[c-nsp] IP GRE tunnel up/down

[Gert Doering]

Hi,

On Wed, Jul 13, 2011 at 12:20:17PM -0400, Matthew Huff wrote:
> If it cannot make the original connection it will show up/down

There is no connection to be made for a GRE tunnel.

> 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.

gert
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Gert Doering - Munich, Germany                             gert at greenie.muc.de
fax: +49-89-35655025                        gert at net.informatik.tu-muenchen.de
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