[c-nsp] re-advertising eBGP learned prefixes

[Andrey Koklin]

On 10/21/2011 11:38, Michael Chomicz wrote:

> Looks like your as-path ACL is still blocking your route

> try:

> ip as-path access-list 100 permit _30835

Indeed, this AS is last in the path, thank you.

I've changed the acl, still the problem remains:

-- 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 100 permit _30835

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< --

But unfortunately, the problem remains:

spring#cle ip bgp * soft                                      
spring#sh ip bgp 10.36.72.32                      
BGP routing table entry for 10.36.72.32/27, version 571288
Paths: (1 available, best #1, table Default-IP-Routing-Table)
Flag: 0x820
  Not advertised to any peer
  20485 30835, (received & used)
    10.36.2.22 (metric 3072) from 213.129.126.1 (10.36.1.1)
      Origin incomplete, metric 0, localpref 100, valid, internal, best
      Originator: 10.36.1.4, Cluster list: 10.36.1.1