March 2001 - Test - lists.nanog.org

rtty 4.0
by Paul A Vixie 24 Mar '01

24 Mar '01

i know a lot of you are using rtty for your console concentrators, and this seems like the easiest way to let the world know that 4.0 is out. nothing earthshattering. still has the same old BSD-style license. ftp://ftp.vix.com/pub/vixie/rtty-4.0.shar.gz Portability to POSIX/ANSI systems (pre-ANSI or pre-POSIX no longer supported.) Uses nonblocking I/O to terminals rather than depending on undependable VMIN=0. Massive delinting (now passes "gcc -Wall".)

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The Cidr Report
by Tony Bates 24 Mar '01

24 Mar '01

This is an auto-generated mail on Fri Mar 23 23:00:00 PST 2001 It is not checked before it leaves my workstation. However, hopefully you will find this report interesting and will take the time to look through this to see if you can improve the amount of aggregation you perform. The report is split into sections: 0) General Status List the route table history for the last week, list any possibly bogus routes seen and give some status on ASes. 1) Gains by aggregating at the origin AS level This lists the "Top 30" players who if they decided to aggregate their announced classful prefixes at the origin AS level could make a significant difference in the reduction of the current size of the Internet routing table. This calculation does not take into account the inclusion of holes when forming an aggregate so it is possible even larger reduction should be possible. 2) Weekly Delta A summary of the last weeks changes in terms of withdrawn and added routes. Please note that this is only a snapshot but does give some indication of ASes participating in CIDR. Clearly, it is generally a good thing to see a large amont of withdrawls. 3) Interesting aggregates Interesting here means not an aggregate made as a set of classful routes. Thanks to xara.net for giving me access to their routing tables once a day. Please send any comments about this report directly to me. Check http://www.employees.org/~tbates/cidr-report.html for a daily update of this report. ------------------------------------------------------------------------------ CIDR REPORT for 23Mar01 0) General Status Table History ------------- Date Prefixes 160301 97900 170301 98013 180301 97932 190301 97895 200301 97452 210301 97740 220301 97971 230301 98100 Check http://www.employees.org/~tbates/cidr.plot.html for a plot of the table history. Possible Bogus Routes --------------------- AS Summary ---------- Number of ASes in routing system: 6535 Number of ASes announcing only one prefix: 2606 (0 cidr, 2606 classful) Largest number of cidr routes: 0 announced by Largest number of classful routes: 1521 announced by AS1221 1) Gains by aggregating at the origin AS level --- 23Mar01 --- ASnum NetsNow NetsCIDR NetGain % Gain Description AS1221 1521 1147 374 24.6% Telstra Pty Ltd AS701 1433 1266 167 11.7% UUNET Technologies, Inc. AS9269 162 53 109 67.3% Internet service Provider in Hong AS6595 165 63 102 61.8% DoD Education Activity Network As AS6429 209 109 100 47.8% RdC Internet AS4151 255 156 99 38.8% USDA AS13999 104 8 96 92.3% Mega Cable S.A. de C.V. AS705 334 241 93 27.8% UUNET Technologies, Inc. AS4293 367 279 88 24.0% Cable & Wireless USA AS8013 317 233 84 26.5% PSINet Ltd. Canada AS7018 663 584 79 11.9% AT&T AS4755 211 136 75 35.5% Videsh Sanchar Nigam Ltd. Autonom AS577 234 165 69 29.5% Bell Advanced Communications Inc. AS5106 101 37 64 63.4% Ameritech Advanced Data Services, AS3464 153 91 62 40.5% Alabama SuperComputer Network AS724 211 150 61 28.9% DLA Systems Automation Center AS3749 119 60 59 49.6% Tennessee Board of Regents AS9498 74 17 57 77.0% BHARTI BT INTERNET LTD. AS16758 63 6 57 90.5% IKON Office Solutions AS6413 67 11 56 83.6% Southern Online Systems, Inc. AS4323 233 177 56 24.0% Time Warner Communications, Inc. AS376 133 77 56 42.1% Reseau Interordinateurs Scientiqu AS226 149 93 56 37.6% Los Nettos AS174 460 404 56 12.2% PSINet Inc. AS11170 60 4 56 93.3% Bewell Net AS7568 83 28 55 66.3% C.S. Communications Co., Ltd. AS1 604 550 54 8.9% BBN Planet AS6471 99 46 53 53.5% ENTEL CHILE S.A. AS11252 89 36 53 59.6% ISU Computer Center Bldg. 5 AS7657 140 89 51 36.4% The Internet Group Limited For the rest of the previous weeks gain information please see http://www.employees.org:80/~tbates/cidr-report.html 2) Weekly Delta Please see http://www.employees.org:80/~tbates/cidr-report.html for this part of the report 3) Interesting aggregates Please see http://www.employees.org:80/~tbates/cidr-report.html for this part of the report

