DMVPN Tunnels with EIGRP

RS_MCPRS_MCP Member Posts: 352
Hi All,

I have an DMVPN Router which has an Tunnel Interface configured to establish connections with various Routers internationally.

I am using NHRP & EIGRP to establish the connections and routes.

The problem I am having is that some of the Tunnel Interfaces on various routers keep flapping. They keep renewing themselves every 2-3 hours where as some of the connections dont and have been up for days and weeks.

Why is this flapping occuring? Why are the routes renewing themselves whilst other connections are not?

According to Cisco, certain IOS's on ISR's cause flapping, this requires an upgrade of the IOS to resolve, however I do not want to carry that out in an live environment, especially remotely.

Are there any other troubleshooting steps or solutions?

Thanks :)


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