Re: Time Warner Cable issues in Ohio ?

["Jonas Frey (Probe Networks)" <jf () probe-networks de>]

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
a mail.


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 
> network.
>
> 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.
>
> thanks,
> -Randy