Keeping Statistics on Routing Table Changes
Problem
You want to keep statistics on how stable your routing table is.
Solution
IOS Version 12.0 introduced a seldom-used feature that allows you to statistically monitor fluctuations in your routing tables:
Router#configure terminal
Enter configuration commands, one per line. End with CNTL/Z. Router(config)#ip route profile
Router(config)#end
Router#
Once this command is enabled, you can check the stability of your network:
Router#show ip route profile
IP routing table change statistics:
Frequency of changes in a 5 second sampling interval
-------------------------------------------------------------
Change/ Fwd-path Prefix Nexthop Pathcount Prefix
interval change add change change refresh
-------------------------------------------------------------
0 327 327 335 335 331
1 4 4 0 0 1
2 2 2 0 0 1
3 0 0 0 0 0
4 1 1 0 0 1
5 1 1 0 0 1
10 0 0 0 0 0
15 0 0 0 0 0
20 0 0 0 0 0
25 0 0 0 0 0
30 0 0 0 0 0
55 0 0 0 0 0
80 0 0 0 0 0
105 0 0 0 0 0
130 0 0 0 0 0
155 0 0 0 0 0
280 0 0 0 0 0
405 0 0 0 0 0
530 0 0 0 0 0
655 0 0 0 0 0
780 0 0 0 0 0
1405 0 0 0 0 0
2030 0 0 0 0 0
2655 0 0 0 0 0
3280 0 0 0 0 0
3905 0 0 0 0 0
7030 0 0 0 0 0
10155 0 0 0 0 0
13280 0 0 0 0 0
Overflow 0 0 0 0 0
Router#
Discussion
It is often extremely difficult to tell when there are stability problems in your network. This command doesn’t tell you much about what the problems are, but it can at least tell you how serious the problems are. However, to be useful, you must check these ...
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