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Re: Advanced Warning: Qwest/Lucent ATM upgrade
by Sean Donelan 23 Mar '01

23 Mar '01

On Fri, 23 March 2001, Sean Donelan wrote: > Routing may be weirder than normal this evening. Qwest is upgrading > their Lucent ATM switches to fix a bug, and needs to shutdown their > entire ATM backbone for a couple of hours Apparently big company disease has taken over. Part of Qwest is telling customers it is working very hard to make this change as fast, and as painless as possible. The other part of Qwest is telling customers, Duh, never heard of ATM. As best I can tell, if you are buying Qwest "IP" service, this won't affect you. If you are buying Qwest "ATM" service, it will affect you. Of course, carriers buying dark fiber services from Qwest will not be affected by whatever shenigans are going on at layer 2/3/4/5/6/7. As always, your Qwest salesperson should be your best source of information.

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Re: Advice on colo locations in SJC
by Kevin Facinelli 23 Mar '01

23 Mar '01

> Simon, > > You have a lot of choices for colocation in the San > Jose area. I pulled a listing of colocation > providers > in California that show service in the 408 area code > and 20 different providers show up. I would think > that many of these organizations would be able to > fill > your needs however each would need to be explored in > more detail. I would suggest sending out a RFP to a > number of different organizations and based on their > responses selecting the one you feel most > comfortable > with, > > Results from www.colosource.com search on > California, > 408 area code > > Many companies list Corporate Office or NOC as > primary > business location but all have facilities within > your > search parameters. Specifics on additional facility > locations can be found in the listing detail. > > 1. AboveNet - San Jose, California - 888-298-5566 > Clients co-located within an AboveNet Internet > Service > Exchange (ISX) enjoy the three major components of > the > AboveNet solution: World-class facilities Unmatched, > congestion-free Internet connecti > > 2. AstraGate, Inc. - Santa Clara, California - > 408-985-4590 > AstraGate provides one of the highest quality > collocations, and in the most high tech facilities > in > the US. Our prices can not be beat for this kind of > infrastructure and peace of mind. One month o > > 3. Bay Area Internet Solutions (BAIS, Inc.) - San > Jose, California - (408) 545-0500 > Bay Area Internet Solutions (BAIS, Inc.), a leader > in > Internet access and communications solutions, offers > a > comprehensive range of Internet services to > businesses, online service providers and e-busi > > 4. Broadwing Communications - San Jose, California - > 408-441-3461 > Multi-billion dollar company that owns and operates > over 21,500 route miles of next generation fiber. We > also operate 11 data centers in major markets > throughout the US. We offer professional services > > 5. COLO.COM - Brisbane, California - 877-GET-COLO > COLO.COM's Neutral Optical solution will offer you - > the customer - more choices than ever before: Choice > of cage, cabinets or custom space, choice of > domestic > and international locations, choice of n > > 6. Concentric Network Corporation - San Jose, > California - 877.932.2629 > ConcentricHost Co-location is the ideal solution for > your business if you own a dedicated server and want > to outsource your Web hosting. The service makes it > easy for your company to focus on its core > > 7. ELAN Communications Inc. - San Jose, California - > 877-ELAN-NET > ELAN is a parent company of BizNet Communications. > We > are headquartered in San Jose and specialize in > providing dedicated connectivity and outsourcing > services to ISPs. We provide dedicatated servers, > > 8. Equinix, Inc. - Mountain View, California - 650 > 316-6000 > Equinix, Inc. designs, builds and operates neutral > Internet Business Exchange� (IBX�) centers which > provide e-commerce companies, content providers and > ASPs with the power to choose from a wide variet > > 9. Exodus - Santa Clara, California - 408.346.2200 > CyberRack� & CyberCabinet� For businesses with > smaller > space requirements, scalable racks and enclosed > cabinets allow you to store and manage your > equipment > offsite and enjoy the unequivocal advantag > > 10. Global Crossing - Sunnyvale, California - > 408.543.4700 > A GlobalCenter Data Center is the best e-business > location on the Internet. Our Data Centers incorpo > > 11. Hurricane Electric Internet Services - Fremont, > California - 510-580-4190 > Hurricane Electric is in the same building as > MAE-West. We have multiple fiber optic OC-3 > connections, and directly peer with major networks. > -------------------------------------------------- > > 12. InReach Internet - Oakland, California - > 510-291-5165 > InReach provides 3 DS-3 