Pfft! Who needs sleep? :) -----Original Message----- From: Af [mailto:[email protected]] On Behalf Of Adam Moffett Sent: Thursday, April 9, 2015 4:11 PM To: [email protected] Subject: Re: [AFMUG] Weird network issue
Yeah I'll see if they're game for that. I would have thought of that myself if they didn't make me get up at 3am :) > Only a quick suggestion.. on the 2811, setup a /30 or something routable for > testing... plugin directly on that port with IP/gateway and DNS - see if > issue is still there. Then at least you know if it's in the ASA or not.... > > > > -----Original Message----- > From: Af [mailto:[email protected]] On Behalf Of Adam Moffett > Sent: Thursday, April 9, 2015 7:06 AM > To: [email protected] > Subject: [AFMUG] Weird network issue > > I have a customer who uses us as a backup path to the internet. They have BGP > sessions with us and another provider, and we just stack a few prepends on > the routes they send us and re-advertise them. > > When their primary connection is out, they report having partial > connectivity. We just had a two hour test window where their primary > connection was shut off on purpose so that we could test. The other provider > and I spent a ton of time going over BGP and routing stuff and finally > concluded, "gee, it should be working." > > After we gave up looking for a routing problem that isn't there, we did some > more basic testing and really the only thing I can conclude definitely > doesn't work when they fail over to us is DNS. Using nslookup they get no > response from any DNS servers. > > They have a Cisco 2811 running BGP, but that connects to an ASA, and > everything on their LAN is behind the ASA. > > I asked for copies of the configs on the 2811 and the ASA, but I'm not even > sure what I'm looking for yet. Any brilliant ideas? >
