Hi
-----Original Message----- From: centos-bounces@centos.org [mailto:centos-bounces@centos.org] On Behalf Of Lanny Marcus Sent: Wednesday, August 26, 2009 9:41 PM To: CentOS mailing list Subject: Re: [CentOS] CentOS Mirrors and Adjacent country groups
On 8/25/09, Rainer Duffner rainer@ultra-secure.de wrote:
Am 26.08.2009 um 00:13 schrieb Lanny Marcus:
<snip>
Don't you have peering-points somewhere? Sorry for hijacking this thread...
Rainer: I don't think your reply is OT or hijacking. Good point. I suspect that in the EU, there is a lot of peering between countries, but here in SA, I don't think so.
I suspected that. To illustrate, this: http://www.caida.org/research/topology/as_core_network/pics/ascore-ipv 4-ipv6.200903_poster.pdf is the map I was looking for.
Cool. I downloaded that 4.3 MB file. I suspect we could peer with Panama. I believe like Colombia, they are also quite advanced with regard to telecommunications, and it's close. The city I live in (Cali) is actually much closer to Miami, Florida than Los Angeles, California is. And maybe we could peer with Peru, but that's a long way to our South.
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Afaik it is impossible to deduce from the URL if one node is located nearby or far away. Eventhough as i live in europe, i can register and use a japanese URL.
Secondly, i fond out that ISP do funny tricks with routing: My connection to my next-door-neighbour goes via a transcient node in New-York (high latency).
Only traceroute can give you a clue if a node is local or not. And even then there is a question of available bandwith....
Hans
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J.Witvliet@MINDEF.NL schrieb:
Afaik it is impossible to deduce from the URL if one node is located nearby or far away.
Yeah. That was really just an illustration.
Eventhough as i live in europe, i can register and use a japanese URL.
Secondly, i fond out that ISP do funny tricks with routing: My connection to my next-door-neighbour goes via a transcient node in New-York (high latency).
Only traceroute can give you a clue if a node is local or not.
Yes, that and may some BPG looking-glass. I'm not a routing expert, but AFAIK, you do peering mostly at peering-locations ("meeting-rooms", internet-exchanges). At least, that's what we do here in Europe. You have a fast leased line to such a peering-location and then you can "peer" with everybody you like and have a low hop-count to that ISP.
And even then there is a question of available bandwith....
Well, peering should improve bandwidth and latency. Because local bandwidth should be cheaper to get than international bandwidth.
Rainer
On Mon, Aug 31, 2009 at 4:39 AM, J.Witvliet@mindef.nl wrote:
-----Original Message----- From: centos-bounces@centos.org [mailto:centos-bounces@centos.org] On Behalf Of Lanny Marcus Sent: Wednesday, August 26, 2009 9:41 PM To: CentOS mailing list Subject: Re: [CentOS] CentOS Mirrors and Adjacent country groups
<snip>
Afaik it is impossible to deduce from the URL if one node is located nearby or far away. Eventhough as i live in europe, i can register and use a japanese URL.
Secondly, i fond out that ISP do funny tricks with routing: My connection to my next-door-neighbour goes via a transcient node in New-York (high latency).
To your next door neighbor? Terrible!
Only traceroute can give you a clue if a node is local or not. And even then there is a question of available bandwith....
Agreed
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J.Witvliet＠MINDEF.NL -
Lanny Marcus -
Rainer Duffner