> From: tech-boun...@lists.lopsa.org [mailto:tech-boun...@lists.lopsa.org] > On Behalf Of Ross West > > Almost all network circuit load balancing systems use some kind of > (src/dst) hash in order to attempt to keep end-to-end packet ordering > the same. What the hash is built upon (ip, tcp/udp port, etc) is up to > the local admin. > > So if one path is borked and sending packets to a blackhole (but the > dynamic routing doesn't detect that), then you'll see things like what > you mention.
Thanks - Since this exactly explains the observed behavior, I'm going to declare it as probably the answer. You get points. ;-) The borked network segment could have been inside amazon, or anywhere between amazon & my colo. It could have been completely borked - and occasionally the routing protocols would rebalance and route around it - or it could have actually been intermittent, but consistently routed Host B's packets onto the intermittent link. _______________________________________________ Tech mailing list Tech@lists.lopsa.org https://lists.lopsa.org/cgi-bin/mailman/listinfo/tech This list provided by the League of Professional System Administrators http://lopsa.org/
