mailing list archives
Re: Time Warner Cable issues in Ohio ?
From: "Jonas Frey (Probe Networks)" <jf () probe-networks de>
Date: Wed, 29 Feb 2012 00:38:01 +0100
Sounds very much like an issue with a link aggregation.
Seen this a couple of times with various carriers...apparently
monitoring lag's isnt a top priority nowadays.
Try to find out which hop is causing the problems (do multiple
traceroute's or use mtr on affected and unaffected servers) and drop TWC
Am Dienstag, den 28.02.2012, 18:22 -0500 schrieb Randy Carpenter:
We're seeing some strange issues with our fiber connection to TWC in Ohio. Intermittent packet loss to/from some IPs.
It gets as specific as from a certain IP outside our network, packets to a.b.c.10 are fine, but pings to a.b.c.50
(same subnet of same netblock) lose ~75% of the packets.
Likewise, from one of our IPs, connections are fine to a particular remote host, but not to another host on the same
Connections to/from some other IPs (and some whole networks) are totally fine.
It almost seems that some piece of gear somewhere is barfing on packets that have a particular set of bits in the
source and/or destination address.
We have manually failed over to a backup connection, and are 100% fine now.
I just want to see if anyone has seen anything similar, or has any info. I am on hold now waiting for someone at TWC.