Verifying OSPF-Enabled Interfaces

Purpose

Verify that OSPF is running on a particular interface and that the interface is in the desired area.

Action

From the CLI, enter the show ospf interface command.

Intf                State     Area            DR ID           BDR ID       Nbrs
at-5/1/0.0          PtToPt   0.0.0.0         0.0.0.0         0.0.0.0         1
ge-2/3/0.0          DR       0.0.0.0         192.168.4.16    192.168.4.15    1
lo0.0               DR       0.0.0.0         192.168.4.16    0.0.0.0         0
so-0/0/0.0          Down     0.0.0.0         0.0.0.0         0.0.0.0         0
so-6/0/1.0          PtToPt   0.0.0.0         0.0.0.0         0.0.0.0         1
so-6/0/2.0          Down     0.0.0.0         0.0.0.0         0.0.0.0         0
so-6/0/3.0          PtToPt   0.0.0.0         0.0.0.0         0.0.0.0         1

Meaning

The output shows a list of the Services Router interfaces that are configured for OSPF. Verify the following information:

• Each interface on which OSPF is enabled is listed.
• Under Area, each interface shows the area for which it was configured.
• Under Intf and State, the Services Router loopback (lo0.0) interface and LAN interface that are linked to the OSPF network's designated router (DR) are identified.
• Under DR ID, the IP address of the OSPF network's designated router appears.
• Under State, each interface shows a state of PtToPt to indicate a point-to-point connection. If the state is Waiting, check the output again after several seconds. A state of Down indicates a problem.
• The designated router addresses always show a state of DR.

Related Topics

For a complete description of show ospf interface output, see the JUNOS Routing Protocols and Policies Command Reference.