[as112-ops] Optimizing AS112 networking? was How many public AS112 nodes? 72, maybe

[Aleksi Suhonen]

Hi,

> I wrote:
>>> The auth servers are 192.175.48.6 and 192.175.48.42. It's not like
>>> dns has a lot of choice for lower latency auth servers...

On 04/11/12 15:26, Shane Kerr wrote:
> However, perhaps we could persuade IANA to delegate this to a set of 4
> or 5 addresses in different subnets, and then each AS112 operator could
> pick one of these to advertise. It could in principle decrease the
> amount of cross-oceanic traffic, because as you noted DNS will
> automatically try to get to the server that responds fastest.

I don't think that is what would happen.

AS112 operators would be tempted to advertise all the subnets instead of 
just one of them, which would put us back to square 1.

Also, if in the current scheme somebody is using a trans-oceanic AS112 
node it's because it's the best path they see. If the AS112 nodes were 
fragmented to several prefixes, the same operator would be less likely 
to see "local AS112 routes" on average, and the result would be at most
as good as the current scheme.

This is basically the same argument as Joe Abley's.

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	Aleksi Suhonen / TREX  Tampere Region Exchange Oy