From: Padhu (LFG) (padhu@xxxxxxxxxxxx)
Date: Mon Jul 02 2001 - 00:33:32 GMT-3
if the tunnel destination is the same as in the first tunnel , i don't know
multipoint tunnel would help here. If someone has a working config of
mutipont gre tunnel i would love to see it.
Have u tried these ?
1. Tunnel mode IPIP
2. Disable route cacheing on the tunnel interface
3. If running eigrp and igrp on the same major network on the tunnel try
making the one another as passive-interface.
On tun 0
router eigrp 10
passive int tun 1
On tun 1
router igrp 10
passive int tun 0
Cheers,Padhu
-----Original Message-----
From: Chuck Larrieu
To: Roman Rodichev; signal@shreve.net
Cc: fallow46@yahoo.com; ccielab@groupstudy.com
Sent: 7/1/01 10:01 PM
Subject: RE: two tunnels
can't find a specific on CCO ( Doc CD ) but it is implied that there can
be
only one tunnel per interface.
http://www.cisco.com/univercd/cc/td/doc/product/software/ios121/121cgcr/
inte
r_c/icdlogin.htm#xtocid292793
watch the wrap on this one -
The alternative might be a point to multipoint tunnel. I've read about
these
in Adam Quiggle's book Implementing Cisco VPN's, but I have not been
able to
get one to work, and I haven't had the wherewithal to pursue it much
further.
Chuck
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com]On Behalf Of
Roman Rodichev
Sent: Sunday, July 01, 2001 7:29 PM
To: signal@shreve.net
Cc: fallow46@yahoo.com; ccielab@groupstudy.com
Subject: Re: two tunnels
I tried neighbor statements, but EIGRP neighbors still won't connect
when
you have 2 tunnels across the same interface.
>From: Brian <signal@shreve.net>
>Reply-To: Brian <signal@shreve.net>
>To: Roman Rodichev <rodic000@hotmail.com>
>CC: <fallow46@yahoo.com>, <ccielab@groupstudy.com>
>Subject: Re: two tunnels
>Date: Sun, 1 Jul 2001 21:16:48 -0500 (CDT)
>
>I bet that is correct. You could use neighbor statments to force
unicast
>perhaps. I know that alot of labs with GRE tunnels will run RIPv2 over
>them as opposed to EIGRP
>
>Brian
>
>
>On Sun, 1 Jul 2001, Roman Rodichev wrote:
>
> > Thanks Garry.
> >
> > I think you are right. The destination router will have no way of
>figuring
> > out to which tunnel interface GRE packet came to.
> >
> >
> > >From: garry baker <fallow46@yahoo.com>
> > >To: Roman Rodichev <rodic000@hotmail.com>
> > >Subject: Re: two tunnels
> > >Date: Sun, 1 Jul 2001 18:19:59 -0700 (PDT)
> > >
> > >Roman,
> > >
> > >I may be wrong here, but i think i remember someone
> > >posting something here a while ago saying that
> > >multicast won't work with tunnels. i have never tried
> > >it so i am just repeating something i think i remember
> > >seeing in a post.
> > >
> > >Garry
> > >--- Roman Rodichev <rodic000@hotmail.com> wrote:
> > > > I'm having some problems with setting up two GRE
> > > > tunnels between two
> > > > routers. I create two tunnel interfaces with source
> > > > Serial0 and destination
> > > > as the address of another router. I have EIGRP
> > > > running on one of the tunnels
> > > > and IGRP on another of the tunnels. No networks
> > > > would get advertised across.
> > > > Eigrp neighbor relationship wouldn't get installed.
> > > > If I shut down one of
> > > > the tunnels, EIGRP (or IGRP) will start working.
> > > > (Autonomous Systems are
> > > > different)
> > > >
> > > > Is anyone aware why this wouldn't work? In reality
> > > > GRE packets will have
> > > > source and destination the same for both of the
> > > > tunnels. But then I would
> > > > think the destination router would unpack the actual
> > > > IP packet with source
> > > > and destination of the real tunnel interfaces. ?
> > > >
> > > > Roman
> > > >
> > > >
> > > >
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