May 2006 - NANOG - lists.nanog.org

RE: Strange network problem accessing Ebay and versiontracker websites
by Shane Owens 03 May '06

03 May '06

We don't use PPOE. Our network setup is DSL Modem -->ATM-->BLC (Occam)-->IP--->Router--->Transit provider. Basically we turn on the service and it's always running. We don't require any authentication or do any subscriber management on our users. I will start looking into the MTU issue though. Shane -----Original Message----- From: owner-nanog(a)merit.edu [mailto:owner-nanog@merit.edu] On Behalf Of Justin M. Streiner Sent: Wednesday, May 03, 2006 4:26 PM To: nanog(a)merit.edu Subject: Re: Strange network problem accessing Ebay and versiontracker websites On Wed, 3 May 2006, Shane Owens wrote: > Can anyone give me any suggestions as to what routes to take to > troubleshoot this? Logic tell me that is I have reach ability and one > browser work but another doesn't it's a software problem with either > the browser or the site, but being able to take the same machine to > another network and have it work points to a whole different problem. > Could this be a MTU issue? It sounds like that is a possibility. Are the DSL users being served by PPPoE? Setting the IP MTU on your PPPoE access template, depending on whose gear you're using to provide the servide provider end of your DSL services, to 1492 may help. jms

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Strange network problem accessing Ebay and versiontracker websites
by Shane Owens 03 May '06

03 May '06

All, I know this probably isn't the best forum for this question but I'd like to rule out a network problem before I tell a customer he has a PC problem. I run a small CLEC network that is single homed to BTN for transit. I have 3 sites all interconnected via DS3's and provide DSL services from each site. From anywhere on my network we have problem with Ebay and versiontracker.com but only on certain browsers. IE on a windows machine can access these sites without any problems, but Firefox on the same machine cannot open the websites (Ebay can be opened with addblocking software installed). On a Mac the only browser that works for these sites is Opera. With this knowledge I would say it is something with the coding on the website, but if I take the same machine and connect it to another network other than mine (Verizon, SBC and local municipal wifi have been tested) everything works fine. Can anyone give me any suggestions as to what routes to take to troubleshoot this? Logic tell me that is I have reach ability and one browser work but another doesn't it's a software problem with either the browser or the site, but being able to take the same machine to another network and have it work points to a whole different problem. Could this be a MTU issue? Shane Owens DNA Communications Inc 601 1st Ave Rochelle, IL 61068 work (815)562-4290 ext 201 mobile (815)793-3822

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RE: AOL 421 errors
by David Hubbard 03 May '06

03 May '06

From: owner-nanog(a)merit.edu [mailto:owner-nanog@merit.edu] On > > > We've noticed a surge in 421 e-mail errors from AOL. > > Message soft bounced for '###(a)aol.com', '4.3.2 - Not > accepting messages at > this time ('421', [': (DYN:T1) > http://postmaster.info.aol.com/errors/421dynt1.html', 'SERVICE NOT > AVAILABLE']) []' > > It seems as though they've tightened down their policies. > We're pretty good at preventing spam with our IronPort > anti-spam gateways and internal policies. > > We've also subscribed to their FBL notification service. > I'm surprised at the types of messages AOL customers consider > as spam. Anything and everything: university admission acceptance > notices; instructor class assignments; photos from friends; etc. > AOL users report receipts for things they have bought or letters from their kids as spam, or just use the spam button instead of delete. We have a feedback loop with them on a netblock we moved off of about 24 months ago; I've emailed their postmaster at least 12 times with no response and no change. I've called and they refuse to talk and say I must email or use the form on the postmaster site to be removed; no effect. David

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CALEA Watch: ISP's Get to Pick Up the Tab
by Fergie 03 May '06

03 May '06

Just wanted to bring your attention to an FCC decsion today that will most likely touch your operational lives in a big way. [snip] Broadband providers and Internet phone companies will have to pick up the tab for the cost of building in mandatory wiretap access for police surveillance, federal regulators ruled Wednesday. [snip] More: http://news.com.com/2100-1028_3-6067971.html Now, back to your regularly scheduled programming. Cheers, - ferg -- "Fergie", a.k.a. Paul Ferguson Engineering Architecture for the Internet fergdawg(a)netzero.net or fergdawg(a)sbcglobal.net ferg's tech blog: http://fergdawg.blogspot.com/

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RE: Tier 2 - Lease?
by Berkman, Scott 03 May '06

03 May '06

Interesting to notice someone (perhaps from this list?) has removed Cogent from the T1 list. They did however leave http://en.wikipedia.org/wiki/Cogent alone. -Scott -----Original Message----- From: owner-nanog(a)merit.edu [mailto:owner-nanog@merit.edu] On Behalf Of Martin Hannigan Sent: Wednesday, May 03, 2006 10:07 AM To: Richard A Steenbergen; Robert Sherrard Cc: nanog list Subject: Re: Tier 2 - Lease? At 01:58 AM 5/3/2006, Richard A Steenbergen wrote: >On Tue, May 02, 2006 at 10:38:22PM -0700, Robert Sherrard wrote: > > > > What make a provider a tier 2, versus a tier 1 provider... > > > > Is it possible to determine who a tier 2 (i.e. Cogent) leases fiber from? > >It has absolutely nothing to do with fiber. > >http://en.wikipedia.org/wiki/Tier_1_carrier > >As of this exact moment that I'm posting, that article is actually >reasonably accurate. Of course I'm sure in 5 minutes 100 people will be >updating it to include their favorite not-really-a-tier-1 carrier. :) Someone added Cogent as a Tier 1, and there are others missing so I'd ignore the "who" is a tier 1 portion. -M< -- Martin Hannigan (c) 617-388-2663 Renesys Corporation (w) 617-395-8574 Member of Technical Staff Network Operations hannigan(a)renesys.com

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Colo in UK and Austraila.
by Robert Sherrard 03 May '06

03 May '06

Can anyone recommend neutral facilities in both the UK and Australia? Rob

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BGP data needed
by Ricardo V. Oliveira 03 May '06

03 May '06

Hi all, I was wondering where I can find recent BGP data in the form of BGP updates+RIBs besides RouteViews and RIPE? Thanks, --Ricardo

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Re: Tier 2 - Lease?
by Valdis.Kletnieks＠vt.edu 03 May '06

03 May '06

On Wed, 03 May 2006 06:32:24 -0000, bmanning(a)vacation.karoshi.com said: > er... a typo? should be... "... we turn ON the phones in their NOC." No, turning the phones *on* is what you do to their help desk. :) Turning off the phones shouldn't inconvenience a NOC that much, since most of the people there probably have cell phones too. It mostly serves as a reminder that their HVAC and electrical feeds are equally under our control. ;) (No, we've never actually had to do it, and the actual business relationship is a *lot* more complicated than that - at one point, looking at the paperwork it wasn't clear if we were buying bandwidth from ourselves, or if we were a *re*seller of our bandwidth to ourselves. ;)

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[Fwd: [Full-disclosure] NISCC DNS Protocol Vulnerability]
by Gadi Evron 01 May '06

01 May '06

As an FYI, seems serious. No real or any details yet. Like a friend said, you can guess where to look for it yourselves but this release is rather useless until more details are given. Attached is the message from FD. Gadi. -- /~\ The Green \ / Ribbon Campaign X Against Purple / \ Ribbons! -- "The Geometry of Shadows", Babylon 5.

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