September 2004 - Test - lists.nanog.org

sprint.net Email problems?
by Daniel Roesen 17 Sep '04

17 Sep '04

Hi, depending on the IP address space from where I'm trying to reach the two MX for @sprint.net, I'm getting either: - no TCP connection at all (Connection refused) - a TCP session, but not even a SMTP greeting banner - a SMTP session, but as response to RCPT TO a 550 Access denied For the third case, doesn't seem to matter which email address I try (did ipv6-support@, rrockell@ and postmaster@). This is persistant now for over 12 hours... Best regards, Daniel

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The Cidr Report
by cidr-report＠potaroo.net 17 Sep '04

17 Sep '04

This report has been generated at Fri Sep 17 21:44:13 2004 AEST. The report analyses the BGP Routing Table of an AS4637 (Reach) router and generates a report on aggregation potential within the table. Check http://www.cidr-report.org/as4637 for a current version of this report. Recent Table History Date Prefixes CIDR Agg 10-09-04 143329 98595 11-09-04 143556 98696 12-09-04 143474 98684 13-09-04 143397 98654 14-09-04 143451 98833 15-09-04 143615 98857 16-09-04 143660 98839 17-09-04 143628 98794 AS Summary 17981 Number of ASes in routing system 7313 Number of ASes announcing only one prefix 1386 Largest number of prefixes announced by an AS AS7018 : ATTW AT&T WorldNet Services 86646016 Largest address span announced by an AS (/32s) AS721 : DNIC DoD Network Information Center Aggregation Summary The algorithm used in this report proposes aggregation only when there is a precise match using the AS path, so as to preserve traffic transit policies. Aggregation is also proposed across non-advertised address space ('holes'). --- 17Sep04 --- ASnum NetsNow NetsAggr NetGain % Gain Description Table 143741 98842 44899 31.2% All ASes AS18566 739 7 732 99.1% CVAD Covad Communications AS4134 783 172 611 78.0% CHINANET-BACKBONE No.31,Jin-rong Street AS4323 773 212 561 72.6% TWTC Time Warner Telecom AS7018 1386 958 428 30.9% ATTW AT&T WorldNet Services AS7843 489 100 389 79.6% ADELPH-13 Adelphia Corp. AS22773 398 21 377 94.7% CXA Cox Communications Inc. AS27364 395 36 359 90.9% ARMC Armstrong Cable Services AS6467 385 30 355 92.2% ACSI e.spire Communications, Inc. AS701 1244 897 347 27.9% UU UUNET Technologies, Inc. AS22909 366 45 321 87.7% CMCS Comcast Cable Communications, Inc. AS1239 950 634 316 33.3% SPRN Sprint AS6197 718 404 314 43.7% BNS-14 BellSouth Network Solutions, Inc AS9929 337 33 304 90.2% CNCNET-CN China Netcom Corp. AS11172 355 52 303 85.4% Alestra AS17676 348 45 303 87.1% JPNIC-JP-ASN-BLOCK Japan Network Information Center AS6347 399 99 300 75.2% SAVV SAVVIS Communications Corporation AS6478 358 71 287 80.2% ATTW AT&T WorldNet Services AS4355 381 99 282 74.0% ERSD EARTHLINK, INC AS21502 268 3 265 98.9% ASN-NUMERICABLE NUMERICABLE is a cabled network in France, AS4766 530 266 264 49.8% KIXS-AS-KR Korea Telecom AS14654 259 6 253 97.7% WAYPOR-3 Wayport AS9443 359 110 249 69.4% INTERNETPRIMUS-AS-AP Primus Telecommunications AS6140 364 116 248 68.1% IMPSA ImpSat AS2386 829 596 233 28.1% ADCS-1 AT&T Data Communications Services AS25844 244 16 228 93.4% SASMFL-2 Skadden, Arps, Slate, Meagher & Flom LLP AS9583 530 308 222 41.9% SIFY-AS-IN Sify Limited AS6198 429 210 219 51.0% BNS-14 BellSouth Network Solutions, Inc AS721 713 507 206 28.9% DNIC DoD Network Information Center AS6327 228 29 199 87.3% SHAWC-2 Shaw Communications Inc. AS22291 261 69 192 73.6% CC04 Charter Communications Total 15818 6151 9667 61.1% Top 30 total Possible Bogus Routes 24.138.80.0/20 AS11260 AHSICHCL Andara High Speed Internet c/o Halifax Cable Ltd. 24.246.0.0/17 AS7018 ATTW AT&T WorldNet Services 24.246.38.0/24 AS25994 NPGCAB NPG Cable, INC 24.246.128.0/18 AS7018 ATTW AT&T WorldNet Services 64.46.4.0/22 AS11711 TULARO TULAROSA COMMUNICATIONS 64.46.27.0/24 AS8674 NETNOD-IX Netnod Internet Exchange Sverige AB 64.46.34.0/24 AS3408 64.46.63.0/24 AS7850 IHIGHW iHighway.net, Inc. 64.83.96.0/19 AS26956 NETFR NetFree Communications 66.114.0.0/19 AS16526 BIRCHT Birch Telecom, Inc. 69.26.32.0/19 AS17307 VIRTEL-15 Virtela Communications 111.0.0.0/24 AS7563 KII-AS Korea Internet Infrastructure 132.0.0.0/10 AS721 DNIC DoD Network Information Center 137.0.0.0/13 AS721 DNIC DoD Network Information