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ISDN vs. Leased lines
by william＠pacific.net.ph 01 Sep '98

01 Sep '98

Hi! Just wondering if anyone knows of any comparative studies on ISDN 64K/128K vs. 64K/128K leased lines. I'd like to check the performance comparison, like throughput and errors. Thanks in advance! William

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Colo Space in Sprint
by Todd_R_Stroup/Fnsi/US＠fnsi.net 31 Aug '98

31 Aug '98

Any one have a small bit of colo space available at the Sprint NAP? Any other solutions besides going somewhere else will be accepted as well. We did have confirmed space at the NAP but I guess it vanishes after a few days or so... Words of wisdom in private please : tstroup(a)fnsi.net T..S _______________________________________________________________ From: "Steven Schnell, Sprint Corporation" <schnell(a)gsd.sprint.com> To: tstroup(a)fnsi.net Cc: nap-engr(a)cde1.gsd.sprint.com Subject: Sprint NAP Information Todd: Your equipment has been assigned to Bay 517. We will be supplying redundant DC power to your router only and UPS-backed AC to all other equipment. What will be your access line rate, DS3 or OC-3? If DS3, what CSU/DSU do you plan to use? If you desire dialup access to your equipment you will need to order your business line from Bell Atlantic. They can be reached at 800.755.1096. You will need to instruct them to terminate your business line in a modular jack in Bay 517. Please don't hesitate to contact me with any questions or comments. Regards, Steven

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MCI outage on 8/29?
by Dan Hollis 31 Aug '98

31 Aug '98

Anyone have details on the MCI outage 8/29? All routing to their seattle POP was down from 8:45a PST - 11:30a PST. More weekend warriors with backhoes? -Dan

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BGP Communities - almost an operational question
by Alex Bligh 31 Aug '98

31 Aug '98

I've been trying to find out any logical reason why Ciscos limit me to 16 communities per route. I'm not asking on cisco-nsp as I want to know whether other routers suffer this limitation. Having read and reread rfc1771 and rfc1997, I think the community attribute list is limited by (a) the message length (not really relevant) and (b) the attribute length. The latter appears to be mainly an issue of whether one can be bothered to use extended-length in lieu of non-extended length. Even without using extended-length you have 255 bytes to play with which my calculation gives you 61 or 62 community attributes to play with. So: a) Have I just read the RFC wrong? b) Does other s/w (GateD. Bay etc.) have the same limitation? c) What happens if I try and feed routes with lots of community attributes to a Cisco, (perhaps I feed routes with less than 16 communities on but have set community additive)? Does it drop some randomly? Given that some people use 666 style filtering to prevent advertisement of routes to peers, could this cause leaks? (yes, I have an application for more than 16 communities per route). -- Alex Bligh GX Networks (formerly Xara Networks)

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Question2
by Tim Wolfe 31 Aug '98

31 Aug '98

I've gotten lot's of responses on my original question, but I'm finding perhaps I didn't ask the correct one. What I really need to know is what is the real world effect of latency on throughput? I know that frame relay has a higher latency than a point to point line, and that a point to point is generally regarded as faster. Would someone mind explaining the specifics of that relationship a little bit? Again, off list please, unless someone thinks it's an appropriate topic for this list.. Thanks again, Tim --------------------------------------------------- Tim Wolfe, Network Administrator ClipperNet Internet Access Services tim(a)clipper.net 541.431.3360 voice 541.431.1176 fax ...Across the Desktop and around the World... ---------------------------------------------------

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RE: BayNetworks BGP weirdness last night
by Mike McGuire 31 Aug '98

31 Aug '98

Our logs show nothing unusual for 8/30. BCN running 12.20 code. Mike M. -----Original Message----- From: Scott Gifford [SMTP:sgifford@tir.com] Sent: Monday, August 31, 1998 4:44 PM To: nanog(a)merit.edu Subject: BayNetworks BGP weirdness last night Anybody else with a Bay Networks router using BGP see weirdness last night? Our router started shutting down BGP links saying "AS Loop Detected", but turning on BGP debugging didn't find anything that looked like a loop to me. Eventually I had to turn off loop detection. I was wondering if our router was being weird on its own, or if a route made it into the global routing tables yesterday that Bay's software misconstrued... Thanks, ------Scott.

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Question
by Tim Wolfe 31 Aug '98

31 Aug '98

Anyone have a nice layman's terms explanation of the throughput/latency differences between a 56k modem, a 56k leased line, and a 56k frame relay circuit? This is assuming a "perfect" lab enviroment, ie. the modem connects and sustains at maximum capability, the frame cloud is not overloaded etc.. Please reply off list. Thanks, Tim --------------------------------------------------- Tim Wolfe, Network Administrator ClipperNet Internet Access Services tim(a)clipper.net 541.431.3360 voice 541.431.1176 fax ...Across the Desktop and around the World... ---------------------------------------------------

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BayNetworks BGP weirdness last night
by Scott Gifford 31 Aug '98

31 Aug '98

Anybody else with a Bay Networks router using BGP see weirdness last night? Our router started shutting down BGP links saying "AS Loop Detected", but turning on BGP debugging didn't find anything that looked like a loop to me. Eventually I had to turn off loop detection. I was wondering if our router was being weird on its own, or if a route made it into the global routing tables yesterday that Bay's software misconstrued... Thanks, ------Scott.

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Re: Transaction Based Settlements Encourage Waste (was Re: BBN /GTEI)
by Brett_Watson＠enron.net 31 Aug '98

31 Aug '98

On 08/28/98 01:14:36 PM owen wrote: > >> >> >> >NO!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! > >Please NOT that!!! I've spent the last 6 months trying to get my >home phone bill straightened out with MCI and PacBell has been >overbilling me for PVC's on my Frame Relay for 18 months. > >Please, let's not drop the internet to the level of service we all >complain about from the Telcos. well alright, they're not perfect but i seriously doubt that if an isp customer (anyone's customer) disputed pulling down a 1.5M .zip file sometime last month as part of their overall usage sensative bill that said isp could show the customer proof in the log files or captured packet traces. my only point was that we have a long way to go on the isp side. and if i'm wrong, i'd appreciate pointers to any rock-solid billing software out there. -brett

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Re: Transaction Based Settlements Encourage Waste (was Re: BBN /GTEI)
by owen＠DeLong.SJ.CA.US 31 Aug '98

31 Aug '98

Well, the telco can't really show me proof of half the things they're billing me for either, since they don't exist. In fact, I've confirmed with the guys running the switches that I only have the number of PVCs I thought I had. The telco is still billing me for n+2 PVCs. I agree with you that ISPs are nowhere near ready to do rock-solid usage billing. My point was that the Telcos aren't either. Let's not drag ISP service down to the level of customer service that is provided by Telcos, PLEASE. Owen > On 08/28/98 01:14:36 PM owen wrote: > > > >> > >> > >> > >NO!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! > > > >Please NOT that!!! I've spent the last 6 months trying to get my > >home phone bill straightened out with MCI and PacBell has been > >overbilling me for PVC's on my Frame Relay for 18 months. > > > >Please, let's not drop the internet to the level of service we all > >complain about from the Telcos. > > well alright, they're not perfect but i seriously doubt that if an isp > customer (anyone's customer) disputed pulling down a 1.5M .zip file > sometime last month as part of their overall usage sensative bill that said > isp could show the customer proof in the log files or captured packet > traces. my only point was that we have a long way to go on the isp side. > > and if i'm wrong, i'd appreciate pointers to any rock-solid billing > software out there. > > -brett > > >

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