Remove BGP no-export community

[msizi.mthembu]

Hello,

I have a prefix that I learn from another AS1, which I set a "no-export" community inbound to AS2. AS2 has eBGP sessions to AS3 and AS4. I need to remove/override the "no-export" outbound to AS4 only. I tried the below policy but the prefix is still not being advertised out to AS4. Kindly advise

route-policy POLICY-OUT-1
  if destination in ADVERTISE-OUT then
    delete community in (no-export)
    pass
  else
    drop
  endif
end-policy
 

Thanks,

Msizi

[pman]

Hi,

maybe this will help you:

delete community in (internet, no-export, no-advertise, local- as, *:*)

https://www.cisco.com/c/en/us/td/docs/routers/asr9000/software/asr9k_r5-3/routing/command/reference/b-routing-cr53xasr9k/b-routing-cr53xasr9k_chapter_01010.html#wp1729919867

[Harold Ritter]

Hi @msizi.mthembu ,

Applying the route-policy outbound on the neighbor to AS3 and AS4 will not work. The updates will not be sent to these neighbors because they are tagged with no-export and would therefore never make it through the route-policy. If you have two routers in AS2 (connected via iBGP), you could apply the route-policy inbound on the second router. This would definitely work.

Regards,