With all the frapping ARP requests that are broadcast (and therefore being sent out by the head end) I'm not surprised the control plane is swamped :P<div><br></div><div>Sean<br><br><div class="gmail_quote">On Tue, Oct 19, 2010 at 11:17 AM, Adam Thompson <span dir="ltr"><<a href="mailto:athompso@athompso.net">athompso@athompso.net</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;">If MTR shows loss at hop 1 but *not* at hop 2, that's just their router ignoring your ICMP packets and doesn't actually indicate packet loss.<br>
<br>
*sigh* I can't believe I'm defending Shaw...<br>
<font color="#888888"><br>
-Adam<br>
</font><div class="im"><br>
-----Original Message-----<br>
From: John Lange <<a href="mailto:john@johnlange.ca">john@johnlange.ca</a>><br>
Sender: <a href="mailto:roundtable-bounces@muug.mb.ca">roundtable-bounces@muug.mb.ca</a><br>
</div><div class="im">Date: Tue, 19 Oct 2010 11:14:16<br>
To: Continuation of Round Table discussion<<a href="mailto:roundtable@muug.mb.ca">roundtable@muug.mb.ca</a>><br>
Reply-To: Continuation of Round Table discussion <<a href="mailto:roundtable@muug.mb.ca">roundtable@muug.mb.ca</a>><br>
Subject: Re: [RndTbl] Shaw packet loss<br>
<br>
</div><div><div></div><div class="h5">Just for reference; I use mtr for testing this.<br>
<br>
Here is the command line. As you can see, I've set a very aggressive<br>
packet rate (20/second).<br>
<br>
# mtr -r -w -c 500 -n -i 0.05 <a href="http://www.google.ca" target="_blank">www.google.ca</a><br>
<br>
I actually stick it in a loop so I can keep it running and see periodic results:<br>
<br>
# while true ; do date ; mtr -r -w -c 500 -n -i 0.05 <a href="http://www.google.ca" target="_blank">www.google.ca</a> ; done<br>
<br>
When I see loss, it's always at the first hop yet it doesn't seem to<br>
matter which gateway it is. These are all Shaw business customers so<br>
may not be affecting residential.<br>
<br>
John<br>
<br>
On Tue, Oct 19, 2010 at 10:57 AM, Mike Pfaiffer <<a href="mailto:high.res.mike@gmail.com">high.res.mike@gmail.com</a>> wrote:<br>
> On 10-10-19 10:39 AM, Sean Walberg wrote:<br>
>> On Tue, Oct 19, 2010 at 10:36 AM, Mike Pfaiffer<<a href="mailto:high.res.mike@gmail.com">high.res.mike@gmail.com</a>>wrote:<br>
>><br>
>><br>
>>> Then there is their policy of slowing down the entire connection if<br>
>>> they determine someone is using bittorrent on a LAN (even if the user<br>
>>> caps the up and down speeds)<br>
>><br>
>><br>
>> Do you have a source for this? Are you sure it's not because you're starving<br>
>> out your upstream and therefore not able to get ACKs out?<br>
>><br>
>> Sean<br>
>><br>
><br>
> Give it a try. Grab a movie or something. Use a bittorrent client<br>
> capable of capping the up and down speed. Ktorrent can do this. See what<br>
> you can get for both up and down uncapped. Then try running say Firefox<br>
> and look at its performance. Stop the bittorrent transfer and look at<br>
> Firefox again in a few minutes. Set up a cap in bittorrent say 10K on<br>
> both the up and down (bear in mind this is supposed to be a<br>
> multi-megabit connection). Restart your bittorrent and see what happens<br>
> with Firefox. You'll notice the bittorrent will transfer to what ever<br>
> maximum you set while other programs will barely function on the<br>
> internet. Local transfers on the LAN are fine though.<br>
><br>
> Later<br>
> Mike<br>
><br>
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><br>
<br>
<br>
<br>
--<br>
John Lange<br>
<a href="http://www.johnlange.ca" target="_blank">www.johnlange.ca</a><br>
<br>
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</div></div></blockquote></div><br><br clear="all"><br>-- <br>Sean Walberg <<a href="mailto:sean@ertw.com">sean@ertw.com</a>> <a href="http://ertw.com/">http://ertw.com/</a><br>
</div>