Load Sharing with HSRP and BGP

[ghanshyam.saini]

Hi,

I am configuring multihoming with HSRP.

I have to ISPs (A and B) and two Routers.

For link failure BGP willtake care and for Router failure HSRP will take care.

Using this concept i can use only one link at any time.

Is there any way that i can share the load ( or set incoming and outgoing traffic thru ISP A or ISP B)

I am following this document:

http://www.cisco.com/en/US/tech/tk365/technologies_configuration_example09186a0080093f2c.shtml

[Giuseppe Larosa]

Hello ghanshyam,

for the upstream outgoing direction you can define two HSRP groups running on the same interfaces with a different VIP and a different Active router.

Then you distribute the two different VIPs on your servers and Pcs.

For the incoming directions from the internet ISPs ,if they (the ISPs) accept two longer prefixes from you, you can make one preferred through ISP1 and one through ISP2 by using AS path prepeding.

However, your capability to influence the return path is limited to this for the BGP protocol characteristics.

You can get some usage of both links on both directions but you cannot expect an exact 50% ratio.

hope to help

Giuseppe