Verifying the VoIP Interface

Purpose

Verify that the VoIP interface is correctly configured.

Action

From the CLI, enter the show interfaces extensive command.

Sample Output

user@host> show interfaces vp-3/0/0
extensive

Physical interface: vp-3/0/0, Enabled, Physical link is Up
  Interface index: 141, SNMP ifIndex: 21, Generation: 142
  Type: VP-AV, Link-level type: VP-AV, MTU: 1518, Speed: 10mbps
  Device flags   : Present Running
  Link type      : Full-Duplex
  Link flags     : None
  Physical info  : Unspecified
  CoS queues     : 8 supported, 8 maximum usable queues
  Last flapped   : 2006-09-29 09:28:32 UTC (4d 18:35 ago)
  Statistics last cleared: Never
  Traffic statistics:
   Input  bytes  :              8886912                    0 bps
   Output bytes  :              6624354                    0 bps
   Input  packets:                90760                    0 pps
   Output packets:                65099                    0 pps
  Input errors:
    Errors: 0, Drops: 0, Framing errors: 0, Runts: 0, Giants: 0, Policed discards: 0, 
Resource errors: 0
  Output errors:
    Carrier transitions: 0, Errors: 0, Drops: 0, MTU errors: 0, Resource errors: 0
  Egress queues: 8 supported, 8 in use
  Queue counters:       Queued packets  Transmitted packets      Dropped packets
    0 best-effort                65099                65099                    0
    1 expedited-fo                   0                    0                    0
    2 assured-forw                   0                    0                    0
    3 network-cont                   0                    0                    0
  Packet Forwarding Engine configuration:
    Destination slot: 2
    CoS transmit queue               Bandwidth               Buffer Priority   Limit
                              %            bps     %           usec
    0 best-effort            95        9500000    95              0      low    none
    3 network-control         5         500000     5              0      low    none
                    
  Logical interface vp-3/0/0.0 (Index 71) (SNMP ifIndex 47) (Generation 137)
    Flags: Point-To-Point SNMP-Traps Encapsulation: VP-AV
    Protocol inet, MTU: 1500, Generation: 142, Route table: 0
      Flags: None   
      Filters: Input: pcap, Output: pcap
      Addresses, Flags: Is-Preferred Is-Primary
        Destination: 10.10.10.2, Local: 10.10.10.1, Broadcast: Unspecified, 
Generation: 144

Meaning

The output shows a summary of interface information. Verify the following information:

The physical interface is Enabled. If the interface is shown as Disabled, do either of the following:
- In the CLI configuration editor, delete the disable statement at the [edit interfaces interface-name] level of the configuration hierarchy.
- In the J-Web configuration editor, clear the Disable check box on the Interfaces>interface-name page.
The physical link is Up. A link state of Down indicates that the interface is disabled. Do one of the following:
- In the CLI configuration editor, delete the disable statement at the [edit interfaces interface-name] level of the configuration hierarchy.
- In the J-Web configuration editor, clear the Disable check box on the Interfaces>interface-name page.
The Last Flapped time is an expected value. The Last Flapped time indicates the last time the physical interface became unavailable and then available again. Unexpected flapping indicates likely link-layer errors.
The traffic statistics reflect expected input and output rates. Verify that the number of inbound and outbound bytes and packets matches expected throughput for the physical interface. To clear the statistics and see only new changes, use the clear interfaces statistics interface-name command.

Verifying the VoIP Interface

Purpose

Action

Sample Output

Meaning

Related Topics