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North American Network Operators Group Date Prev | Date Next | Date Index | Thread Index | Author Index | Historical Re: Faster 'Net growth rate raises fears about routers
On Tue, Apr 03, 2001 at 07:51:41PM -0400, RJ Atkinson wrote: > At 18:35 03/04/01, Jesper Skriver wrote: > > >Don't know how the world looks like in the US, but here a SDH/Sonet > >provider will never guarentee diversity of his/her circuit to that > >of a different provider, > > Interesting, though they do guarantee that to NATO > circuits. The company I work for, can and do provide diverse circuits, but they won't guarentee diversity between that and one of a different provider, the reasoning behind this is, that one cannot know if/when the other provider reroute their circuit, so that there is no diversity any more. > smd, are you able to get diverse local paths over there ? > > >often the end user can be almost sure that at least > >the last few km will be in the same duct, as the local communities > >demand that the providers cooperation when digging fiber into the > >ground... > > Obviously there is a concern if everyone is in the same > duct, but if one builds with rings like sensible engineers, SDH/Sonet protection removes quite a bit of the problem yes, but often it's usefull to get 2 circuits with diverse routing (and without protection) instead of a single with protection, and the price is usually in the same order for both. We always get multiple circuits with diverse routing instead of a single circuit with protection if we can. /Jesper -- Jesper Skriver, jesper(at)skriver(dot)dk - CCIE #5456 Work: Network manager @ AS3292 (Tele Danmark DataNetworks) Private: FreeBSD committer @ AS2109 (A much smaller network ;-) One Unix to rule them all, One Resolver to find them, One IP to bring them all and in the zone to bind them.
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