how to make a reflexive access-list work for router traffic
I have three rtrs like rtrA<>rtrB<>rtrC. I want to use a reflexive access list on B between A<>B. I build it as an external list like:
ip access-group inbound in
ip access-group outbound out
ip access-list ext inbound
ip access-list ext outbound
permit tcp any any eq bgp reflect reflst1
permit icmp any any reflect reflst1
The bgp connection never comes up (works without the list) and pings dont work. If I hard code routes to each other in A and C pings work from C to A and B has an entry in reflst1 for the two addresses talking to each other.
If I ping from B to A debug shows traffic going out but responses get denied because the reflexive entry is not created.
I tried policy routing and IP local policy but that is building the reflexive entry from input not output.
Whats the trick for making reflexive entries from traffic generated by the router?
Re: how to make a reflexive access-list work for router traffic
Generally access-lists are not effective for packets generated by the router. I guess that is the reason you are encountering this problem. On the inbound direction, you can configure regular ACL commands that permit what you want apart from the 'evaluate' command to allow traffic that is not permitted by the reflexive ACL.
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