Nokia IP380 Installation Guide - Page 116

Common Problems with RIP, Common Problems Exchanging Routes

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9 Troubleshooting 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 "Accessing Nokia Network Voyager" on page 30. 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. For information about how to access Network Voyager and the related reference materials, see "Accessing Nokia Network Voyager" on page 30. 108 Nokia IP300 Series Security Platform Installation Guide

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9
Troubleshooting
108
Nokia IP300 Series Security Platform Installation Guide
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
“Accessing Nokia Network Voyager”
on page 30.
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.
For information about how to access Network Voyager and the related
reference materials, see
“Accessing Nokia Network Voyager”
on page 30.