MPLS for IPv6

Nathan Ward nanog at daork.net
Tue Nov 4 17:45:55 CST 2008


On 5/11/2008, at 11:36 AM, Daniel Roesen wrote:

> On Tue, Nov 04, 2008 at 02:53:46PM -0600, devang patel wrote:
>> Does any vendor support the MPLS for native IPv6 network?
>
> Unfortunately noone of the major vendors have yet implemented MPLS
> control plane via IPv6 transport. From my understanding, the protocol
> specs are there, just no implementation.
>
> So for now, you still have to use IPv4 for the MPLS network control
> plane and must either forward IPv6 natively dual-stack alongside IPv4,
> or transport IPv6 via 6(V)PE.
>
> "no customer demand", as usual. It's just us weirdos trying to do such
> things. :)

Correct, LDP etc. must all be done at IPv4.
That can do the MPLS label bits, and IPv6 can then be carried inside  
MPLS.

If you use 10.0.0.0/8 for numbering your point to point links, you get  
4-8M links, dependant on whether you do /30 or /31.

I don't imagine that represents a problem for many people.

--
Nathan Ward








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