Hi,
I need assistant on routing BGP. We have one router with a few network being advertise out to both primary and backup link via BGP.
Is there a way to route the following:
Network A, B, C out to ISP 1 via BGP
Network D, E, F out to ISP 2 via BGP
This process has to be real-time traffic. Basically both links are active at the same time and there is no more failover. Specific networks will only use the dedicated links we push them out to. Traffic should be symetric on return route.
Any suggestion would be highly highly appreciated.
Our config below.
interface FastEthernet4/0
description LINK TO BACKUP - 40MBPS
bandwidth 40960
ip address Y.Y.Y.Y 255.255.255.252
ip flow ingress
load-interval 30
shutdown
duplex full
speed 100
no cdp enable
!
interface FastEthernet4/1
bandwidth 30720
no ip address
ip flow ingress
load-interval 30
duplex full
speed 100
no cdp enable
!
interface FastEthernet4/1.1
description LINK TO PRIMARY - 30MBPS
bandwidth 30720
encapsulation dot1Q 1001
ip address X.X.X.X 255.255.255.252
ip flow ingress
ip nbar protocol-discovery
service-policy output QoS-DIA-Parent-OUT
!
router bgp 1234
bgp log-neighbor-changes
neighbor Y.Y.Y.Y remote-as 5678
neighbor X.X.X.X remote-as 91011
!
address-family ipv4
neighbor Y.Y.Y.Y activate
neighbor Y.Y.Y.Y weight 3000
neighbor Y.Y.Y.Y prefix-list BLOCKINBOUNDBGP in
neighbor Y.Y.Y.Y prefix-list BLOCKOUTBOUNDBGP out
neighbor X.X.X.X activate
neighbor X.X.X.X weight 2000
neighbor X.X.X.X soft-reconfiguration inbound
neighbor X.X.X.X prefix-list BLOCKINBOUNDBGP in
neighbor X.X.X.X prefix-list BLOCKOUTBOUNDBGP out
no auto-summary
no synchronization
network A mask 255.255.255.0
network B mask 255.255.255.0
network C mask 255.255.255.0
network D mask 255.255.255.0
network E mask 255.255.255.0
network F mask 255.255.255.0
exit-address-family
!
ip classless
ip route A 255.255.255.0 Null0 250 name Route_to_advertise_BGP
ip route B 255.255.255.0 Null0 250 name Route_to_advertise_BGP
ip route C 255.255.255.0 Null0 250 name Route_to_advertise_BGP
ip route D 255.255.255.0 Null0 250 name Route_to_advertise_BGP
ip route E 255.255.255.0 Null0 250 name Route_to_advertise_BGP
ip route F 255.255.255.0 Null0 250 name Route_to_advertise_BGP
!
!
!
ip prefix-list BLOCKINBOUNDBGP seq 10 permit 0.0.0.0/0
!
ip prefix-list BLOCKOUTBOUNDBGP seq 10 permit A/24
ip prefix-list BLOCKOUTBOUNDBGP seq 15 permit B/24
ip prefix-list BLOCKOUTBOUNDBGP seq 20 permit C/24
ip prefix-list BLOCKOUTBOUNDBGP seq 25 permit D/24
ip prefix-list BLOCKOUTBOUNDBGP seq 30 permit E/24
ip prefix-list BLOCKOUTBOUNDBGP seq 35 permit F/24
