Different boxes use different mechanisms to determine availability.
One of them pings something like your top 10,000 destinations via each upstream every second, so then it knows what's up. ----- Mike Hammett Intelligent Computing Solutions Midwest Internet Exchange The Brothers WISP ----- Original Message ----- From: "Nate Burke" <[email protected]> To: "AnimalFarm Microwave Users Group" <[email protected]> Sent: Tuesday, November 15, 2022 4:00:31 PM Subject: Re: [AFMUG] Protecting Upstream Connections Wouldn't there have to be something on the other end to determine if traffic can get to you? I was still taking some traffic, just Google, and I'm guessing some other CDN traffic couldn't get to me. Which to Eyeball networks means 'the internet is down' On 11/15/2022 3:44 PM, Mike Hammett wrote: You can have it pull the BGP advertisement or set no export or prepend a bunch or other things ranging from suggestion to absolute. In this case, if the optimizer noticed that you weren't available from a given connection, it could have (depending on the optimizer), set no export, then if the reachability issues persist after X minutes, drop the session. ----- Mike Hammett Intelligent Computing Solutions Midwest Internet Exchange The Brothers WISP ----- Original Message ----- From: "TJ Trout" <[email protected]> To: "AnimalFarm Microwave Users Group" <[email protected]> Sent: Tuesday, November 15, 2022 3:21:40 PM Subject: Re: [AFMUG] Protecting Upstream Connections Is there any benefit for an eyeball network to use route optimization given you can really only control egress via bgp? On Tue, Nov 15, 2022, 12:26 PM Nate Burke < [email protected] > wrote: <blockquote> I rarely have issues with the Windstream circuit, but it is totally dealing with a Telco. Front line can only open the ticket, and go through the whole list of questions that have been in place since troubleshooting a T1 Line, or before. I always like 'Are we authorized to do intrusive testing' This is only the 2nd time this has happened. Last time was 4 or 5 years ago, just a week or 2 after we turned up the circuit, so I wrote that off to a turnup config they messed up somewhere. On 11/15/2022 2:16 PM, Larry Smith wrote: > In the past when we had similar problems with Windstream I found > that often (about 75 percent of the time) I could hard reset the BGP > session locally and Windstream would pickup after the reset and > route correctly. The other 25 percent, like you, I just had to down > the BGP session with them entirely and wait for the routes to clear. > A few of those times I even called our 24/hr support number to ask > if they could clear or reset the session from their side and was > inevitably told "we will look into it" (not)... > -- AF mailing list [email protected] http://af.afmug.com/mailman/listinfo/af_af.afmug.com -- AF mailing list [email protected] http://af.afmug.com/mailman/listinfo/af_af.afmug.com </blockquote> -- AF mailing list [email protected] http://af.afmug.com/mailman/listinfo/af_af.afmug.com
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