Re: Global Crossing Contact / BGP and SONET interaction question
Randy Epstein wrote: I don't have an answer to the root cause of your problem, and I'm not looking for a discussion on route dampening (there are enough debates onthis issue to make your head spin), but may I suggest you raise your hold timers to prevent your BGP sessions from going down on short disturbances as these? From what I can tell the disturbances are less than a second in duration. It doesn't appear that this is a hold-timer issue, although I would like GX to set it at something higher than 90 seconds (mine is already at a higher value- but the lower value wins during negotiation).I really suspect that either a) GX has some semi-weird configuration where the SONET ring switching from the normal to the protect path and back causes BGP to reset on the border router I'm attached to or b) There is a separate issue which is causing BGP to flap. Or of course, something else completely different. Unfortunately, I haven't been able to figure out how to talk to anyone at GX which actually has access to the routers and knows anything about BGP. -forrest
Re: Eurid suspends more than 74,000 .eu domain names
On Tuesday 25 Jul 2006 18:04, Henry Linneweh wrote: I think this operationally impact some people http://www.computerworld.com/action/article.do?command=viewArticleBasicarticleId=9001972 Anyone else note the irony that the domain names were registered through domainsbyproxy.com so he is complaining about his own customers. People willing to put up with Eurid burocracy three times over deserve all the domain names their own money can buy.
Re: Eurid suspends more than 74,000 .eu domain names
On 7/26/06, Simon Waters [EMAIL PROTECTED] wrote: http://www.computerworld.com/action/article.do?command=viewArticleBasicarticleId=9001972 Anyone else note the irony that the domain names were registered through domainsbyproxy.com so he is complaining about his own customers. Well ok - if his service gets abused he has every right to complain about that, and to help turf them as and when they turn up. He's got sound views on domain kiting, that man .. -- Suresh Ramasubramanian ([EMAIL PROTECTED])
Re: Global Crossing Contact / BGP and SONET interaction question
* [EMAIL PROTECTED] (Randy Epstein) [Wed 26 Jul 2006, 07:44 CEST]: Recently my BGP session has started flapping on the GX circuit... It looks something like this: Jul 21 21:33:32.703 UTC: %BGP-5-ADJCHANGE: neighbor 67.17.168.73 Up There are no other log entries during the periods when this occur. Unfortunately this causes enough prefix flaps that any prefixes which are preferred through GX are damped for like a half hour by certain providers as my BGP routes get added/withdrawn through the GX link. I don't have an answer to the root cause of your problem, and I'm not looking for a discussion on route dampening (there are enough debates on this issue to make your head spin), but may I suggest you raise your hold timers to prevent your BGP sessions from going down on short disturbances as these? Wrong error condition - hold timer isn't triggered when the interface for a directly connected neighbor goes down. You'll want Global Crossing to configure a hold-timer on their Juniper or a carrier-delay on their Cisco router. Or configure no bgp fast-external-fallover but that has more side effects. -- Niels.
Re: Global Crossing Contact / BGP and SONET interaction question
On 26 Jul 2006, at 08:29, Forrest W Christian wrote: Randy Epstein wrote: I don't have an answer to the root cause of your problem, and I'm not looking for a discussion on route dampening (there are enough debates onthis issue to make your head spin), but may I suggest you raise your hold timers to prevent your BGP sessions from going down on short disturbances as these? From what I can tell the disturbances are less than a second in duration. It doesn't appear that this is a hold-timer issue, although I would like GX to set it at something higher than 90 seconds (mine is already at a higher value- but the lower value wins during negotiation).I really suspect that either a) GX has some semi-weird configuration where the SONET ring switching from the normal to the protect path and back causes BGP to reset on the border router I'm attached to or b) There is a separate issue which is causing BGP to flap. Or of course, something else completely different. Unfortunately, I haven't been able to figure out how to talk to anyone at GX which actually has access to the routers and knows anything about BGP. -forrest The timing of protection switching on a SONET ring is of completely the wrong order to upset a BGP session. From memory there's a designed in upper bound of 200 mS from fault to fully restored with typical values being more like 50 mS. One possibility that occurs to me is that the A end here might be using a router with a SONET card, and the router software is propagating a SONET event through the stack causing BGP to react to an event it wouldn't even see on a physically separate SONET ADM. That is pure speculation though.
RE: Global Crossing Contact / BGP and SONET interaction question
You should be able to tell from (cisco speak) show controller pos a/b The counters should be increasing if there are any issues with the line or the path Make sure both ends sync from the line (as it's a syncronous link). A path switch event with won't impact BGP, if it did the entire internet would be a constant flap. Typically path switches are 50ms in the metro and not much longer on long distance (or is done at the optical layer). It also could be that the protection may need to be uni-directional. Make sure you set scramble on the link as some multiplexers still have inband traffic signal issues that IP traffic can trigger. Regards, Neil.
RE: Hot weather and power outages continue
On Mon, 24 Jul 2006, William S. Duncanson wrote: Suprisingly, my cable TV goes out as well when the power goes, so it might just be more than the CMTS that's going out. It's your neighborhood distribution amp going out, or possibly a smaller amp between the neighborhood amp and your house (...or even one at your house...). With the Digital Phone and similar rollouts, though, they've gotten better about putting battery backups on at least the neighborhood amps...they realized it was pointless to put batteries in the MTA if they don't put them on the amps..;) ...d --- david raistrickhttp://www.netmeister.org/news/learn2quote.html [EMAIL PROTECTED] http://www.expita.com/nomime.html
Yahoo contact for dns issue
Hello, Does anyone have a contact at Yahoo that could help with a dns issue on Yahoo's end? I'm getting no where with thir Technical Support number. TIA -- Paul Norton Server Support neoverve neo - new and different. verve - energy and enthusiasm in the expression of ideas. 760.744.7845 800.500.6580 [EMAIL PROTECTED] www.neoverve.com
