Hi Everyone,
I'm trying to figure out the best way to do this. Basically, I have a router that's peering with 2 different providers using BGP. I want to make sure that certain network follow a specific provider as a primary, but can also use the second provider as a backup.
(see image attached)
I am provided a /23 address that I will be advertising to the BGP neighbors. I would like a /24 intended for PC-A go down ISP-A as primary, and ISP-B as secondary; but also at the same time have a /24 intended for PC-B go down ISP-B as primary and ISP-A as secondary.
I'm considering using route-maps
Is this something that I would want to use?
ip access-list standard PC_A
permit 1.1.0.0 0.0.0.255
ip access-list standard PC_B
permit 1.1.1.0 0.0.0.255
route-map RMAP_A_IN permit 10
match ip address PC-A
set local-preference 200
route-map RMAP_A_IN permit 20
match ip address PC_A
set local-preference 100
route-map RMAP_A_IN permit 30
set local-preference 50
route-map RMAP_B_IN permit 10
match ip address PC_B
set local-preference 200
route-map RMAP_B_IN permit 20
match ip address PC_B
set local-preference 100
route-map RMAP_B_IN permit 30
set local-preference 50
router bgp 12345
network 1.1.0.0
network 1.1.1.0
neighbor ISP-A remote-as 5555
neighbor ISP-A route-map RMAP_A_IN in
neighbor ISP-B remote-as 7777
neighbor ISB-B route-map RMAP_B_IN in
