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Re: RA/RV Feeds from RBN
by Tony Li 17 Feb '98

17 Feb '98

Vadim, I sympathize with all of your cogent comments when applied to multicasting in the large. However, multicasting in the small, as practiced by certain ISPs seems to violate all of your assumptions and thus violates your conclusions. A specific example is UUcast. Comments? Tony

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Broken Pipe errors with dialup users
by Mark Tripod 17 Feb '98

17 Feb '98

We are experiencing an intermittant problem where dial-up users that access our customers web servers through our Sprint NAP connection get "broken pipe" errors. This problem seems to appear with a greater frequency with users that use Apple Macintoshs with MacTCP, although Win95 users have also complained of the same problem. With the Win95 users they can change their local MTU setting to 1500 and the problem disappears. We are connected to the Sprint NAP via a full duplex Fddi PA on a Cisco 7505. Anyone encountered this type of problem before? Any thoughts would be greatly appreciated. Off I go to dig into the packets and start testing :) Thanks, Mark Tripod Senior Backbone Engineer Exodus Communications

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of course you're invited...
by rlife＠daltek.net 17 Feb '98

17 Feb '98

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Re: Broken domain statistics...
by dlr＠bungi.com 17 Feb '98

17 Feb '98

[In the message entitled "Re: Broken domain statistics..." on Feb 13, 2:24, Jon Lewis writes:] > > That brings up another question. What can/should be done with such > "tainted" IP space? Who in their right mind would want space previously > used by Cyberpromo? It's almost as if they destroyed the IP space they > used. > It's an interesting question. I had the first dealing with it a couple of days ago. A site called me, and wanted off the RBL. Turned out it was one of the sites that hosted a nameserver for a few days for Cyberpromo. After the standard set of questions, I removed them - but I know that they are going to have a whole heap of trouble with the thousands of other sites that were blocking Cyberpromo. Without a central registry, unblocking "bad" addresses is going to be a huge job. -- Dave Rand dlr(a)bungi.com http://www.bungi.com

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Notes from the Februray 1998 meeting
by sob＠academ.com 17 Feb '98

17 Feb '98

They are now starting to appear at this URL http://www.academ.com/nanog/feb1998 They are not in the index as yet. Also, I will be asking for slides from those talks I don't have available to me. If you know you have not sent them to me, please contact me. Otherwise, you will hear from me via private email. -- Stan | Academ Consulting Services |internet: sob(a)academ.com Olan | For more info on academ, see this |uucp: {mcsun|amdahl}!academ!sob Barber | URL- http://www.academ.com/academ |Opinions expressed are only mine.

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Re: Fiber cut in SJ 1:54 EST
by Sean Donelan 17 Feb '98

17 Feb '98

>They will? How many know about the cut in Atlanta Sunday? 8-12 hrs? I >don't know exactly. Do they (WorldCom) have a maillist for trouble and >scheduled maintenance or a status page? And what happened to their website? >Their dns entry is gone. The mailing list outage(a)dal.net has some multi-provider outage information. Although, like most mailing lists, the quality of information depends on contributors to the list. www.wcom.com is the parent corporation web site. Whether 'they' have a mailing list for trouble or scheduled maintenance is a very different question than do 'they' bother posting anything to it. During some outages it takes MFS's service center 40 minutes to answer the phone. WCOM is taking up to 15 minutes to answer the phone. "Answer" means reach someone/something that can give accurate information and open a trouble ticket, as opposed to the "Your call is very important, please wait...." recording. Misc. California: Too many to itemize. Unstable ground has affected several facilities-based carriers. AT&T, MCI, Pacbell, Worldcom, etc have had one or more circuit failures in the last week. Although I believe most of the MAE-West issues have involved human activities, some with prior notice, some without notice. Buckhead, GA: Worldom 28 OC-12 circuits out of service, 8:06am-1:02pm on Sunday. reason: fiber cut ?human/nature? And to show I'm not just beating up on Worldcom... Here's one for AT&T's latest aquisition, TCG/Teleport. St. Louis, MO: TCG/AT&T takes their SONET ring out of service 00:56am-3:18am Sunday. reason: scheduled maintenance, prior customer notice: no. -- Sean Donelan, Data Research Associates, Inc, St. Louis, MO Affiliation given for identification not representation

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ISP (dialup) for SE Asia?
by Dean Anderson 17 Feb '98

17 Feb '98

Can anyone recommend an ISP(s) which can do local dialup in SE Asia, specifically Taiwan, Singapore, and Korea? Japan is already done, but we don't have local, in-country contacts for these other places. Thanks in advance, --Dean ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ Plain Aviation, Inc dean(a)av8.com LAN/WAN/UNIX/NT/TCPIP http://www.av8.com ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

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Re: RA/RV Feeds from RBN
by Sean M. Doran 17 Feb '98

17 Feb '98

brandon(a)rd.bbc.co.uk (BrandonButterworth) writes: > If MBONE is to be a serious contender the ISPs must > deliver it, then us content providers that are wasting > tons of net bandwith could become nicer netizens and > wouldn't use the unicast products that end users are > asking for. Of course the ISPs may not take as much > money off us as we wouldn't need quite so much bandwidth > (perhaps there's a reason there?) The real problem is that IPv4 Multicast scales badly with the number of groups, and Multicast routing is difficult. If you doubt any of this, kindly review the recent Dave Meyer presentations at any of your favourite conferences. Content multicast is *wonderful* news for any ISP that overbooks its backbone capacity: the amount of overbooking possible increases with the volume of highly-popular scheduled content. That is, if you have lots of replication happening in multicast routers (presumably because your customers have things attached to them who want the same content at the same time), then you can fill your customer links with stuff that has less impact on your relatively large backbone pipes. InternetMCI is among a number of ISPs who have worked on eliminating redundant copies of multicast traffic crossing their backbones by deploying MBONE infrastructure. This is not the same as deploying a multicast infrastructure, however that is a very different rant. So, frankly, your suggestion that ISPs make less money off you when there is lots of well-laid-out distribution trees carrying lots of content to lots of places is simply wrong. The problem is mostly that people are busy making unicast mostly work and are finding that sufficiently difficult that making multicast work better than it does now just does not get attention, particularly since multicast routing is hard and multicast routing code is buggy at least in part due to that. The lack of perceived utility for multicast also has an effect on the other side of a cost-benefit analysis that does not favour rapid deployment. Sean.

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Smurfing
by Alex Rubenstein 17 Feb '98

17 Feb '98

One of my customers is being smurfed right now. Filling a 10 Meg to UU Net. It is wonderful to know that everyone has 'no ip directed-broadcast'. It's *SO* easy to do!

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Re: Fiber cut in SJ 1:54 EST
by Matt Sommer 16 Feb '98

16 Feb '98

-----Original Message----- From: Richard Irving <rirving(a)onecall.net> Date: Saturday, February 14, 1998 4:56 PM Subject: Fiber cut in SJ 1:54 EST >There has been a fiber cut in SJ region affecting several >carriers. The fiber carriers (WC) will be keeping everyone >informed. Expect unusual flows. > > :( They will? How many know about the cut in Atlanta Sunday? 8-12 hrs? I don't know exactly. Do they (WorldCom) have a maillist for trouble and scheduled maintenance or a status page? And what happened to their website? Their dns entry is gone. I subscribed to weather-talk(a)internetweather.com but there's not much posting there. Any other sites or lists for outages? Matt Sommer Sysadmin

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