Re: Tunnel mode ipv6 or tunnel mode gre ipv6?

Sweet - thanks Nathan!

2009/11/4 Nathan Richie <nathanr_at_boice.net.2573395321876976672.send.nyms.net
>

> INE has a great blog on the IPv6 tunnels. You are correct concerning the
> overhead, but with the GRE IPv6 tunnel, the packet can carry additional data
> such as IS-IS.
>
>
> http://blog.internetworkexpert.com/2009/08/28/ipv6-transition-mechanisms-part-2-greipv4-tunnels/
>
> Hope this helps....
>
> -----Original Message-----
> From: nobody_at_groupstudy.com [mailto:nobody_at_groupstudy.com] On Behalf Of
> groupstudy_at_nyms.net
> Sent: Tuesday, November 03, 2009 6:24 PM
> To: ccielab_at_groupstudy.com
> Subject: Tunnel mode ipv6 or tunnel mode gre ipv6?
>
> Hi chaps,
> What's the difference between running "tunnel mode ipv6" and "tunnel mode
> gre ipv6"? I'm working on a rented rack so I can't sniff.
>
> Both appear to work as long as each side is running the same mode, but not
> intercompatible. Both encapsulate in IPv6 but I don't get the need for two
> methods of doing this.
> I guess the easy answer is that the latter encapsulates into GRE before
> encapsulating into IPv6 - if that's the case, then why would anyone use that
> option which I assume adds extra size to the headers?
>
> Can't find much on the Cisco site or Google other than this: Static tunnel
> interface configured to encapsulate IPv6 or IPv4 packets in IPv6.
>
> Anyone help me out here? What am I missing?
> THANKS!
>
>
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Received on Sat Jan 01 2000 - 01:01:01 ARST