To further evaluate on that topic: The rule for a IBGP community is: IBGP learned routes are not allowed to forward to other IBGP neighbors
The IBGP rules for an RR are: IBGP learned routes from a nonclient are allowed to be forwarded to all clients only IBGP learned routes from a client are allowed to be forwarded to all IBGP neighbors ( clients and nonclients) --- so in most case it does not really matter if C or D is client or not ---- if you assume a nonclient then for those you need full IBGP-mesh to other nonclients and all RRs ----if in reality it is a client then you simply forward routes to some neighbors twice ( one direct one via RR) Regards alexander -----Ursprüngliche Nachricht----- Von: juniper-nsp [mailto:[email protected]] Im Auftrag von Alexander Marhold Gesendet: Mittwoch, 30. Mai 2018 08:17 An: 'Victor Sudakov'; [email protected] Betreff: Re: [j-nsp] router reflector clients and non-clients If you set the cluster-id for a group all configured neighbors are RR-clients So in your example all 4 neighbors including D and E are clients. However the RR concept is quite flexible, a RR itself can be a client of another RR ( hierarchically or at peer level) Which means A can be the RR of D and the same time D can be the RR of A Regards Alexander Marhold -----Ursprüngliche Nachricht----- Von: juniper-nsp [mailto:[email protected]] Im Auftrag von Victor Sudakov Gesendet: Mittwoch, 30. Mai 2018 07:59 An: [email protected] Betreff: [j-nsp] router reflector clients and non-clients Dear Colleagues, I'm reading https://www.juniper.net/documentation/en_US/junos/topics/topic-map/bgp-route -reflectors.html and it is completely mind-boggling. The example configuration of the Router Reflector (RR) places all neighbors (both clients and non-clients) into one group "internal-peers." How is this supposed to work? How do I tell the RR that routers B and C are clients, and routers E and D are non-clients? In Cisco, you set the "router-reflector-client" statement for each peer (or peer-group) who is a RR-client, explicitly. I don't see anything of the kind in the example from the Juniper site. Please help? Quoting from the document: user@A# show protocols bgp { group internal-peers { type internal; local-address 192.168.6.5; export send-ospf; cluster 192.168.6.5; neighbor 192.163.6.4; # client, router B neighbor 192.168.40.4; # client, router C neighbor 192.168.0.1; # non-client, router D neighbor 192.168.5.5; # non-client, router E } } -- Victor Sudakov, VAS4-RIPE, VAS47-RIPN AS43859 _______________________________________________ juniper-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/juniper-nsp _______________________________________________ juniper-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/juniper-nsp _______________________________________________ juniper-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/juniper-nsp
