[6bone] Re: IPv6-only IXP's are absolutely wrong

[Gert Doering]

Hi,

On Mon, Oct 21, 2002 at 02:09:18PM -0700, Bill Manning wrote:
> % We actually had a separate v6 VLAN for a number of years and concluded that
> % it was not a problem at all to use both protocols in the same VLAN. The
> % benefit of doing that is that members can use dual stack routers which is
> % exactly what most v6 enabled IXPs do.
> 
> 	Again, YMMV.  Two of my native v6 peers refuse to use their native
> 	v4 boxes because of the performance hit.  That and something about
> 	using EFT/beta code in production boxes. :)

On the DECIX, we have a number of participants with Junipers, who do v4+v6
on the same box, and a number of Cisco users, who have separate boxes for
v4 and v6 connectivity.

We are using one VLAN for both, so the Juniper people can save the second
port / second router.

> 	Not saying that these issues can't be worked around. Its that there
> 	are real issues here and for somefolks, it may justify an independent
> 	fabric.  For others, a separate VLAN will work and for others there
> 	is no problem with dumping all the traffic on the same media.

Thanks for your insights, though.  We haven't seen any problems yet, but
will closely monitor those issues.

Gert Doering
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