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IXP

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

Kris