Re: Single IP routing problems through Level3

2008-06-15 Thread Matthew Kaufman
Matt Palmer wrote: A multiple-link bundle which is load balanced by source/destination pair with an undetected dud link? I hadn't thought of that, but it does make an *awful* lot of sense I've also seen interesting OSPF misconfigurations that resulted in a router doing path-wise load bala

Re: Single IP routing problems through Level3

2008-06-15 Thread Tim Peiffer
Matt Palmer wrote: We're seeing some really weird issues with connections that go through / to Level3 IP space. Basically, certain "pairs" of IPs (particular L3 IPs coupled with particular IPs of ours) have dodgy/nonexistent connectivity, but if you change the IP at either end everything's hunk

Re: Single IP routing problems through Level3

2008-06-15 Thread Jon Wolberg
rom: "Matt Palmer" <[EMAIL PROTECTED]> To: nanog@nanog.org Sent: Sunday, June 15, 2008 10:39:56 AM GMT -05:00 US/Canada Eastern Subject: Re: Single IP routing problems through Level3 On Sun, Jun 15, 2008 at 11:12:25AM -0300, Rubens Kuhl Jr. wrote: > 1) I've seen this behavio

Re: Single IP routing problems through Level3

2008-06-15 Thread Matt Palmer
On Sun, Jun 15, 2008 at 11:12:25AM -0300, Rubens Kuhl Jr. wrote: > 1) I've seen this behavior before; you are not alone in the universe. Thank $DEITY for that. > 2) Most likely there is a balanced channel on the path, either L3 or > L2, and one of the links in the bundle is dead but has not bee

Re: Single IP routing problems through Level3

2008-06-15 Thread Rubens Kuhl Jr.
1) I've seen this behavior before; you are not alone in the universe. 2) Most likely there is a balanced channel on the path, either L3 or L2, and one of the links in the bundle is dead but has not been detected as such. Rubens On Sun, Jun 15, 2008 at 11:01 AM, Matt Palmer <[EMAIL PROTECTED]> w

Single IP routing problems through Level3

2008-06-15 Thread Matt Palmer
We're seeing some really weird issues with connections that go through / to Level3 IP space. Basically, certain "pairs" of IPs (particular L3 IPs coupled with particular IPs of ours) have dodgy/nonexistent connectivity, but if you change the IP at either end everything's hunky dory. I've sniffed