  Output rate    : 160 bps (0 pps)

  DS1   alarms   : None

  DS3   alarms   : None

  DS1   defects  : None

  DS3   defects  : None

  Logical interface t1-2/1/0:20.0 (Index 74) (SNMP ifIndex 213) 

    Flags: Point-To-Point SNMP-Traps Encapsulation: Cisco-HDLC

    Protocol inet, MTU: 1500

      Flags: None

      Addresses, Flags: Is-Preferred Is-Primary

        Destination: 10.10.1.1, Local: 10.10.1.2

What It Means

The sample output shows that the channelized interface has the physical and logical links up.