The routers are Edgemarc. P/N EM-4608T4 http://www.edgewaternetworks.com/edgemarc_overview_page.htm
On Thu, Feb 17, 2011 at 8:19 AM, Ryan Finnesey < ryan.finne...@harrierinvestments.com> wrote: > What type of hardware are they using for this BIB router? > > Cheers > Ryan > > > -----Original Message----- > From: Mikeal Clark [mailto:mikeal.cl...@gmail.com] > Sent: Wednesday, February 16, 2011 6:16 PM > To: Jim Gettys > Cc: nanog@nanog.org > Subject: Re: AT&T MPLS / BIB Routers > > I'm building up to 3000-4000ms latency with these BIB routers. We never > had this issue on the old point to points using Cisco gear. > > On Wed, Feb 16, 2011 at 5:09 PM, Jim Gettys <j...@freedesktop.org> wrote: > > > On 02/16/2011 05:44 PM, Mikeal Clark wrote: > > > >> We just put in a AT&T MPLS and are having a pretty negative > >> experience with the "Business in a Box" routers they are using for > >> our smaller sites. We are seeing extremely high latency under load. > > >> Anyone have any experience with these devices that could shed some > >> light on this? Are they really this bad? > >> > >> > > There is excessive buffering in all sorts of devices all over the > Internet. > > This causes high latency under load (along with higher packet losses, > > and lots of other problems. > > > > It's what I've been blogging about on http://gettys.wordpress.com. > > These buffers fill; and they are so large they have defeated TCP > > congestion avoidance to boot, with horrifying consequences. > > > > So far, I've found this problem (almost) everywhere I've looked: > > o ICSI has good data that bufferbloat is endemic in DSL, Cable, > > > and FIOS. Delays are often measured in seconds (rather than > milliseconds). > > o some corporate and ISP networks run without AQM, in > > circumstances that they should. > > o Windows, Mac OSX and Linux all have bufferbloat in their > > network stacks, at a minimum on recent network device drivers, and > often elsewhere. > > o Every home router I've tested is horrifyingly bad. > > o 3g networks & 802.11 have this in spades. > > > > Why should AT&T's MPLS be any different? > > > > My next topic will be "transient" bufferbloat, having to do with > > defeating slowstart. > > > > Come start helping fix this: please join us at bufferbloat.net, as we > > try to get people to fix it. Already there are some experimental > > patches for the Linux Intel wireless driver. > > Jim Gettys > > Bell Labs > > > > >
