Never mind. Found my problem - configuring “add-path”, in addition to configuring identifier, at both goBGP server and its bgp-peers worked.
Thanks, Bakul Khanna Viasat Inc. From: Khanna, Bakul Sent: Wednesday, April 10, 2019 4:21 PM To: gobgp-devel@lists.sourceforge.net Subject: Having issues with goBGP (2.1.0) export-policy for routes of the kind "same-prefix different-nexthop" Hello, I read up on the use of “identifier” in https://github.com/osrg/gobgp/issues/1615 and am trying to use it to advertise two routes of the kind “same-prefix different-nexthop” as follows - to two different bgp neighbors (10.0.0.1 and 10.0.0.2) based on community: I have added the following two routes via the goBGP CLI: 1.2.3.4/32 nexthop 10.1.1.10 community 100:100 identifier 1 1.2.3.4/32 nexthop 100.1.1.100 community 200:200 identifier 2 When I do a “./gobgp global rib” I see both routes: 1.2.3.4/32 nexthop 10.1.1.10 community 100:100 1.2.3.4/32 nexthop 100.1.1.100 community 200:200 When I do a “./gobgp n 10.0.0.1 adj-out” I see the route: 1.2.3.4/32 nexthop 10.1.1.10 community 100:100 When I do a “./gobgp n 10.0.0.2 adj-out” I see: Network not in table Why doesn’t the “1.2.3.4/32 nexthop 100.1.1.100 community 200:200” route get advertised over to the second bgp neighbor? Just to confirm that my community filtering is correctly configured. I delete the route “1.2.3.4/32 nexthop 10.1.1.10 community 100:100”. When I do a “./gobgp global rib” I see one route: 1.2.3.4/32 nexthop 100.1.1.100 community 200:200 When I do a “./gobgp n 10.0.0.1 adj-out” I see: Network not in table When I do a “./gobgp n 10.0.0.2 adj-out” I see: 1.2.3.4/32 nexthop 100.1.1.100 community 200:200 Why don’t both such routes – instead of just one - get advertised over the bgp neighbor based on community? My colleague also opened a I ticket on this topic https://github.com/osrg/gobgp/issues/2055. Any insight would be greatly appreciated. Thanks, Bakul Khanna Viasat Inc.
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