I am looking for some guidance with the following. I have a feeling I am missing something or that there is a better way
I have the following setup, eBGP to the same ISP, iBGP inside the AS between the routers and 6509s
I would like to do the following, lets say I have 1.1.1.0.... 1.1.6.0
These are advertised by my 6509s through BGP. I would like to balance the traffic across both of the links, so inbound/outbound traffic would be
1.1.1.0 to 3925 (primary) and 3825 as secondary
1.1.2.0 to 3825 (primary) and 3925 as secondary
I was thinking I should be able to do this using route maps
on the 3925
access-list 1 permit 1.1.1.0
access-list 1 permit 1.1.3.0
access-list 1 permit 1.1.5.0
access-list 2 permit 1.1.2.0
access-list 2 permit 1.1.4.0
access-list 2 permit 1.1.6.0
route-map subnet permit 10
match ip address 1
set as-path prepend 65401 65401
route-map subnet permit 20
match ip address 2
router bgp x.x.x.x
neighbor <core1> route-map subnet in
neighbor <core2> route-map subnet in
3825
access-list 1 permit 1.1.1.0
access-list 1 permit 1.1.3.0
access-list 1 permit 1.1.5.0
access-list 2 permit 1.1.2.0
access-list 2 permit 1.1.4.0
access-list 2 permit 1.1.6.0
route-map subnet permit 10
match ip address 2
set as-path prepend 65401 65401
route-map subnet permit 20
match ip address 1
router bgp x.x.x.x
neighbor <core1> route-map subnet in
neighbor <core2> route-map subnet in
Any help would be much appreciated
