North American Network Operators Group Date Prev | Date Next | Date Index | Thread Index | Author Index | Historical Re: Is Qwest leaking routes?
On Mon, 26 Oct 1998, Sean Donelan wrote: > >Yes, it appears Qwest was leaking routes, but they are fixing it... Am I just silly to assume that it shouldn't take so long for such well-funded companies to communicate with each other? AS286 is EUNet, right? This all started sometime yesterday... I still see this: BGP routing table entry for 206.97.128.0/19, version 10233204 Paths: (1 available, best #1) 3847 1239 1800 209 286 3561 207.240.48.45 from 207.240.48.45 (207.240.48.1) Origin IGP, localpref 100, valid, external, best This is a C&W customer. Now I'm single-homed, so I'm no BGP expert, but I think this is telling me that EUNet is claiming to be in the path here. How can it possibly take so long to work something like this out? Charles > Its always so much fun to watch billion dollar companies dance around > the issues. > > Qwest's spokesperson could not confirm nor deny any problem, and > even if such a problem existed considered it a confidential matter. > > On the other hand, C&W received top billing on the news story, probally > because they were one of the few providers to actually give any information > to the public and reporters. Grrr. I'm not a big fan of C&W, what > are your peering requirements this week?; but I don't like to see > providers getting zinged for being open about network issues. > > However the root cause is a very old issue. It takes two to create > a route leak. One to announce the erroronous route, and one to listen > to the erronous route. The proper router filters on either side of > the connection would mitigate the problem. Everyone knows the basic > issues. 1) cisco routers can't hold the extremely large access-lists > required to fully filter peer-to-peer connections between large providers. > 2) some providers don't make available the information needed to > accurately verify their routing information. 3) review the archives. > -- > Sean Donelan, Data Research Associates, Inc, St. Louis, MO > Affiliation given for identification not representation > =-----------------= = | Charles Sprickman Internet Channel | | INCH System Administration Team (212)243-5200 | | [email protected] [email protected] | = =----------------=
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