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
Sean
On Tue, Oct 19, 2010 at 11:17 AM, Adam Thompson athompso@athompso.netwrote:
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.
*sigh* I can't believe I'm defending Shaw...
-Adam
-----Original Message----- From: John Lange john@johnlange.ca Sender: roundtable-bounces@muug.mb.ca Date: Tue, 19 Oct 2010 11:14:16 To: Continuation of Round Table discussionroundtable@muug.mb.ca Reply-To: Continuation of Round Table discussion roundtable@muug.mb.ca Subject: Re: [RndTbl] Shaw packet loss
Just for reference; I use mtr for testing this.
Here is the command line. As you can see, I've set a very aggressive packet rate (20/second).
# mtr -r -w -c 500 -n -i 0.05 www.google.ca
I actually stick it in a loop so I can keep it running and see periodic results:
# while true ; do date ; mtr -r -w -c 500 -n -i 0.05 www.google.ca ; done
When I see loss, it's always at the first hop yet it doesn't seem to matter which gateway it is. These are all Shaw business customers so may not be affecting residential.
John
On Tue, Oct 19, 2010 at 10:57 AM, Mike Pfaiffer high.res.mike@gmail.com wrote:
On 10-10-19 10:39 AM, Sean Walberg wrote:
On Tue, Oct 19, 2010 at 10:36 AM, Mike Pfaiffer<high.res.mike@gmail.com
wrote:
Then there is their policy of slowing down the entireconnection if
they determine someone is using bittorrent on a LAN (even if the user caps the up and down speeds)
Do you have a source for this? Are you sure it's not because you're
starving
out your upstream and therefore not able to get ACKs out?
Sean
Give it a try. Grab a movie or something. Use a bittorrent clientcapable of capping the up and down speed. Ktorrent can do this. See what you can get for both up and down uncapped. Then try running say Firefox and look at its performance. Stop the bittorrent transfer and look at Firefox again in a few minutes. Set up a cap in bittorrent say 10K on both the up and down (bear in mind this is supposed to be a multi-megabit connection). Restart your bittorrent and see what happens with Firefox. You'll notice the bittorrent will transfer to what ever maximum you set while other programs will barely function on the internet. Local transfers on the LAN are fine though.
Later Mike
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