Hi Cisco,
Im new to routing and need help preparing a config for 2 routers.
We have 2 offices next to each other connected via a Layer 2 point to point access link. Each offices have a router running connected to separate ISP AS. Each offices have unique public and private IP Addresses.
I need to have BGP running on both sites so if ISP 2 fails in office 2 (ATLAS), it's public IP Address will be routed to and from ISP 1 via office 1 and default router traffic for office 2 (ATLAS) will use the L2 point to point link to get to the Internet via office 1 (NEXUS) link. Same scenerio with ISP 1 failing in office 1 (NEXUS).
NEXUS
interface GigabitEthernet0/0
description LINK TO ISP 1
bandwidth 10240
ip address X.X.X.2 255.255.255.252
ip nat outside
!
interface GigabitEthernet0/1
description LINK TO SWITCH STACK
no ip address
!
interface GigabitEthernet0/1.101
description LINK TO OFFICE 1 LAN
encapsulation dot1Q 101
ip address 192.168.1.1 255.255.255.0
ip nat inside
!
interface FastEthernet1/1
description LINK TO OFFICE 2
bandwidth 102400
ip address 172.17.0.1 255.255.255.252
!
router bgp 300
bgp log-neighbor-changes
neighbor X.X.X.1 remote-as 100
!
address-family ipv4
neighbor X.X.X.1 activate
neighbor X.X.X.1 soft-reconfiguration inbound
no auto-summary
no synchronization
network 61.1.1.0 mask 255.255.255.0
exit-address-family
!
ip route 192.168.2.0 255.255.255.0 172.17.0.2 name OFFICE2_ATLAS
ip route 61.1.1.0 255.255.255.0 Null0 200 name NEXUS_BGP
===========================================================================
ATLAS
interface GigabitEthernet0/0
description LINK TO ISP 2
bandwidth 10240
ip address Y.Y.Y.2 255.255.255.0
ip nat outside
!
interface GigabitEthernet0/1
description LINK TO SWITCH STACK
no ip address
!
interface GigabitEthernet0/1.101
description LINK TO OFFICE 2 LAN
encapsulation dot1Q 101
ip address 192.168.2.1 255.255.255.0
ip nat inside
!
interface FastEthernet0/0/0
description LINK TO OFFICE 1
bandwidth 102400
ip address 172.17.0.2 255.255.255.252
!
router bgp 300
bgp log-neighbor-changes
neighbor Y.Y.Y.1 remote-as 200
neighbor Y.Y.Y.1 ebgp-multihop 2
neighbor Y.Y.Y.1 update-source GigabitEthernet0/0
!
address-family ipv4
neighbor Y.Y.Y.1 activate
neighbor Y.Y.Y.1 soft-reconfiguration inbound
no auto-summary
no synchronization
network 61.2.2.0 mask 255.255.255.0
exit-address-family
!
ip route 192.168.1.0 255.255.255.0 172.17.0.1 name OFFICE1_NEXUS
ip route 61.2.2.0 255.255.255.0 Null0 200 name ATLAS_BGP
Help please.
Thanks
