[c-nsp] IP GRE tunnel up/down

[Drew Weaver]

-----Original Message-----
From: cisco-nsp-bounces at puck.nether.net [mailto:cisco-nsp-bounces at puck.nether.net] On Behalf Of Sascha Pollok
Sent: Wednesday, July 13, 2011 2:20 PM
To: Gert Doering
Cc: 'cisco-nsp'
Subject: Re: [c-nsp] IP GRE tunnel up/down

>> Can you route from the source to the tunnel destination and are there any firewalls that would block the GRE protocol?
>> Can the destination route back to the source loopback1?
>
> All not relevant, unless "tunnel keepalive" is active.
>
> Normally, the tunnel is down if either source or destination IP are not
> set (like "loopback1 has no IP") or if there is no route to the destination
> IP address.

Yes - or -imho- if the platform does not support it like a GSR
without a tunnel server card.

-Sascha

>>>>

Is this still a requirement even for 12410/12810?

If so... has anyone come up with a workaround aside from.. use a better router?

-Drew