December 1997 - Test - lists.nanog.org

gated users.
by Neil J. McRae 19 Dec '97

19 Dec '97

Did anyone have some strange problems with gated today? > > Dec 19 16:02:53 BGP RECV message type 2 (Update) length 58 > > Dec 19 16:02:53 BGP RECV flags 0x40 code Origin(1): Incomplete > > Dec 19 16:02:53 BGP RECV flags 0x40 code ASPath(2): (0x02 0x04 0x19 0x35 0x 02 0xbd 0x02 0xbf) > > Dec 19 16:02:53 BGP RECV flags 0x40 code NextHop(3): 207.45.199.245 > > Dec 19 16:02:53 BGP RECV flags 0xc0 code Aggregator(7): 3751 204.60.33.254 > > Dec 19 16:02:53 BGP RECV 204.243.126/24 > This announcement was cause gated to go berzerk. Cheers, Neil. -- Neil J. McRae - Alive and Kicking. C O L T I N T E R N E T neil(a)COLT.NET Ascend GRF: 100% CpF [Cisco protection Factor] Free the daemon in your <A HREF="http://www.NetBSD.ORG/">computer!</A>

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RE: Test
by Bob Bownes 19 Dec '97

19 Dec '97

Randy must be on vacation. I thought it was broke too. ---------- From: Alex Rubenstein[SMTP:alex@nac.net] Sent: Friday, December 19, 1997 1:08 AM To: Michael Gibson Cc: north american nominated origin of gossip Subject: Re: Test I'm here; seems awful quiet, lately. On Thu, 18 Dec 1997, Michael Gibson wrote: > NANOG out there? > > Michael Gibson > Senior Network Administrator - NETCOM Canada > telephone: 416-341-5754 fax. 416-341-5725 > magibson(a)netcom.ca > > >

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Test
by Michael Gibson 19 Dec '97

19 Dec '97

NANOG out there? Michael Gibson Senior Network Administrator - NETCOM Canada telephone: 416-341-5754 fax. 416-341-5725 magibson(a)netcom.ca

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Re: Traffic Engineering
by James R Grinter 17 Dec '97

17 Dec '97

freedman(a)netaxs.com (Avi Freedman) writes: > smd(a)clock.org (Sean Doran) writes: > > P.S.: Curtis Villamizar had another interesting approach > > which involved pushing content far afield to > > machines with the same transport-layer (IP) > > addresses, relying upon closest-exit routing to > > connect one to the topologically-closest replication > > machine. Unfortunately, while this could be really (this is something we've done a little of at work: we do have it in production use, and it's not so effective when there's asymmetric routing - which we have quite a bit for some European networks, eg two peerings with Ebone. Duplicating IP addresses definitely has its place, eg internal to a network for directing a bunch of RASs to a local version of a 'service' address.) > And Alec Peterson (now of Erols) has figured out an even > arguably slicker way to do it. This is a problem I've been musing over lately. The best way that I can see is to return suitable DNS answers to people. This avoids the route instability problems that Sean comments on, above: Client gets TCP session established. Routes change, their inbound route now reaches a different system which clearly doesn't know about the connection and *boom* goes the TCP session. Routes return to their previous situation but by this time it's too late. (Even worse is when the client connects *during* the route instability.) but with DNS you've still got to return a suitable answer. (You could route to your DNS server, but that doesn't address the asymmetry problems.) If the bulk of your data is from you to the client (web, euuw), then it's ok because you are in a position to decide what the best route back across your network is and pick the nearest/most appropriate server. Requests usually come from the client's nearest recursing/resolving DNS server and so that's just a SMOP to decide the best way back. Where you get really screwed up is having to support large numbers of IP addresses - good ol' HTTP/1.0 requests (it's that damn web, again). Using (n x number of "sites") isn't practical. Maybe the real operational issue is working out when we stop having to assign all these zillions of IP addresses for web servers. The marketting people don't want to make the change whilst their competitors aren't. James.

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Announce: The NANOG Channel
by Eric Germann 16 Dec '97

16 Dec '97

Being the keeper of the searchable NANOG archive, I added an active channel for it. If you use MS IE 4.0, you can now have all the great content of NANOG on your desk every morning. Go to http://www.cctec.com/maillists/nanog/index.html Please don't make me have to change the RSACi ratings for Language, Violence, Sex and Nudity. Also, be aware the full archive is about 82MB and approximately 16,000 files. If you're on a modem, beware. We will soon be adding a channel for "just" the current month's posts. Commentary invited, flames ignored, if applicable. Enjoy and Happy Holidays, Eric ============================================================================ ==== Eric Germann Computer and Communications Technologies ekgermann(a)cctec.com Van Wert, OH 45891 Phone: 419 968 2640 http://www.cctec.com Fax: 419 968 2641 Network Design, Connectivity & System Integration Services A Microsoft Solution Provider

