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VPN Failover using VPN ISM

Hello everyone,

I am trying to get some feedback on VPN failover. The plan is to have two different ISPs at the remote site and two different ISPs at a central site.  Each location will have a primary ISP.  What I want to accomplish is as seamless a failover as possible.  If Remote ISP 1 goes down I want Remote ISP 2 to pick up the tunnel as soon as possible both going into Central ISP 1.  VoIP traffic is going to be running over the VPN.  Is it going to be possible to keep the call going during the transition?  I know there is going to be some loss of packets but it would be great not to have the call drop.

Any advice, gotchas or differeing opinions are always welcome if done in the spirit of sharing

All replies rated.

Thanks in advance!

1 REPLY

Re: VPN Failover using VPN ISM

in my experience a properly configured VPN setup running eigrp through gre tunnels under IPSec can transition quickly enough to avoid dropped calls.

Sent from Cisco Technical Support iPad App

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