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Re: comcast routing issue question
On Thu, Nov 30, 2006 at 12:28:30AM -0500, Jim Popovitch wrote: > > On Thu, 2006-11-30 at 00:06 -0500, Jim Popovitch wrote: > > Question: What could cause the first trace below to succeed, but the > > second trace to fail? > > [snip] > > Taking the 188.8.131.52/28 subnet a bit further, .36 drops at 184.108.40.206 > > but .37 - .39 make it. .40 drops at 220.127.116.11, but .41 makes it. > > > > Crazy. > > Btw, the problem has now been resolved, however I'm still curious as to > what scenario could have caused that. Perhaps CEF-style load balancing over multiple paths, with one of them down and not properly failing over? Per-flow balancing would decide which path to use based on source & target IP. > -Jim P. > -- Jordan.