Verizon Issues? East Coast US

Chris Tracy ctracy at
Tue Mar 1 10:47:39 CST 2011

>> Seeing some packet loss via Cogent.
>> seems to be lighting up.
> I'm noticing it too.  POP in Grand Rapids, circuit to Detroit.  Packet loss,
> but no total loss of connectivity.

Interesting.  I began to notice trouble reaching google about a week ago from 2 different east-cost Verizon FiOS lines -- one business and one residential -- but my problem appears to be congestion at the AS701 <> AS15169 border.  I'm not noticing any loss across AS701.

These problems began around 9am Eastern on Saturday Feb 19th -- see attached smokeping graph.  You can see the diurnal pattern in the loss -- packet loss peaks between 9a-4p ET.  Of course, I can get without any loss at all via my HE tunnel!

In both cases, mtr shows ~50% loss beginning at (, the first hop in AS15169.  It's clear that I must be losing more ICMP than TCP packets given that google webpages come up fairly quickly, but youtube videos hang ever since this started.

Anybody else seeing this?


Chris Tracy <ctracy at>
Energy Sciences Network (ESnet)
Lawrence Berkeley National Laboratory

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