Router Load Balance Dual Wan

Continuing previous post entry about Router Multiple Dual Wan Ports Backup Settings. I am going to demonstrate router load-balancing system using bgp routing. Just to recall, this is the topology that I used for this demonstration :

To reach load balancing, you must configure the configuration in R2 :

R2
router bgp 7
no synchronization
bgp bestpath as-path multipath-relax
neighbor 7.7.23.3 remote-as 33
neighbor 7.7.24.4 remote-as 44
maximum-paths 2
no auto-summary

After you have configured it, clear bgp neighbor on R2

clear ip bgp neighbor *

And show ip route int R2, you will see there are two paths to ip 5.5.5.5/32. This shows load balance to loopback0 in R5.

 

You can see that the traffic flows to R4 and R3 alternately. viola the load balancing system is working now. Good luck in your lab.

For the GNS3 lab file, you can download here :

http://www.4shared.com/rar/wmTh27io/LoadBalance.html