Date: Tue, 29 Jul 2003 17:19:39 +1000 (EST) From: jason andrade <jason@rtfmconsult.com> To: =?ISO-8859-1?Q?Jo=E3o_Carlos_Mendes_Lu=EDs?= <jonny@jonny.eng.br> Cc: Ken Smith <kensmith@cse.Buffalo.EDU> Subject: Re: Mirror Site Requirements - Final Draft? Message-ID: <Pine.GSO.4.50.0307291711330.4063-100000@luna.rtfmconsult.com> In-Reply-To: <3F261BA1.9070509@jonny.eng.br> References: <20030727192724.GA10869@electra.cse.Buffalo.EDU> <20030729083855.B13802@hermwas.is.co.za> <3F261BA1.9070509@jonny.eng.br>
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On Tue, 29 Jul 2003, [ISO-8859-1] Jo=E3o Carlos Mendes Lu=EDs wrote: Hi Jonny, > Just notice that geographic distribution is not always equivalent > to topological distribution. For example, in South America is much > faster to go anywhere in USA or Europe than another South America > country. Sometime time ago it was even true for different providers in [...] > On the other hand, Brazil has probably lots of free outgoing > bandwidth to other countries, and a primary mirror here would not be a > very bad idea. No, I'm not candidating, I don't have the resources. :-= ( I'd like to add $0.02 here. When i did some research for a paper presented by a couple of my collegues for network topology and drivers in the asia pacific region one of the observations was there are two trends that develo= p for networking. o a 'region' or even country might have all its bandwidth routed via the US - which is great if you work for a US telco but less so for the people buying the links - in general non US sites have to pay for 100% of the cost of the international link.. to send bytes to or via the US. o as 'content' and in particular localized content becomes available then there is a push towards a concept of 'local' peering as this starts making economic sense. this happens faster when internet penetration increases in 'local' areas as clusters of users start wanting to do things where latency starts being an issue. The corollory to this is the dramatic reduction in a lot of places of international bandwidth which is encouraging (in the short term) the use of international pipes rather than local ones. So right now it might be that one south american country can talk to another only via the US but i would predict this is less likely 1-2 or 5 years from now and it will be better to plan for having a south american 'tier1/primary' in the future to sync from. regards, -jason
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