connections to the Internet > including an ATM connection to the PacBell NAP, > located directly across the street from our downtown > Oakland facility. Colocation gives your servers > > 13. Internet Specialties West - Westlake Village, > California - 818/ 735-3000 > ISWest's network is fully switched using only top > quality components from Cisco Systems. In addition, > all servers are fed from multi-homed DS3 (Frontier > Global Center & Relay Point) backbones.Our netw > > 14. Level 3 Communications - Sunnyvale, California - > 408-774-5000 > Level 3 is a fiber-based carrier that offers > state-of-the-art colocation facilities for > high-bandwidth IP and telecommunications users in > over > 30 cities worldwide. > > 15. Netstream - San Jose, California - 408-291-5457 > I am Joe Franco and my company is NetStream. We are > a > Next Generation Network Provider. Are company does > broadband internet service, collocation services, > local, and long distance phone services. A > > 16. Silicon Valley Telecom & Internet Exchange - San > Jose, California - 408-234-3400 > multiple carrier hotel last mile to MAE WEST, RBOC > ports to 274 Brannan in San Francisco, Paix, Mae > West. > 1,200 cabs and racks for lease. 100,000 sf bldg home > of Verio, NTT, Enron, ELI. 7 NODES, Ba > > 17. Switch & Data Facilities Co - Tampa, Florida - > 800-4559922 > Switch & Data Facilities Co. (S&DFC) operates a > nation-wide chain of carrier-neutral, highly > improved > shared-infrastructure (�colocation�) facilities, > offering ISPs and telcos flexible, economical spa > > 18. Verado - San Jose, California - 408-280-2300 > Verado offers customized solutions that range from > fully outsourced managed hosting to customer > maintained data center colocation services. Verado�s > broad range of managed hosting services include sto > > 19. Web Professionals, Inc. - Cupertino, California > - > 408/ 863-4848 > Web Server Collocation inside an Internet Exchange > As > corporate Web sites reach a new level of > sophistication beyond brochureware sites of the > past, > their reliability, response time, network throughp > > 20. Web Zone, Inc. - Santa Clara, California - 408 > 235-1476 > Web Zone, Inc. offers "Total Managed Services" in > the > co-location environment. Specializing in Co-location > space, bandwidth, 24 x 7 monitoring and response > services, server on demand, firewall on dema > > Good luck, > > Kevin > > > > --- Simon Lockhart <simonl(a)rd.bbc.co.uk> wrote: > > > > All, > > > > I'm just trying to work out a plan for building my > > network into the SJC > > area. (I've got LA sorted - it looks like 1 > Wilshire > > is the place to be - > > or nearby!). > > > > I'll be needing to hook up to MAE-West ATM, and to > > PAIX, bringing in > > long-haul backbone circuits (from LA and probably > an > > alternate route from > > NY), and hopping out a few local circuits to the > Bay > > area. Initially I'd > > be looking for just 1 or two racks to house > routers, > > but longer term would > > need access to a larger colo space if we build a > > server farm. All colo > > should be "neutral" where possible. > > > > MAE-W looks to be in 55 South Market, SJ, and a > few > > people seem to have > > colo available there. Is that a good place to be? > > Any better suggestions? > > > > Thanks, > > > > Simon > > -- > > Simon Lockhart | Tel: +44 > > (0)1737 839676 > > Internet Engineering Manager | Fax: +44 > > (0)1737 839516 > > BBC Internet Services | Email: > > Simon.Lockhart(a)bbc.co.uk > > Kingswood Warren,Tadworth,Surrey,UK | URL: > > http://support.bbc.co.uk/ > > > > > > > > > ===== > Kevin Facinelli > www.colosource.com > webmaster(a)colosource.com > > __________________________________________________ > Do You Yahoo!? > Get email at your own domain with Yahoo! Mail. > http://personal.mail.yahoo.com/ > ===== Kevin Facinelli www.colosource.com webmaster(a)colosource.com __________________________________________________ Do You Yahoo!? Get email at your own domain with Yahoo! Mail. http://personal.mail.yahoo.com/

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NANOG 22 Hotel Information
by Carol Wadsworth 23 Mar '01

23 Mar '01

Meeting registration for NANOG 22 (May 20-22) will open on Monday, April 2. For those of you who want to make your hotel reservation in the interim, details follow: Meeting location and overnight accommodations: DoubleTree Paradise Valley Resort 5401 North Scottsdale Road Scottsdale, Arizona 85250 Room block name: NANOG Dates: May 19-22, 2001 Rate: $119 In-house Reservations: 480-947-5400 Central Reservations (tollfree): 800-222-TREE Note: The special rate will also apply if you want to stay any extra days prior to or following the meeting. The Call for Presentations announcement can be found at: http://www.nanog.org/mtg-0105/call22.html http://www.nanog.org/mtg-0105/call22.pdf The proposal deadline is April 9. Hope to see you in Scottsdale! Carol Wadsworth Merit Network, Inc.

