I appreciate the reply - the tunne source locall is actually an HSRP virtual interface, and it never goes down according to what I'm seeing. And as far as I can recall, we get no errors on the interface that is acting as the active router.
Q On Wed, Jul 21, 2010 at 6:00 PM, Graham Wooden <[email protected]> wrote: > I'll take a stab at this ... I think it's something physical at one of the > sites. Does any of the two interfaces has their line protocol go down? Can > you access down the link, outside the tunnel, ie. Ping your next hop during > this? > > I had something similar happen with some collocated gear at a remote site. > Around the same time everynight, err counters on an interface would go nuts > for about 2 minutes. Lots of finger pointing between LEC and us. Well, come > to find out that the building's emergency lighting would be tested at this > time, and it's cable run ran next to our T1s for a short distance before > going into our room. > > Long story short here is check the physical layer first! > > -graham > > On 7/21/10 1:17 PM, "Quinn Kuzmich" <[email protected]> wrote: > > > Ok, I have a problem that I'm hoping someone can help out with. I have > two > > 1841s seperated by a Metro-E WAN. Over this is a GRE tunnel to route > > multicast. Every morning at 8AM EST, give or take 3 minutes, the tunnel > > will go down for about 30 seconds. This happens every morning at this > time, > > there are no errors in EIGRP, nor on the WAN side (plenty of tickets > opened > > and we were watching the circuit when the flap happened, no dice) and > we're > > at a real loss. Maybe a bug in the IOS? An angry voodoo priest > somewhere? > > > > > > Ideas? Thanks in advance! > > > > Q > > _______________________________________________ > > cisco-nsp mailing list [email protected] > > https://puck.nether.net/mailman/listinfo/cisco-nsp > > archive at http://puck.nether.net/pipermail/cisco-nsp/ > > > _______________________________________________ cisco-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/
