Per Eric, It appears that someone in Europe AS Path Padded their netblock advertisement more then 255 times.
Best news is the problem was fixed as the source earlier today. I think it was only causing problems for an hour or two. If this is caused by Cisco bug CSCdr54230 then fair number of operators out there running old firmware. The bug caused the length of those long AS-Paths to be mis-calculated. When the path was advertised to a BGP neighbor it passed the AS-Path with incorrect length. The neighbor would detected this as corruption and terminate the BGP session. So if your BGP upstream is using a old firmware and passed you this bogus path data your BGP session with them would flap. -Eric -----Original Message----- From: wireless-boun...@wispa.org [mailto:wireless-boun...@wispa.org] On Behalf Of John McDowell Sent: Monday, February 16, 2009 12:55 PM To: WISPA General List Subject: Re: [WISPA] make sure you are filtering AS48438 right now We're running Imagestream, no BGP though...think this would affect us? On Mon, Feb 16, 2009 at 11:49 AM, Dylan Bouterse <dy...@corp.power1.com>wrote: > We're getting off Cisco soon too. Moving to Juniper, maybe sooner than > later now! > > Dylan > > -----Original Message----- > From: wireless-boun...@wispa.org [mailto:wireless-boun...@wispa.org] > On Behalf Of Brad Belton > Sent: Monday, February 16, 2009 12:33 PM > To: 'WISPA General List' > Subject: Re: [WISPA] make sure you are filtering AS48438 right now > > So far we haven't seen any adverse effects, but we're not running BGP > with Cisco routers. > > Best, > > > Brad > > > -----Original Message----- > From: wireless-boun...@wispa.org [mailto:wireless-boun...@wispa.org] > On Behalf Of Matt Liotta > Sent: Monday, February 16, 2009 11:27 AM > To: WISPA General List > Subject: Re: [WISPA] make sure you are filtering AS48438 right now > > That AS was sending corrupted AS PATHs, which among other things has > been causing significant amounts of route flaps due to Cisco bug > CSCdr54230. Ciscos effected are losing their BGP session when they > encounter the AS PATH. Upstreams like us have busy routers because of > all the flaps. > > The community is filtering the AS right now pending resolution. > > -Matt > > On Feb 16, 2009, at 12:22 PM, Dylan Bouterse wrote: > > > I just had some BGP issues with one of my peers. Is this related you > > think? Please expand on the reason for the email. > > > > Dylan > > > > -----Original Message----- > > From: wireless-boun...@wispa.org [mailto:wireless-boun...@wispa.org] > > On > > Behalf Of Matt Liotta > > Sent: Monday, February 16, 2009 12:18 PM > > To: WISPA General List > > Subject: [WISPA] make sure you are filtering AS48438 right now > > > > > > > > > > > ---------------------------------------------------------------------- > -- > > -------- > > WISPA Wants You! 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Join today! > http://signup.wispa.org/ > ---------------------------------------------------------------------- > -- > -------- > > WISPA Wireless List: wireless@wispa.org > > Subscribe/Unsubscribe: > http://lists.wispa.org/mailman/listinfo/wireless > > Archives: http://lists.wispa.org/pipermail/wireless/ > > No virus found in this incoming message. > Checked by AVG - www.avg.com > Version: 8.0.233 / Virus Database: 270.10.18/1936 - Release Date: > 02/05/09 11:34:00 > > > > ---------------------------------------------------------------------- > ---------- > WISPA Wants You! Join today! > http://signup.wispa.org/ > > ---------------------------------------------------------------------- > ---------- > > WISPA Wireless List: wireless@wispa.org > > Subscribe/Unsubscribe: > http://lists.wispa.org/mailman/listinfo/wireless > > Archives: http://lists.wispa.org/pipermail/wireless/ > -- John M. McDowell Boonlink Communications 307 Grand Ave NW Fort Payne, AL 35967 256.844.9932 j...@boonlink.com www.boonlink.com This message contains information which may be confidential and privileged. Unless you are the addressee (or authorized to receive for the addressee), you may not use, copy, re-transmit, or disclose to anyone the message or any information contained in the message. If you have received the message in error, please advise the sender by reply e-mail j...@boonlink.com, and delete the message. E-mail communication is highly susceptible to spoofing, spamming, and other tampering, some of which may be harmful to your computer. If you are concerned about the authenticity of the message or the source, please contact the sender directly. ---------------------------------------------------------------------------- ---- WISPA Wants You! 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