[c-nsp] Mysterious GRE tunnel flap

[Quinn Kuzmich]

There's nothing under the HSDP events.  The other router has a higher
priority over 100 set on it's interface.

On Sun, Jul 25, 2010 at 12:26 AM, Ziv Leyes <zivl at gilat.net> wrote:

> I'll take a wild guess here.
> Since you're sourcing the tunnel with the hsrp ip, and you don't have a
> standby priority set it means that there is another device "competing" on
> the  IP address. Could it be that for some strange reason the hsrp is
> fluctuating between them and this causes the tunnel to be unstable?
> Can you check the HSRP events and see what happens?
> Also, as I said, try to take off the keepalive on the tunnel and set a
> higher standby priority to one of the devices, just to see if it helps.
> HTH
> Ziv
>