Hello all,
Listen, my scenario is as follows:
* Our network has 4 T1 links towards an ISP1, and 2 more T1's to a different one(ISP2).
* The egp is BGP+4 and the way traffic is being handled is by means of loopbacks on account of balancing.
* Traffic is being load balanced between our 2 ISPs.
* A subnet, obviously coming from our LAN, needs to be routed towards ISP1 ONLY.
Let me post a snippet of my config on the border router and below a detailed explanation>
router bgp 65534
network 172.16.0.0
neighbor 192.168.254.1 description ISP1
neighbor 192.168.254.1 update-source Loopback0
neighbor 148.140.140.1 description ISP2
neighbor 148.140.140.1 update-source Loopback0
! 4 T1 links, each with its own ip address, ISP1
ip route 192.168.254.1 255.255.255.255 Serial1/0:1
ip route 192.168.254.1 255.255.255.255 Serial1/1:1
ip route 192.168.254.1 255.255.255.255 Serial1/2:1
ip route 192.168.254.1 255.255.255.255 Serial1/3:1
! 2 T1 links, each with its own ip address, ISP2
ip route 148.140.140.1 255.255.255.255 Serial2/2:1
ip route 148.140.140.1 255.255.255.255 Serial2/3:1
route-map changenh, permit, sequence 10
Match clauses:
ip address (access-lists): 2
Set clauses:
ip next-hop 192.168.254.1
access-list 2 permit ip 172.16.53.0 0.0.0.255
*The BGP part, I reckon, is self-explanatory, loopback addresses are being used as to balance packets.
*In the route-map section, my intention is making subnet 172.16.53.0/24 exit via ISP1's loopback address (192.168.254.1)
I would expect that traffic coming from network 172.16.53.0/24 exits via the 4 T1 links, is this doable?
Someone suggested on setting the 4-T1 links' IP addresses in the route map. Nevertheless, if understood correctly, the router will forward traffic to the first active next hop rather than move it on a round robin basis.
Any thoughts or comments?
Best regards,
Listen, my scenario is as follows:
* Our network has 4 T1 links towards an ISP1, and 2 more T1's to a different one(ISP2).
* The egp is BGP+4 and the way traffic is being handled is by means of loopbacks on account of balancing.
* Traffic is being load balanced between our 2 ISPs.
* A subnet, obviously coming from our LAN, needs to be routed towards ISP1 ONLY.
Let me post a snippet of my config on the border router and below a detailed explanation>
router bgp 65534
network 172.16.0.0
neighbor 192.168.254.1 description ISP1
neighbor 192.168.254.1 update-source Loopback0
neighbor 148.140.140.1 description ISP2
neighbor 148.140.140.1 update-source Loopback0
! 4 T1 links, each with its own ip address, ISP1
ip route 192.168.254.1 255.255.255.255 Serial1/0:1
ip route 192.168.254.1 255.255.255.255 Serial1/1:1
ip route 192.168.254.1 255.255.255.255 Serial1/2:1
ip route 192.168.254.1 255.255.255.255 Serial1/3:1
! 2 T1 links, each with its own ip address, ISP2
ip route 148.140.140.1 255.255.255.255 Serial2/2:1
ip route 148.140.140.1 255.255.255.255 Serial2/3:1
route-map changenh, permit, sequence 10
Match clauses:
ip address (access-lists): 2
Set clauses:
ip next-hop 192.168.254.1
access-list 2 permit ip 172.16.53.0 0.0.0.255
*The BGP part, I reckon, is self-explanatory, loopback addresses are being used as to balance packets.
*In the route-map section, my intention is making subnet 172.16.53.0/24 exit via ISP1's loopback address (192.168.254.1)
I would expect that traffic coming from network 172.16.53.0/24 exits via the 4 T1 links, is this doable?
Someone suggested on setting the 4-T1 links' IP addresses in the route map. Nevertheless, if understood correctly, the router will forward traffic to the first active next hop rather than move it on a round robin basis.
Any thoughts or comments?
Best regards,