From: Khurram Khani (kkhani@xxxxxxxxxxxxxxxxxx)
Date: Mon Oct 01 2001 - 21:19:42 GMT-3
Hi ,
I was working on learn GRE Tunnels..
Have few questions in my mind after configuration.
1. Significance of tunnel source ip:
Is this IP just used as Source IP for any packet originating from Tunnel
Interface or
a tunnel also listens on Source IP to catch any GRE packets coming in. What
I mean
is, when a GRE packet comes on a Logical or physcial interface , how it
actually
reaches to tunnel interface?
2. R1----- R2
Does tunnel destination of R1 must be tunnel source of R2?? Or R2 can have
different
tunnel source?
3. When i put the tunnel source and tunnel destination, line protocol goes
up ! even there
is no tunnel configure on the other side?? So does a router do some kind
of a Routing
table look for reachbility rather than a two-way handshake?
Help from Gurus appreciated.
Thanks
Khurram
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