Step 1: Display Real-Time Statistics about All Interfaces on the Router

Action

To display real-time statistics about traffic passing through all interfaces on the router, use the following JUNOS command-line interface (CLI) operational mode command:

user@host> monitor interface traffic

Sample Output

user@host> monitor interface traffic

host name                Seconds: 15                  Time: 12:31:09

Interface    Link  Input packets        (pps)     Output packets        (pps)

 so-1/0/0    Down              0          (0)                  0          (0)

 so-1/1/0    Down              0          (0)                  0          (0)

 so-1/1/1    Down              0          (0)                  0          (0)

 so-1/1/2    Down              0          (0)                  0          (0)

 so-1/1/3    Down              0          (0)                  0          (0)

 t3-1/2/0    Down              0          (0)                  0          (0)

 t3-1/2/1    Down              0          (0)                  0          (0)

 t3-1/2/2    Down              0          (0)                  0          (0)

 t3-1/2/3    Down              0          (0)                  0          (0)

 so-2/0/0      Up         211035          (1)              36778          (0)

 so-2/0/1      Up         192753          (1)              36782          (0)

 so-2/0/2      Up         211020          (1)              36779          (0)

 so-2/0/3      Up         211029          (1)              36776          (0)

 so-2/1/0      Up         189378          (1)              36349          (0)

 so-2/1/1    Down              0          (0)              18747          (0)

 so-2/1/2    Down              0          (0)              16078          (0)

 so-2/1/3      Up              0          (0)              80338          (0)

 at-2/3/0      Up              0          (0)                  0          (0)

 at-2/3/1    Down              0          (0)                  0          (0)

Bytes=b, Clear=c, Delta=d, Packets=p, Quit=q or ESC, Rate=r, Up=^U, Down=^D

What It Means

The sample output displays traffic data for active interfaces and the amount that each field has changed since the command started or since the counters were cleared by using the C key. In this example, the monitor interface command has been running for 15 seconds since the command was issued or since the counters last returned to zero.