Hello community, I have been struggling with a nice IPv6 BGP problem.
I am using my route reflectors (CER-RT, v5.3.0b) to generate the BGP prefixes we will be announcing to our upstreams via our edge routers (MLXe-4, v5.3.0b). The configuration works just fine for IPv4, but for some reason, my BGP communities are not propagated when using the same model under IPv6 AFI. Some outputs : - I can see that the RR is generating the prefixe, annoucing it to the ER and taging it with the right BGP community : [email protected]#sh ipv6 bgp routes detail Total number of BGP Routes: 1 Status A:AGGREGATE B:BEST b:NOT-INSTALLED-BEST C:CONFED_EBGP D:DAMPED E:EBGP H:HISTORY I:IBGP L:LOCAL M:MULTIPATH m:NOT-INSTALLED-MULTIPATH S:SUPPRESSED F:FILTERED s:STALE 1 Prefix: 2a00:bf40::/32, Status: BL, Age: 0h4m29s NEXT_HOP: 100::1, Learned from Peer: Local Router LOCAL_PREF: 100, MED: 1, ORIGIN: igp, Weight: 32768 AS_PATH: *COMMUNITIES: 57928:106* Adj_RIB_out count: 3, Admin distance 1 Tag: 0x0000006a - The ER receives the BGP announcement and installs in its RIB. But for some reason, BGP community has disappeared along the way : er01.par01#sh ipv6 bgp routes detail Total number of BGP Routes: 1 Status A:AGGREGATE B:BEST b:NOT-INSTALLED-BEST C:CONFED_EBGP D:DAMPED E:EBGP H:HISTORY I:IBGP L:LOCAL M:MULTIPATH m:NOT-INSTALLED-MULTIPATH S:SUPPRESSED F:FILTERED s:STALE 1 Prefix: 2a00:bf40::/32, Status: BI, Age: 0h2m11s NEXT_HOP: 100::1, Metric: 1, Learned from Peer: 2a00:bf40::1 (57928) LOCAL_PREF: 100, MED: 1, ORIGIN: igp, Weight: 0 *AS_PATH:* - I, of course, have activated the propagation of BGP communities under the RR's BGP configuration (showing only what's relevant) : router bgp .... neighbor ER-PEER-V6 peer-group neighbor ER-PEER-V6 remote-as 57928 neighbor ER-PEER-V6 description EDGE-ROUTERS-PEERS-V6 neighbor ER-PEER-V6 update-source loopback 1 neighbor ER-PEER-V6 soft-reconfiguration inbound .... neighbor 2a00:bf40::XYZ peer-group ER-PEER-V6 neighbor 2a00:bf40::XYZ peer-group ER-PEER-V6 .... address-family ipv6 unicast redistribute static route-map FROM-STATIC-V6-TO-BGP * neighbor RR-PEER-V6 send-community* neighbor 2a00:bf40::XYZ activate neighbor 2a00:bf40::XYZ activate exit-address-family No filters, ACLs or route-maps of any kind. Any ideas ? Best regards. Y. -- Youssef BENGELLOUN-ZAHR
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