Date: Tue, 3 Jul 2001 09:14:56 -0400 From: Bill Vermillion <bill@wjv.com> To: Bryan Fullerton <bjf@samurai.com> Cc: bv@wjv.com, net@FreeBSD.ORG Subject: Re: PPPoE latency Message-ID: <20010703091456.E5516@wjv.com> In-Reply-To: <f05101002b76700057320@[192.168.1.34]>; from bjf@samurai.com on Tue, Jul 03, 2001 at 01:02:22AM -0400 References: <f05101003b766f52ce823@[192.168.1.34]> <20010703004307.E2458@wjv.com> <f05101002b76700057320@[192.168.1.34]>
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On Tue, Jul 03, 2001 at 01:02:22AM -0400, Bryan Fullerton thus sprach: > At 12:43 AM -0400 7/3/01, Bill Vermillion wrote: > >The only way to be sure it is OS related [and I suspect it is not] > >is to take your machine to their location. DSL can vary in speed > >from location to location. > Ah - here I should mention that I had similar ping times with this > same provider when I was on the other side of the city (moved in > March). You neglected to say that. .... > The pings that I provided were to the first hop, ie my gateway at the > other end of the connection. It could be latency in my provider's > network, I suppose, but seems unlikely it'd affect me in two > locations and not my friend in a third (also downtown). But certainly > possible. Well in the above instance I am the provider and I get different ping times at the different locations. [Just bringing this all up and only got one running late Wednesay night]. If you provider is not the lowest link in the chain, eg the telco providing service to your location, you could see all sorts of speed differernces. And customers we bring up could come back over a pipe inside our DS3 to Bell or the ATM link to Sprint. I saw racks across the room from Telocity and I don't know whether they were reselling or had their own equipment in the COs and then back-hauling to the facility I have my rack space in. [big place - in the area in back where I only get to go when being walked through by a tech en route to somewhere else] I saw banks of Ascend/Lucent Maxes - and a rough guess is 30-35K worth of digital modems. I believe 15K of those was being routed from another city back to the central transport. I think about 1/2 of those [at least 15,000] are for AOL. > > BTW I am NOT using PPPoE but PPoA. > So.. not actually doing packet encapsulation and authentication with > FreeBSD PPP then? If so, then we're not comparing apples to apples. But I was tyring to point out - and not very well at that - that just being from the same provider doesn't mean all that much. Before Northpoint folded a lot of the local ISP's were just reselling their services. One ISP also dropped their own DSLAM into a few large business type locations and back-hauled to their central site - and they only have DS3 to the outside world and at times those get overloaded. So things could vary greatly with the same provider at different location points depending on how they link back to their connects. -- Bill Vermillion - bv @ wjv . com To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-net" in the body of the message
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