[c-nsp] Older gear and IPv6
Mohacsi Janos
mohacsi at niif.hu
Wed Mar 24 10:58:08 EDT 2010
On Wed, 24 Mar 2010, Charles Mills wrote:
> Doing some research for an IPv6 migration "plan". It is almost
> inevitable that it will run on older switch gear at some point for the
> sites I'm being tasked with evaluating.
>
> Older Layer 3 gear being what it is I'm already aware does everything
> in software if it supports it at all.
>
> What about older layer 2 gear? Are there any issues there or is a
> packet just a packet regardless of the address format? I can't think
> of anything to worry about here unless there are MTU issues.
Layer 2 should not be a problem. There should be no MTU size issues IPv6
(except that the sender node expecting working path-mtu-discovery along
the path).
We had a strange layer2? problem at broadband environment. PPP should have
been transparent, but BRAS dropped IPv6 packets since it was unknown to
them....
>
> Are any hardware vendors making IPv6 capable gear that does hardware
> switching or are we processed switched for the time being?
If you think about the Cisco, as mailing list suggest, have a look at
Catalyst 3560-(??) and 3750-(??) series. Also more advanced switches
(4500, 4900, 6500) are supporting IPv6 hardware forwarding.
Best Regards,
Janos Mohacsi
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