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Advanced Warning: Qwest/Lucent ATM upgrade
by Sean Donelan 23 Mar '01

23 Mar '01

Routing may be weirder than normal this evening. Qwest is upgrading their Lucent ATM switches to fix a bug, and needs to shutdown their entire ATM backbone for a couple of hours. Qwest hasn't responded to my e-mails asking what is happening, but other ISPs have outlined alternative routes they will be using. Most will try to maintain service by additional peering, deaggregated routes, or temporary third-party transit. Other providers use Lucent ATM switches. I don't know if they will also need to upgrade their networks at some time in the future to fix the same problem.

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Real world Anti-DDOS attack practice.
by Yu Ning 23 Mar '01

23 Mar '01

Hi nanog, I'm sorry if I raise a cliché topic, but I've searched the nanog archive and get no satisfied answer. The question is quite simple, what's the best practice if my downstream customer report a heavy DDOS attack (icmp based, not source addr. spoofing)? Yes, to filter out the packet via ACL, but the impact on oc3/48 link with ACL packet filtering sounds to be a nightmare. If there is any effective practice to prevent my engineer from patching the router here and there via packet ACL ? Yes again via dCAR to rate-limiting the icmp traffic, but as soon as you mention the packet-filtering method, it seems as if my router is in smoke. Then I wonder what my US counterpart do to beat DDOS attack to their customer? Best real world practice ? How about tier-1 like UUNet ? thanks for any input. -------------------------------------------- (Mr.) Yu Ning, Chief Engineer ChinaNET Sr. Support & New Service Dev. Data Communication Bureau, China Telecom Beijing, P.R.China +86-10-62072357/62072354 --------------------------------------------

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Re: Clear Channel on a T1
by Ron Buchalski 23 Mar '01

23 Mar '01

Good point, Phil. I believe that the modern T1 spec states that a maximum or 45 zeros can be sent before the CSU will inject a '1'. I don't have a spec handy to verify it. Of course, with B8ZS, you'll never approach this long string of zeros on the line, so it's a moot point. B8ZS replaces eight zeros with 4/4 ones/zeros, in a known bipolar violation pattern. This will insure that ones' density is met on the line, and the circuit endpoints can replace the injected ones with eight zeros and restore the bit patterns of the modified DS0s. It's also the source of grief when a telco provisions one segment of a T1 circuit without B8ZS. When this non-B8ZS segment sees too many zeros, ones will be injected in the stream, corrupting the data. Of course, this NEVER happens anymore...right? ;-) -rb >From: Phillip Vandry <vandry(a)TZoNE.ORG> >To: "Ron Buchalski" <rbuchals(a)hotmail.com> >CC: nanog(a)merit.edu >Subject: Re: Clear Channel on a T1 >Date: Thu, 22 Mar 2001 18:04:46 -0500 (EST) > > >Please correct me if I'm wrong (because I'm not _that_ certain of this) but >I think you still need the 1's density to maintain timing even in the >absence of repeaters. If you have a whole bunch of zero bits in a row the >voltage on the line will remain 0 for the length of the series. You get no >indication of when one bit ends and another starts. If the string of zeroes >is very long, the receiver might miscount the number of 0 bits that the >sequence represents (more than intended if its clock is running faster than >the sender's, less than intended otherwise). You don't have this problem >with a long string of 1 bits because the voltage transitioning from + to - >or back at every bit boundary. _________________________________________________________________ Get your FREE download of MSN Explorer at http://explorer.msn.com

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Re: rumors about rolling blackouts in East?
by Steven M. Bellovin 23 Mar '01

23 Mar '01

In message <Pine.SGI.4.10.10103231018451.2506393-100000(a)guinness.cs.stevens-tec h.edu>, Subhendu Ghosh writes: > > >I just heard a couple of folks talking about possible power problems in >the East this summer? - NY/NJ areas.. > >Any confirmation or just rumors.. There is some concern. New York City is planning on deploying ~10 "temporary" generators on barges around the city to provide extra generating capacity. --Steve Bellovin, http://www.research.att.com/~smb

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rumors about rolling blackouts in East?
by Subhendu Ghosh 23 Mar '01

23 Mar '01

I just heard a couple of folks talking about possible power problems in the East this summer? - NY/NJ areas.. Any confirmation or just rumors.. -Subhendu

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