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Re: PPP Question
by William Allen Simpson 16 Dec '97

16 Dec '97

Catching up on NANOG after returning from IETF, I found this incongruous message, and would like to correct the misinformation. The PPP Maximum Receive Unit is negotiated, but this is a "maximum", not a "fixed" size. Smaller packets can be sent. While it would be perfectly legal to fill the remainder of the packet with padding, I know of no vendor that does it. This would seriously waste bandwidth. The padding feature is available for old chipsets that require 16-bit and 32-bit output data alignment. Further questions about PPP should be sent to the ietf-ppp(a)merit.edu mailing list, as designated in RFC1661.... Yes, NANOG is also hosted by Merit, but the lists have different purposes. Really. As usual, joining a list requires a message to <list>-request. I was amazed at the number of messages arising from nanog list members complaining that pppsdh(a)greendragon.com did not allow sending a "join", "request", "subscribe" or other subject to the mailing list directly. (heavy sigh) > From: "Chris MacFarlane" <cjm(a)ican.net> > More to the point is that the frame size is negotiated while handshaking. > Once two devices agree on the size it is fixed for the duration of the > session. > > -----Original Message----- > From: George Janosik <gjanosik(a)torrentnet.com> > >Is a PPP frame size static or elastic? RFC 1661 states: > >... > >But, it also says the the Information field "MAY" be padded up to the MRU. > > > >I have hard time believing that a PPP frame would be static. WSimpson(a)UMich.edu Key fingerprint = 17 40 5E 67 15 6F 31 26 DD 0D B9 9B 6A 15 2C 32

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Sep 11 zones missing from root servers?
by Phillip Vandry 16 Dec '97

16 Dec '97

I have a suspicion that domains created or updated on September 11 at Internic are missing from the root servers today. I have 2 cases like this. Can anyone confirm this or show a counterexample? -Phil

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Cisco Vip Cards.
by Robert Davila 16 Dec '97

16 Dec '97

I just have a quick qustion. I'm in the process of determining weather or not to purchase several VIP cards and modules for a few 7513's I have at remote locations accross the United states. I spoke with some friends I have at cisco in referance to known related problems with the VIP cards (according to cisco there were close to non) but I am interested in some input from people who are already using VIP cards on 7513's. Thanks, Rob -- **************************************************************** * * USLD Communications * * Robert A. Davila * Your One Source For Communications * * Network Administrator * 1-800-460-USLD * * * Http://www.usld.com * ****************************************************************

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NANOG 12 Announcement
by William B. Norton 15 Dec '97

15 Dec '97

Hi all - We are all set now for NANOG 12. NANOG 12 will be held Feb 8-10 hosted by iHighway in Albequerque, New Mexico at the Crowne Plaza Pyramid hotel. Please see the NANOG web pages (http://www.nanog.org) for registration pages, meeting details, local host information, etc. More information will be put up as it becomes available. We are constructing the initial agenda as we speak. Please send e-mail (wbn@merit.edu,srh@merit.edu) if you have agenda suggestions. Bill PS: I'm told there is good skiing near by...Perhaps we can get a small group together for a couple days of skiing before or after NANOG? We need to find a skiing affectionado/volunteer to take the lead to organize this (hint..hint). An alternative would be a trip down to Roswell to see the alien artifacts (http://www.charlotte.infi.net/~knapik/sec-ro.html) I'd vote skiing, but then, I'm part of the conspiracy ;-) -------------------------------------------------------------- William B. Norton <wbn(a)merit.edu> (313) 764-9430

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hwb's IETF mpeg animations now available from www.caida.org
by k claffy 14 Dec '97

14 Dec '97

(sorry for list rep) we did a presentation on some AS adjacency and address space data at IETF. keywords: collaborative data collection, visualization, insight, systemic perspective, rational global engineering, cool pix non-keywords: anything political, legal, financial, or o/w offensive/loaded k/hwb caida ---------------------------------------------------------- http://www.caida.org/Presentations/Ietf199712/Movie/ you really want a real mpeg_play before you even think about this endeavor all relevant links you need are there we have the full movie there (62MB of 640*480 and no audio, turns out james earl jones was booked), or the individual pieces with file size noted and linked to text explanations of how data procured/processed (including processing source code) and what implications to (not necessarily) draw from it also we're trying to get a smaller 320*240 version out soon (for slower machines), but enough people wanted this asap that we thought we'd better make what we have available and add as we get more (in other words, wouldn't even try current version without a > 200Mhz box, and even with that it won't run at full speed. if you're so handicapped do have patience for a day while he pumps out the lite version) feedback more than welcome but please be gentle you wouldn't believe how much work this took k

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