nanog mailing list archives
Re: IXP
From: Randy Bush <randy () psg com>
Date: Sat, 18 Apr 2009 08:12:20 +0900
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
Current thread:
- RE: IXP, (continued)
- Re: IXP Richard A Steenbergen (Apr 17)
- Re: IXP Daniel Roesen (Apr 17)
- Re: IXP Randy Bush (Apr 17)
- Re: IXP Matthew Moyle-Croft (Apr 17)
- RE: IXP Deepak Jain (Apr 17)
- Re: IXP Stephen Stuart (Apr 17)
- Re: IXP Paul Vixie (Apr 18)
- Re: IXP bmanning (Apr 18)
- Re: IXP Paul Vixie (Apr 18)
- Re: IXP bmanning (Apr 18)
- Re: IXP Steven M. Bellovin (Apr 18)
- Re: IXP Paul Vixie (Apr 18)
- Re: IXP bmanning (Apr 18)