"Weird" Traffic about 10 hours ago

Tue May 1 14:44:52 UTC 2018

My extremely un-scientific reply:

I make a lot of connections from Washington State to Virginia every day.

Around 5 PM PDT yesterday, I got booted and had trouble re-connecting for
about 10 minutes.  I figured it was just me, but then a handful of sites
wouldn't load for me while others had no trouble.  I started to do some
traceroutes and they all succeeded, then I noticed my connections to
Virginia were restored.

I don't think it lasted for more than 10 minutes whatever it was.

-A

On Tue, May 1, 2018 at 6:31 AM Mike Hammett <nanog at ics-il.net> wrote:

> This is going to be extremely scientific. </sarcasm>
>
> Did anyone else see "weird" stuff going on about 10 hours ago, about 6 PM
> Central on April 30th? I'm based in the Chicago area and have a large
> client on the east coast. I saw about a 25% drop in traffic for a half hour
> to an hour.
> Another Midwestern ISP also saw about 25% drops on two different upstream
> connections.
> A friend of mine runs an ISP in Virginia. He reported a dip in traffic
> (though didn't report how much of a drop), but also pings and IPSEC\L2TP
> worked, but couldn't SSH or do other activities.
> That friend reported another ISP in Virginia had problems at that same
> time.
> An ISP in Cyprus reported issues at that time. I'm looking to firm up what
> kind of issues and verify the time.
>
>
> Yet other ISPs report no problems at all. Smooth ramps on traffic graphs
> as one would expect at the beginning of prime time.
>
>
> I thought maybe "something" happened in Ashburn (fiber cut, DWDM card
> failure, etc.) as my client has a wave from the east coast to me in
> Chicago, but then the Midwestern ISP shouldn't have any dependency on
> Ashburn, given Chicago and Dallas.
> Then there's the guy in Cyprus, which shouldn't have any bearing on
> anything that happens over here in the States.
>
> I thought maybe it was an epic failure at one of the CDNs or other content
> networks, but then that wouldn't impact SSH or other management activities.
>
>
> Anyone else have any other data to help figure out what caused this?
>
>
>
>
> -----
> Mike Hammett
> Intelligent Computing Solutions
> http://www.ics-il.com
>
> Midwest-IX
> http://www.midwest-ix.com
>