[163276] in North American Network Operators' Group
Headscratcher of the week
daemon@ATHENA.MIT.EDU (Mike)
Fri May 31 18:25:35 2013
Date: Fri, 31 May 2013 15:25:22 -0700
From: Mike <mike-nanog@tiedyenetworks.com>
To: NANOG list <nanog@nanog.org>
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
Gang,
In the interest of sharing 'the weird stuff' which makes the job of
being an operator ... uh, fun? is that the right word?..., I would like
to present the following two smokeping latency/packetloss plots, which
are by far the weirdest I have ever seen.
These plots are from our smokeping host out to a customer location. The
customer is connected via DSL and they run PPPoE over it to connect with
our access concentrator. There is about 5 physical insfastructure hops
between the host and customer; The switch, the BRAS, the Switch again,
and then directly to the DSLAM and then customer on the end.
The 10 day plot:
http://picpaste.com/10_Day_graph-YV3IdvRV.png
The 30 hour plot:
http://picpaste.com/30_hour_graph-DrwzfhYJ.png
How can you possibly have consistent increase in latency like that? I'd
love to hear theories (or offers of beer, your choice!).
Happy friday all!
Mike-
