Estou tentando alcançar link . A única diferença da configuração é que o ISP está enviando a tabela BGP completa em vez de o gateway padrão . Eu tenho um problema que o r101 não irá anunciar rotas externas para o r102, o que causa problemas quando o peer upstream do r102 desconecta e o r102 perde todas as rotas.
Minha configuração:
R101 executando a configuração:
router bgp 6001 no synchronization bgp router-id 1.1.2.253 bgp log-neighbor-changes network 1.1.1.0 network 1.1.2.0 neighbor 2.1.1.249 remote-as 6000 neighbor 2.1.1.249 soft-reconfiguration inbound neighbor 2.1.1.249 prefix-list 3 in neighbor 2.1.1.249 route-map R1-DC-MAP out neighbor 1.1.2.254 remote-as 6001 neighbor 1.1.2.254 next-hop-self neighbor 1.1.2.254 soft-reconfiguration inbound maximum-paths 2 no auto-summary ! ip prefix-list 1 seq 5 permit 1.1.1.0/24 ip prefix-list 2 seq 5 permit 1.1.2.0/24 ip prefix-list 3 seq 5 deny 1.1.1.0/23 ip prefix-list 3 seq 10 permit any ! route-map R1-DC-MAP permit 10 match ip address prefix-list 1 set as-path prepend 6001 6001 6001 ! route-map R1-DC-MAP permit 20 match ip address prefix-list 2 ! route-map R1-DC-MAP deny 200 ! ip route 1.1.1.0/24 null0 ip route 1.1.2.0/24 null0
R102 executando a configuração:
router bgp 6001 no synchronization bgp router-id 1.1.2.254 bgp log-neighbor-changes network 1.1.1.0 network 1.1.2.0 neighbor 3.1.1.25 remote-as 6000 neighbor 3.1.1.25 soft-reconfiguration inbound neighbor 3.1.1.25 prefix-list 3 in neighbor 3.1.1.25 route-map R2-SIX-MAP out neighbor 1.1.2.253 remote-as 6001 neighbor 1.1.2.253 next-hop-self neighbor 1.1.2.253 soft-reconfiguration inbound maximum-paths 2 no auto-summary ! ip prefix-list 1 seq 5 permit 1.1.2.0/24 ip prefix-list 2 seq 5 permit 1.1.1.0/24 ip prefix-list 3 seq 5 deny 1.1.1.0/23 ip prefix-list 3 seq 10 permit any ! route-map R2-SIX-MAP permit 10 match ip address prefix-list 1 set as-path prepend 6001 6001 6001 ! route-map R2-SIX-MAP permit 20 match ip address prefix-list 2 ! route-map R2-SIX-MAP deny 30 match ip address 1.1.1.0/23 ! route-map R2-SIX-MAP deny 200 ! ip route 1.1.1.0/24 null0 ip route 1.1.2.0/24 null0 ! ip forwarding ! line vty ! end
Lista de interfaces do R101:
Interface vlan3 is up, line protocol detection is disabled inet 1.1.1.253/30 broadcast 1.1.1.255 Interface vlan4 is up, line protocol detection is disabled inet 2.1.1.253/29 broadcast 2.1.1.255 Interface vlan101 is up, line protocol detection is disabled inet 1.1.1.61/26 broadcast 1.1.1.63 inet 1.1.1.1/32 broadcast 1.1.1.1 Interface vlan106 is up, line protocol detection is disabled inet 1.1.1.125/27 broadcast 1.1.1.127 inet 1.1.1.97/32 broadcast 1.1.1.97 Interface vlan107 is up, line protocol detection is disabled inet 1.1.1.141/28 broadcast 1.1.1.143 inet 1.1.1.129/28 broadcast 1.1.1.143 secondary Interface vlan109 is up, line protocol detection is disabled inet 1.1.1.93/27 broadcast 1.1.1.95 inet 1.1.1.65/32 broadcast 1.1.1.65
Configuração da interface R102:
Interface vlan3 is up, line protocol detection is disabled inet 1.1.2.254/30 broadcast 1.1.2.255 Interface vlan4 is up, line protocol detection is disabled inet 3.1.1.29/29 broadcast 3.1.1.31 Interface vlan101 is up, line protocol detection is disabled inet 1.1.2.62/26 broadcast 1.1.2.63 inet 1.1.2.1/32 broadcast 1.1.2.1 Interface vlan106 is up, line protocol detection is disabled inet 1.1.2.126/27 broadcast 1.1.2.127 inet 1.1.2.97/32 broadcast 1.1.2.97 Interface vlan107 is up, line protocol detection is disabled inet 1.1.2.142/28 broadcast 1.1.2.143 inet 1.1.2.129/28 broadcast 1.1.2.143 secondary Interface vlan109 is up, line protocol detection is disabled inet 1.1.2.94/27 broadcast 1.1.2.95 inet 1.1.2.65/32 broadcast 1.1.2.65
Os anúncios não estão funcionando no R101, mas posso ver anúncios provenientes do R102. A comunicação com os pares BGP do ISP upstream funciona como esperado e estou obtendo o BGP completo a partir deles.
Anúncios R101
BGP table version is 0, local router ID is 1.1.2.253 Status codes: s suppressed, d damped, h history, * valid, > best, = multipath, i internal, r RIB-failure, S Stale, R Removed Origin codes: i - IGP, e - EGP, ? - incomplete Network Next Hop Metric LocPrf Weight Path
R101 rotas recebidas:
BGP table version is 0, local router ID is 1.1.2.253 Status codes: s suppressed, d damped, h history, * valid, > best, = multipath, i internal, r RIB-failure, S Stale, R Removed Origin codes: i - IGP, e - EGP, ? - incomplete Network Next Hop Metric LocPrf Weight Path *> 1.1.1.0 1.1.2.254 0 100 0 i *> 1.1.2.0 1.1.2.254 0 100 0 i Total number of prefixes 2
Alguma idéia do que pode estar errado? Qualquer ajuda apreciada.
Tags networking routing