[113653] in North American Network Operators' Group
Re: IXP
daemon@ATHENA.MIT.EDU (Randy Bush)
Fri Apr 17 19:12:37 2009
Date: Sat, 18 Apr 2009 08:12:20 +0900
From: Randy Bush <randy@psg.com>
To: Arnold Nipper <arnold@nipper.de>
In-Reply-To: <49E8D1E5.1070004@nipper.de>
Cc: Paul Vixie <vixie@isc.org>, nanog@merit.edu
Errors-To: nanog-bounces@nanog.org
>> 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?
now arnold, you're spoiling a great idea. researchers could measure the
exchnge to see if it ever fully converged (to steal a routing term).
nice paper there, and who cares about working connectivity.
</sarcasm>
randy
