Nokia IP390 - Security Appliance, Installation Manual

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7
Troubleshooting
84 IP390 Security Platform Installation Guide
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 IP390 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
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
routing information protocol (RIP). 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 33.
Problem Inconsistent subnet mask (netmask does not match the class of IP address for RIP
v1).
Solution RIP version 1 must use consistent subnet masks; change to RIP version 2 or OSPF
to use inconsistent subnet masks.
Problem Number of networks exceeds the RIP limit.
Solution
RIP can span up to 16 networks. Verify that your network topology does not exceed
this limit.
Common Problems Exchanging Routes
Always enter a metric value if you are exporting routes from OSPF to RIP.
Problem
Exchanging routes are not configured correctly.
Solution Exchanging routes involves several configuration steps. Follow the tasks in the
Nokia Network Voyager Reference Guide (online documentation) to ensure that you follow all
steps.