18.09.2020 15:54, chiel wrote: > I'm currently using a 7606 (RSP720RSP-3CXL) and taking in full BGP on v4 and > v6. > Obviously it the TCAM is almost full and the box needs to be replaced.
I use same router with two copies of full BGP on v4 and v6. There is a way to mitigate the problem without replacing the box. The following configuration places a filter on routes being installed from BGP RIB to TCAM (FIB) limiting its usage by length of AS-PATH, so traffic to very distant networks goes via default route. This way, "show platform hardware capacity" shows: Module FIB TCAM usage: Total Used %Used 5 72 bits (IPv4, MPLS, EoM) 884736 422247 48% 144 bits (IP mcast, IPv6) 81920 8412 10% Works fine for me. mls cef maximum-routes ip 850 mls cef maximum-routes mpls 1 router bgp NNNN address-family ipv4 table-map BGP2FIB filter address-family ipv6 table-map BGP6FIB filter ! route-map BGP2FIB permit 10 match as-path 400 ! route-map BGP2FIB permit 20 match ip address prefix-list SELECTED-SET ! route-map BGP6FIB permit 10 match as-path 500 ! ip as-path access-list 400 deny ^.+_.+_.+_.+ ip as-path access-list 400 deny ^.+_65535$ ip as-path access-list 400 permit ^.* ip as-path access-list 500 deny ^.+_.+_.+ ip as-path access-list 500 deny ^.+_65535$ ip as-path access-list 500 permit ^.* _______________________________________________ cisco-nsp mailing list cisco-nsp@puck.nether.net https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/