On 10/20/2011 18:49, Gert Doering wrote: > On Thu, Oct 20, 2011 at 06:42:59PM +0400, Andrey Koklin wrote: >> Yes. But still I cannot persuade R2-AS1 router to advertise prefixes there. >> Even without AS3 in the path...
> So what's the *export policy* of R2-AS1 towards the AS3 router? > [..] >>> So how's your export policies on that router towards the neighbour >>> that you should see the prefix on? >> The R3-AS3 router doesn't know these prefixes. It has its own BGP table. > I'm not sure how that answer relates to anything... Oh, sorry, seems I've understood you wrongly with my poor English... > Most likely you have some sort of filter on R2-AS1 that does not permit > these prefixes - and I'm asking for the config so we can look at it > and try to see where it's filtering. Sure, it has simple filtering rules. Here is the proper config: -- 8< -- router bgp 65036 no synchronization bgp log-neighbor-changes bgp redistribute-internal network 10.36.0.0 mask 255.255.0.0 network 213.129.126.0 timers bgp 5 20 15 neighbor 10.36.254.2 remote-as 21017 neighbor 10.36.254.2 soft-reconfiguration inbound neighbor 10.36.254.2 route-map FROM_VPN_CTK in neighbor 10.36.254.2 route-map TO_VPN_CTK out neighbor 213.129.126.1 remote-as 65036 neighbor 213.129.126.1 soft-reconfiguration inbound default-information originate distance bgp 100 100 10 no auto-summary ip as-path access-list 100 permit ^$ ip as-path access-list 101 permit _21017_ ip as-path access-list 102 permit _21017_21017_ ip prefix-list TO_VPN_CTK description announced nets through CTK VPN ip prefix-list TO_VPN_CTK seq 10 permit 0.0.0.0/0 ip prefix-list TO_VPN_CTK seq 20 permit 213.129.126.0/24 ip prefix-list TO_VPN_CTK seq 30 permit 10.36.0.0/16 ip prefix-list TO_VPN_CTK seq 35 permit 10.36.0.0/16 le 28 ip prefix-list TO_VPN_CTK seq 40 permit 10.36.0.0/18 le 28 ip prefix-list TO_VPN_CTK seq 50 permit 10.36.248.0/23 le 24 route-map TO_VPN_CTK permit 10 match ip address prefix-list TO_VPN_CTK match as-path 100 -- 8< -- I've just tried to remove filters. The router started to advertise all but the needed prefixes, like 10.36.72.32/27... _______________________________________________ cisco-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/
