Nokia EM7500 Installation Manual page 105

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Troubleshooting Routing Problems
For more information about how to use the tcpdump command, see the Nokia
Network Voyager Reference Guide.
Under routing options in Network Voyager, you can also enable several types
of trace options for OSPF. These traces are logged in .
/var/tmp/ipsrd.log
For information about how to access Network Voyager and the related
reference materials, see "Using Nokia Network Voyager" on page 45.
Problem OSPF is not configured.
Solution Verify that OSPF is properly configured for all interfaces that are
involved in OSPF routing. For more information, see Configuring OSPF from
the Configuring Routing document page in Network Voyager. You can access
the document page by pressing Doc.
Problem OSPF hello and dead timers are not the same on each interface for
a given link.
Solution Verify that the settings at the end of each link are identical.
Problem Attached devices do not support OSPF.
Solution Ensure that the attached the appliance supports OSPF. If the
attached appliance does not support OSPF, configure it with a protocol that
the appliance supports and exchange routes with OSPF, or set a default or
static route.
Note
You can also use ICLID to display OSPF details.
Common Problems with RIP
Use tcpdump to view routing information. Use the following command to
display routing updates for a specific interface:
tcpdump -i interface proto rip
IP390, 105i & 105s Security Platform Installation Guide 105