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IXP

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