Re: akamai abnormal spike

[Mike Hammett <nanog () ics-il net>]

Several of my WISP colleagues have noticed this behavior (CDN sending way more traffic than the customer's pipe can 
handle) from (I believe) multiple CDNs. Not sure if it is intention on behalf of the CDN or an error, but it has been 
on-going for several months if not years. 




----- 
Mike Hammett 
Intelligent Computing Solutions 
http://www.ics-il.com 



Midwest Internet Exchange 
http://www.midwest-ix.com 


----- Original Message -----

From: "Blake Hudson" <blake () ispn net> 
To: nanog () nanog org 
Sent: Monday, July 18, 2016 8:49:21 AM 
Subject: Re: akamai abnormal spike 

We noticed that on the 12th-14th we had multiple subscribers on ~5Mbps 
subscription rates that were being sent ~50Mbps of data sourced from TCP 
port 80 (apparently HTTP) from Limelight Networks' servers. The data did 
appear to be user requested, still not sure why TCP didn't throttle the 
data rate appropriately. The 50Mbps was distributed across multiple LLNW 
servers. Makes me wonder if the customer was requesting one batch of 
data and multiple servers were responding. 

The issue cleared up on its own and I never was able to perform a full 
packet capture to investigate. I have not noticed the same behavior from 
Akamai servers. 

Clayton Zekelman wrote on 7/18/2016 8:26 AM: 
> We noticed on the 12th and 13th there was a significant up tick in 
> traffic served from our Akamai servers as well. 
>
>
> At 05:37 PM 13/07/2016, eric c wrote: 
> > Good afternoon, 
> >
> > Has anyone notice any abnormal spike in Akamai trafic in the last 24-48 
> > hours compared to other days. I know it was black tuesday yesterday but 
> > traffic from last month didn't even come close to what we saw from 
> > Akamai. 
> >
> > We have some caching servers and even notice a spike to them as well. 
> >
> > Limelight even showed up on our network. 
> >
> > thanks 
> > eric