From: Scott Morris (swm@emanon.com)
Date: Sat Mar 17 2007 - 21:48:04 ART
I don't remember it working in this fashion... Perhaps it's late at night
and my brain isn't firing correctly, but I always thought the whole point of
"tunnel mode gre ipv6" was that IPv6 was the transport for setting up the
tunnel.
I'm not in front of equipment at the moment, so try this out and see whether
I'm nuts or not. (Which I'm hoping isn't the case, at least not for this!
(grin))
Scott Morris, CCIE4 (R&S/ISP-Dial/Security/Service Provider) #4713, JNCIE
#153, CISSP, et al.
CCSI/JNCI-M/JNCI-J
IPexpert VP - Curriculum Development
IPexpert Sr. Technical Instructor
smorris@ipexpert.com
http://www.ipexpert.com
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of Matt
Mullen
Sent: Saturday, March 17, 2007 4:21 PM
To: Cisco certification
Subject: GRE IPv6
Hi all,
I am having an issue with getting an IPv6 over GRE tunnel to come up. As
soon as I enter the 'tunnel mode gre ipv6' command on the tunnel interface,
the interface goes down and remains down. Here's the config:
R1
interface FastEthernet0/0
ip address 155.1.10.1 255.255.255.0
ipv6 address 2001:1::1/64
interface Tunnel14
no ip address
ipv6 address 2001:14::1/64
tunnel source FastEthernet0/0
tunnel destination 155.1.4.4
tunnel mode gre ipv6
R4
interface FastEthernet0/0
ip address 155.1.4.4 255.255.255.0
ipv6 address 2001:4::4/64
interface Tunnel14
no ip address
ipv6 address 2001:14::4/64
tunnel source FastEthernet0/0
tunnel destination 155.1.10.1
tunnel mode gre ipv6
I also tried defining loopback interfaces instead of using the physical
interfaces for tunnel source/destination, but get the same result. The
code is 12.4(10b). Is anyone else seeing this behavior?
Thanks,
Matt
This archive was generated by hypermail 2.1.4 : Sun Apr 01 2007 - 06:35:51 ART