Verifying Dialer Interface Configuration

Purpose

Verify that the dialer interface is correctly configured.

Action

From the CLI, enter the show interfaces extensive command.

Sample Output

user@host> show interfaces dl0 extensive

Physical interface: dl0, Enabled, Physical link is Up
  Interface index: 128, SNMP ifIndex: 24, Generation: 129
  Type: 27, Link-level type: PPP, MTU: 1504, Clocking: Unspecified, Speed: Unspecified
  Device flags   : Present Running
  Interface flags: SNMP-Traps
  Link type      : Full-Duplex
  Link flags     : Keepalives
  Physical info  : Unspecified
  Hold-times     : Up 0 ms, Down 0 ms
  Current address: Unspecified, Hardware address: Unspecified
  Alternate link address: Unspecified
  Last flapped   : Never
  Statistics last cleared: Never
  Traffic statistics:
   Input  bytes  :                13859                    0 bps
   Output bytes  :                    0                    0 bps
   Input  packets:                  317                    0 pps
   Output packets:                    0                    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

  Logical interface dl0.0 (Index 70) (SNMP ifIndex 75) (Generation 146)
    Description: USB-modem-remote-management
    Flags: Point-To-Point SNMP-Traps 0x4000 LinkAddress 23-0 Encapsulation: PPP
    Dialer:  
      State: Active, Dial pool: usb-modem-dialer-pool
      Dial strings: 220
      Subordinate interfaces: umd0 (Index 64)
      Activation delay: 0, Deactivation delay: 0
      Initial route check delay: 120
      Redial delay: 3
      Callback wait period: 5
      Load threshold: 0, Load interval: 60
    Bandwidth: 115200
    Traffic statistics:
     Input  bytes  :                24839
     Output bytes  :                17792
     Input  packets:                  489
     Output packets:                  340
    Local statistics:
     Input  bytes  :                10980
     Output bytes  :                17792
     Input  packets:                  172
     Output packets:                  340
    Transit statistics:
     Input  bytes  :                13859                    0 bps
     Output bytes  :                    0                    0 bps
     Input  packets:                  317                    0 pps
     Output packets:                    0                    0 pps
  LCP state: Opened 
  NCP state: inet: Opened, inet6: Not-configured, iso: Not-configured, 
mpls: Not-configured
  CHAP state: Success
    Protocol inet, MTU: 1500, Generation: 136, Route table: 0
      Flags: None   
      Addresses, Flags: Is-Preferred Is-Primary
        Destination: 172.20.10.1, Local: 172.20.10.2, Broadcast: Unspecified, 
Generation: 134

Meaning

The output shows a summary of dialer 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 a problem with the interface module, interface port, or physical connection (link-layer errors).
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 possible 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.
The dialer state is Active when a USB modem call is in progress.
The LCP state is Opened when a USB modem call is in progress. An LCP state of Closed or Not Configured indicates a problem with the dialer configuration that needs to be debugged with the monitor traffic interface interface-name command. For information about the monitor traffic command, see Using the monitor traffic Command.

Verifying Dialer Interface Configuration

Purpose

Action

Sample Output

Meaning

Related Topics