<br><br><div class="gmail_quote">On Mon, May 16, 2011 at 7:42 AM, Kevin Gross <span dir="ltr"><<a href="mailto:kevin.gross@avanw.com">kevin.gross@avanw.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;">
I would like to try this. Can you suggest specific equipment to look at. Due<br>
to integration and low port count, most of the cheap consumer stuff has<br>
surprisingly good layer-2 performance. I've tested a bunch of Linksys and<br>
other small/medium business 5 to 24 port gigabit switches. Since I measure<br>
latency, I expect I would have noticed if flow control were kicking in.<br></blockquote><div><br>I would certainly appreciate more people looking at the switch in the wndr3700v2 we're using on the bismark project.<br>
<br>I'm seeing some pretty deep buffering on it <br></div><blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;">
<div class="im"><br>
Kevin Gross<br>
<br>
-----Original Message-----<br>
From: <a href="mailto:bloat-bounces@lists.bufferbloat.net">bloat-bounces@lists.bufferbloat.net</a><br>
[mailto:<a href="mailto:bloat-bounces@lists.bufferbloat.net">bloat-bounces@lists.bufferbloat.net</a>] On Behalf Of Jim Gettys<br>
</div>Sent: Monday, May 16, 2011 7:23 AM<br>
<div class="im">To: <a href="mailto:bloat@lists.bufferbloat.net">bloat@lists.bufferbloat.net</a><br>
Subject: Re: [Bloat] Jumbo frames and LAN buffers<br>
<br>
</div><div class="im">On 05/16/2011 09:15 AM, Kevin Gross wrote:<br>
> All the stand-alone switches I've looked at recently either do not support<br>
> 802.3x or support it in the (desireable) manner described in the last<br>
> paragraph of the linked blog post. I don't believe Ethernet flow control<br>
is<br>
> a factor in current LANs. I'd be interested to know the specifics if<br>
anyone<br>
> sees it differently.<br>
<br>
Heh. Plug wireshark into current off the shelf cheap consumer switches<br>
intended for the home. You won't like what you see. And you have no<br>
way to manage them. I was quite surprised last fall when doing my home<br>
experiments to see 802.3 frames; I had been blissfully unaware of its<br>
existence, and had to go read up on it as a result.<br>
<br>
I don't think any of the enterprise switches are so brain damaged. So i<br>
suspect it's mostly lurking to cause trouble in home and small office<br>
environments, exactly where no-one will know what's going on.<br>
- Jim<br>
<br>
<br>
<br>
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</div></div></blockquote></div><br><br clear="all"><br>-- <br>Dave Täht<br>SKYPE: davetaht<br>US Tel: 1-239-829-5608<br><a href="http://the-edge.blogspot.com" target="_blank">http://the-edge.blogspot.com</a> <br>