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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
Sorry, I thought we were discussing all multi-homing. Your example doesn't help the business whose ISP suffers a business failure (such as DSLnetworks, Flashpoint, et al), only the case where the access provider fails SLA. To put it bluntly, a single circuit, to a single business, while annoying, doesn't cause wide-spread outages when it fails. It is thus, the lesser-order case. The case I thought was under discussion is when an ISP dumps something on the order of 10^3 or more customers when they fail. I understand that NorthPoint abandoned ~100,000 customers when they sold their backbone to AT&T and AT&T didn't pick up the subscribers. I will wager that many of them were /24s. DSLnetworks had over 700 Covad customers, FlashPoint was larger. For various definitions of "wide-spread", this is a much larger issue than a broken copper-pair. I suspect that it also has a much higher likelyhood of occurance. Especially, in the current business shakeout. Guess what ... it won't stop. This sort of problem will be with us forever. We should find a solution ... someday ... ya think? Business failures are on one side of the problem and CIDR aggregation is on the other. > -----Original Message----- > From: RJ Atkinson [mailto:[email protected]] > Sent: Tuesday, April 03, 2001 11:26 AM > To: Roeland Meyer > Cc: [email protected] > Subject: RE: Faster 'Net growth rate raises fears about routers > > > At 13:55 03/04/01, Roeland Meyer wrote: > > >The problem with this, if done, is that we back right into > the other problem > >of prefix filtering. > > No. These are separate tail circuits to separate POPs > of the same ISP. So that one ISP only needs to advertise its > fully aggregated prefix. So the problem you postulate does > not arise in this particular situation. > > > What is the other ISP to do? > > You didn't read closely enough. 2 tail circuits, > 2 POPs, but only 1 ISP was the scenario outlined. It works > quite well, provided one picks the ISP thoughtfully. > > Ran > >
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