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