bgp default-route-advertise with policy apply community

Created Oct 25, 2017 06:23:10Latest reply Mar 22, 2018 22:46:51 2397 4 0 0
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This post was last edited by xxiii at 2017-10-25 06:25. In BGP, I need to attach a community and a local preference to the route advertised by the default-route-advertise command. However, it appears that apply commands in the policy are ignored in this case, is this correct?

peer x default-route-advertise route-policy xpol

route-policy ibgp.ipv4-orig-dflt permit node 30000
  description do we have DIRECT connectivity to the inet?
  if-match ip-prefix tran
  apply local-preference 10
  apply community 65000:1

When the 0.0.0.0/0 route is received at peer x however, it does not have the local preference or the community attached to it.
  • x
  • convention:

StarOfWest  Moderator   Created Mar 22, 2018 22:46:51 Helpful(0) Helpful(0)

In your example the route-policy configured and the route policy which was applied is different, so definitely it will not work.
  • x
  • convention:

“We only get answers to the questions that we ask.” physicist Werner Heisenberg
WoodWood  Admin   Created Oct 25, 2017 09:36:12 Helpful(0) Helpful(0)

waiting for help
  • x
  • convention:

Best answer

Busy_with_lazy_mind  Moderator   Created Oct 27, 2017 09:18:00 Helpful(0) Helpful(0)

what's the ip prefix tran.
"if-match ip-prefix tran" is a rule check , if match this, the actions below would be executed.
you can try to modify the ip-prefix tran to 0.0.0.0/0 or just delete if-match judgement command.
  • x
  • convention:

Best answer

XxIII     Created Nov 07, 2017 00:05:53 Helpful(0) Helpful(0)

Well, that's what seems like should happen, but in actual practice, it is originating a default but without a local preference of 10, or community 65000:1.

tran is an ip-prefix list of some IP addresses, at least one of which should be present, before this router orginiates a default to the peer in question.
  • x
  • convention:

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