[c-nsp] Cisco Catalyst 3750s and GRE

[christian.macnevin at uk.bnpparibas.com]

Sorry, you don't mean that they don't support PIM, do you?

(probably confused)
Christian




Internet
raj.panchal at vsnl.co.in@puck.nether.net - 13/04/2005 10:51


Sent by:    cisco-nsp-bounces at puck.nether.net

To:    brant.stevens, cisco-nsp

cc:


Subject:    RE: [c-nsp] Cisco Catalyst 3750s and GRE


As per Cisco

These are the routing limitations for Cisco 3750:

.The switch does not support tunnel interfaces for unicast routed traffic.
Only Distance Vector Multicast Routing Protocol (DVMRP) tunnel interfaces
are supported for multicast routing.


Hence u might end up in problems !!!

Raj

-----Original Message-----
From: cisco-nsp-bounces at puck.nether.net
[mailto:cisco-nsp-bounces at puck.nether.net] On Behalf Of Stevens, Brant I.
Sent: Wednesday, April 13, 2005 2:51 AM
To: cisco-nsp at puck.nether.net
Subject: [c-nsp] Cisco Catalyst 3750s and GRE

All,

I would like to terminate multiple GRE tunnels on a Catalyst 3750 for
use with OSPF dynamic routing over IPSec tunnels (encryption handled
elsewhere).  Based on a quick Google, it appears that GRE interfaces are
not supported on the 3750, but I wanted to see if anyone else had
real-world experience with this actually working despite my preliminary
findings.

If it can be done without using CEF, that is fine, but of course, I'd
like to use that path whenever possible.

Regards,
Brant.




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