[94034] in North American Network Operators' Group
Re: Network end users to pull down 2 gigabytes a day, continuously?
daemon@ATHENA.MIT.EDU (Marshall Eubanks)
Sun Jan 7 09:23:32 2007
In-Reply-To: <20070107135008.GA21025@dochas.stdlib.net>
Cc: Frank Bulk <frnkblk@iname.com>, nanog@merit.edu
From: Marshall Eubanks <tme@multicasttech.com>
Date: Sun, 7 Jan 2007 09:09:27 -0500
To: colm@stdlib.net
Errors-To: owner-nanog@merit.edu
Dear Colm;
On Jan 7, 2007, at 8:50 AM, Colm MacCarthaigh wrote:
>
> On Sat, Jan 06, 2007 at 08:46:41PM -0600, Frank Bulk wrote:
>> What does the Venice project see in terms of the number of upstreams
>> required to feed one view,
>
>
<snip>
>> Supposedly FTTH-rich countries contribute much more
>> to P2P networks because they have a symmetrical connection and are =20=
>> more
>> attractive to the P2P clients.
>>
>> And how much does being in the same AS help compare to being =20
>> geographically
>> or hopwise apart?
>
> That we don't yet know for sure. I've been reading a lot of =20
> research on
> it, and doing some experimentation, but there is a high degree of
> correlation between intra-AS routing and lower latency and greater
> capacity. Certainly a better correlation than geographic proximity.
>
As is frequently pointed out, here and elsewhere, network topology !=3D =20=
geography.
> Using AS proximity is definitely a help for resilience though, same-AS
> sources and adjacent AS sources are more likely to remain reachable in
> the event of transit problems, general BGP flaps and so on.
>
Do you actually inject any BGP information into Venice ? How do you =20
determine otherwise
that two nodes are in the same AS (do you, for example, assume that =20
if they are in the same /24
then they are close in network topology) ?
> --=20
> Colm MacC=E1rthaigh Public Key: colm=20
> +pgp@stdlib.net
Regards
Marshall
