From: Scott Morris (smorris@internetworkexpert.com)
Date: Sun Mar 08 2009 - 11:22:43 ARST
The pro/con I'd look at is overall packet size.
IPv6IP you have a 40-byte IPv6 header + 20-byte IP header
GRE you have a 40-byte IPv6 header + 8 byte GRE header + 20 byte IP header
Which is smaller?
Scott
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
GAURAV MADAN
Sent: Sunday, March 08, 2009 7:18 AM
To: Modular
Cc: Cisco certification
Subject: Re: IPV6 Tunnels...
No pros / cons as such .. but sometimes language of ques can make us go mad
protocol 47 : GRE
protocol 41 : IPV6IP
I rememebr these 2 numbers always and can be useful in desiging ACLs as well
Gaurav Madan.
On Sun, Mar 8, 2009 at 4:37 AM, Modular <modulartx@gmail.com> wrote:
> So I've learned that if you want to tunnel IPv6 over IPv4, there are two
> easy options you can turn to.
>
> 1. Normal GRE tunnel, using the default tunnel type.
>
> 2. Configuring ipv6ip tunnel type.
>
> What are the pros/cons of using each?
>
> Thanks,
> Mod...
>
>
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