Re: IXP

[kris foster <kris.foster () gmail com>]

On Apr 17, 2009, at 12:05 PM, Arnold Nipper wrote:

> On 17.04.2009 21:04 kris foster wrote
>
> > On Apr 17, 2009, at 12:00 PM, Arnold Nipper wrote:
> >
> > > On 17.04.2009 20:52 Paul Vixie wrote
> > >
> > > > with the advent of vlan tags, the whole idea of CSMA for IXP
> > > > networks is passe.
> > > > just put each pair of peers into their own private tagged vlan and
> > > > let one of
> > > > them allocate a V4 /30 and a V6 /64 for it.  as a bonus, this
> > > > prevents third
> > > > party BGP (which nobody really liked which sometimes got turned on
> > > > by mistake)
> > > > and prevents transit dumping and/or "pointing default at" someone.
> > > > the IXP no
> > > > longer needs any address space, they're just a VPN provider.
> > > > shared-switch
> > > > connections are just virtual crossconnects.
> > >
> > > Large IXP have >300 customers. You would need up to 45k vlan tags,
> > > wouldn't you?
> >
> > QinQ could solve this
>
> not really

painfully, with multiple circuits into the IX :) I'm not advocating  
Paul's suggestion at all here

Kris