This is all done in GNS3 and it got me stumped so any helps is appreciated.
I am trying to advertize only certain routes (220.127.116.11/20) from R1 to ISP via ip community-list but for some reason ISP is not seeing 18.104.22.168/20 the route.
R1 and R2 are in the same AS and are directly connected.
22.214.171.124/20 is generated on R1 via aggregate address and tagged by community 300:61100, and then passed down to R2.
R2 sees the 126.96.36.199/20 route as well as its community as you can see from the output:
R2#show ip bgp 188.8.131.52/20
BGP routing table entry for 184.108.40.206/20, version 9
Paths: (1 available, best #1, table Default-IP-Routing-Table)
Not advertised to any peer
Local, (aggregated by 20115 220.127.116.11)
18.104.22.168 (metric 3550) from 22.214.171.124 (126.96.36.199)
Origin IGP, metric 0, localpref 100, valid, internal, atomic-aggregate, best
But for some reason it won’t pass it to ISP.
On R2 I have following config:
router bgp 20
neighbor 188.8.131.52 activate
neighbor 184.108.40.206 send-community
neighbor 220.127.116.11 route-map L3-TEST out
ip community-list standard REGIONAL-AGGS permit 300:61100
route-map L3-TEST permit 10
match community REGIONAL-AGGS
Without the route-map ISP of course sees 18.104.22.168/20 (and everything else) because everything is allowed. But I just want to pass that specific route to the ISP router. What am I doing wrong with this route map?
Note: I do have send-community command on all routers.
Yeah I totally forgot about that. I fixed it now. What I did was I tagged the route with additional community since it has to be there anyway, because I will be using it again and again through out the topology.
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