Step 5: Monitor Statistics for a Channelized OC-12 IQ Interface

Action

To monitor statistics for a Channelized OC-12 interface, use the following JUNOS CLI operational mode command:

user@host> monitor interfaces interface-type-fpc/pic/port:channel 

Sample Output

user@host> monitor interfaces so-0/0/0:1.0 

host                                 Seconds: 10                  Time: 00:23:13

                                                              Delay: 0/0/32

Interface: so-0/0/0:1.0, Enabled, Link is Up

Flags: Point-To-Point SNMP-Traps

Encapsulation: PPP

Local statistics:                                             Current delta

  Input bytes:                     431244                               [0]

  Output bytes:                    432268                               [0]

  Input packets:                    35933                               [0]

  Output packets:                   36019                               [0]

Remote statistics:

  Input bytes:                          0 (0 bps)                       [0]

  Output bytes:                         0 (0 bps)                       [0]

  Input packets:                        0 (1 pps)                       [0]

  Output packets:                       0 (0 pps)                       [0]

Traffic statistics:

  Input bytes:                     431244                               [0]

  Output bytes:                    432268                               [0]

  Input packets:                    35933                               [0]

  Output packets:                   36019                               [0]

Protocol: inet, MTU: 4470

user@host> monitor interfaces t1-0/0/0:2:1.0 

host                                 Seconds: 1                   Time: 00:32:07

                                                              Delay: 0/0/26

Interface: t1-0/0/0:2:1.0, Enabled, Link is Up

Flags: Point-To-Point SNMP-Traps

Encapsulation: PPP

Local statistics:                                             Current delta

  Input bytes:                     432028                               [0]

  Output bytes:                    433076                               [0]

  Input packets:                    35954                               [0]

  Output packets:                   36041                               [0]

Remote statistics:

  Input bytes:                          0 (0 bps)                       [0]

  Output bytes:                         0 (0 bps)                       [0]

  Input packets:                        0 (0 pps)                       [0]

  Output packets:                       0 (0 pps)                       [0]

Traffic statistics:

  Input bytes:                     432028                               [0]

  Output bytes:                    433076                               [0]

  Input packets:                    35954                               [0]

  Output packets:                   36041                               [0]

Protocol: inet, MTU: 1500

user@host> monitor interfaces ds-0/0/0:4:1:1.0 

host                                 Seconds: 3                   Time: 00:36:59

                                                               Delay: 0/0/0

Interface: ds-0/0/0:4:1:1.0, Enabled, Link is Up

Flags: Point-To-Point SNMP-Traps

Encapsulation: PPP

Local statistics:                                             Current delta

  Input bytes:                     432836                               [0]

  Output bytes:                    433882                               [0]

  Input packets:                    36065                               [0]

  Output packets:                   36152                               [0]

Remote statistics:

  Input bytes:                          0 (0 bps)                       [0]

  Output bytes:                         0 (0 bps)                       [0]

  Input packets:                        0 (0 pps)                       [0]

  Output packets:                       0 (0 pps)                       [0]

Traffic statistics:

  Input bytes:                     432836                               [0]

  Output bytes:                    433882                               [0]

  Input packets:                    36065                               [0]

  Output packets:                   36152                               [0]

Protocol: inet, MTU: 1500

What It Means

The sample output shows common interface failures, indicates whether loopback is detected, and shows increases in framing errors. Use information from this command to help narrow down possible causes of an interface problem.

NOTE: If you are accessing the router from the console connection, make sure you set the CLI terminal type using the set cli terminal command.

CAUTION: We recommend that you use this command only for diagnostic purposes. Do not leave it on during normal router operations because real-time monitoring of traffic consumes additional CPU and memory resources.