IP Routing Policy 127
Troubleshooting Routing
Protocols
Routing information filtering cannot be implemented in normal operation of the
routing protocol
Check for the following faults:
â– 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.
â– 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, no 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).
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