3Com 3C13636 Configuration Manual page 730

3Com Router 3000 Ethernet Family
Configuration Guide
Troubleshooting:
Check the following requirements:
The if-match mode of at least one node of the route-policy should be the permit
mode. When a route-policy is used for the routing information filtering, if a piece of
routing information does not pass the filtering of any node, then it means that the
route information does not pass the filtering of the route-policy. When all the nodes
of the route-policy are in the deny mode, then all the routing information cannot
pass the filtering of the route-policy.
The if-match mode of at least one list item of the ip-prefix should be the permit
mode. The list items of the deny mode can be firstly defined to rapidly filter the
routing information not satisfying the requirement, but if all the items are in the
deny mode, any routes will not pass the ip-prefix filtering. You can define an item
of "permit 0.0.0.0/0 less-equal 32" after the multiple list items in the deny mode so
as to let all the other routes pass the filtering (If less-equal 32 is not specified, only
the default route will be matched).
Chapter 7 IP Routing Policy Configuration
3Com Corporation
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