ECMP Configuration Questions

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ECMP Configuration Questions

L0 Member



New to the board.  I have two WAN circuits going to two separate ISPs.  I would like to run ECMP with weighted round robin over ISP1 & ISP2.  However, I want to verify this can be achieved successfully in my environment.  I have 15-20 VPN connections to various agencies which all must go out the correct circuit (ISP1) and IP address.  I have hard coded these in as destination NAT rules and they work fine but currently I am only using ISP1 and ISP2 is strictly a backup.  I have read a few articles stating this is possible but that I would need multiple VRs.  I currently only have one VR in place.  Is there a good document somewhere with detailed configuration steps or could someone tell me if this configuration would work in my environment?


Thank you very much in advance!



Community Team Member

Hi @justinmoose ,


As far as I know you can ECMP using just one VR.

Please check out the following KB on how to implement ECMP:


In this light board presentation, you will learn the benefits of deploying ECMP, and review a basic topology of how to configure ECMP in your network:


Hope this helps,


LIVEcommunity team member, CISSP
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