Center 138.136.0.0/13 AS721 DNIC DoD Network Information Center 158.0.0.0/13 AS721 DNIC DoD Network Information Center 192.30.93.0/24 AS17757 HPAUS-AP HP Australia 192.30.94.0/24 AS17757 HPAUS-AP HP Australia 192.30.127.0/24 AS719 LANLINK Elisa Oyj 192.40.105.0/24 AS5515 SONERA-GLOBAL-IP Sonera Solution Autonomous System 192.43.230.0/24 AS4738 SAARDNET-AS South Australian Academic Research and Development Network 192.44.0.0/19 AS702 AS702 MCI EMEA - Commercial IP service provider in Europe 192.70.164.0/24 AS25689 NRCC-2 National Research Council of Canada 192.80.64.0/19 AS1 LVLT Level 3 Communications, Inc. 192.81.182.0/24 AS719 LANLINK Elisa Oyj 192.81.183.0/24 AS719 LANLINK Elisa Oyj 192.81.184.0/24 AS719 LANLINK Elisa Oyj 192.119.135.0/24 AS270 NASA National Aeronautics and Space Administration 192.124.252.0/22 AS680 DFN-IP service G-WiN 192.133.6.0/24 AS4004 GLOBALONE-EQUANT-UK Equant UK & Greece Autonomous System 192.135.50.0/24 AS7018 ATTW AT&T WorldNet Services 192.136.71.0/24 AS719 LANLINK Elisa Oyj 192.136.79.0/24 AS719 LANLINK Elisa Oyj 192.138.208.0/20 AS1 LVLT Level 3 Communications, Inc. 192.153.144.0/21 AS721 DNIC DoD Network Information Center 192.172.0.0/19 AS721 DNIC DoD Network Information Center 192.188.208.0/20 AS721 DNIC DoD Network Information Center 192.190.16.0/21 AS1 LVLT Level 3 Communications, Inc. 192.243.32.0/23 AS2044 PALINA Palin Aquisitions Inc. 196.1.68.0/24 AS3356 LEVEL3 Level 3 Communications 196.1.104.0/24 AS17495 GATEWAY-AP BROADBAND WIRELESSS INTERNET SERVICE PROVIDER 196.1.105.0/24 AS2697 ERX-ERNET-AS National Centre for Software Technology 196.1.106.0/24 AS2697 ERX-ERNET-AS National Centre for Software Technology 196.1.109.0/24 AS2697 ERX-ERNET-AS National Centre for Software Technology 196.1.110.0/24 AS2697 ERX-ERNET-AS National Centre for Software Technology 196.1.111.0/24 AS2697 ERX-ERNET-AS National Centre for Software Technology 196.1.114.0/24 AS2697 ERX-ERNET-AS National Centre for Software Technology 196.2.95.0/24 AS8668 TELONE-AS TelOne Zimbabwe P/L 196.3.65.0/24 AS4471 MICA-5 Michigan Internet Cooperative Association 196.12.32.0/24 AS7633 SOFTNET-AS-AP Software Technology Parks of India 196.12.33.0/24 AS7633 SOFTNET-AS-AP Software Technology Parks of India 196.12.34.0/24 AS7633 SOFTNET-AS-AP Software Technology Parks of India 196.12.36.0/24 AS7633 SOFTNET-AS-AP Software Technology Parks of India 196.12.37.0/24 AS7633 SOFTNET-AS-AP Software Technology Parks of India 196.12.38.0/24 AS7633 SOFTNET-AS-AP Software Technology Parks of India 196.12.39.0/24 AS7633 SOFTNET-AS-AP Software Technology Parks of India 196.12.40.0/24 AS7633 SOFTNET-AS-AP Software Technology Parks of India 196.12.41.0/24 AS7633 SOFTNET-AS-AP Software Technology Parks of India 196.12.42.0/24 AS7633 SOFTNET-AS-AP Software Technology Parks of India 196.12.43.0/24 AS7633 SOFTNET-AS-AP Software Technology Parks of India 196.12.44.0/24 AS7633 SOFTNET-AS-AP Software Technology Parks of India 196.12.45.0/24 AS7633 SOFTNET-AS-AP Software Technology Parks of India 196.12.46.0/24 AS7633 SOFTNET-AS-AP Software Technology Parks of India 196.12.47.0/24 AS7633 SOFTNET-AS-AP Software Technology Parks of India 196.12.48.0/24 AS7633 SOFTNET-AS-AP Software Technology Parks of India 196.12.49.0/24 AS7633 SOFTNET-AS-AP Software Technology Parks of India 196.12.50.0/24 AS7633 SOFTNET-AS-AP Software Technology Parks of India 196.12.51.0/24 AS7633 SOFTNET-AS-AP Software Technology Parks of India 196.12.52.0/24 AS7633 SOFTNET-AS-AP Software Technology Parks of India 196.12.53.0/24 AS7633 SOFTNET-AS-AP Software Technology Parks of India 196.12.54.0/24 AS7633 SOFTNET-AS-AP Software Technology Parks of India 196.12.55.0/24 AS7633 SOFTNET-AS-AP Software Technology Parks of India 196.12.56.0/24 AS7633 SOFTNET-AS-AP Software Technology Parks of India 196.12.57.0/24 AS7633 SOFTNET-AS-AP Software Technology Parks of India 196.12.58.0/24 AS7633 SOFTNET-AS-AP Software Technology Parks of India 196.12.59.0/24 AS7633 SOFTNET-AS-AP Software Technology Parks of India 196.12.62.0/24 AS7633 SOFTNET-AS-AP Software Technology Parks of India 196.12.63.0/24 AS7633 SOFTNET-AS-AP Software Technology Parks of India 198.17.1.0/24 AS2513 JPNIC-ASBLOCK-AP JPNIC 198.22.61.0/24 AS9792 CIS-AS-AP Corinthian Internet Services 198.23.26.0/24 AS4390 BELLAT-7 Bell Atlantic, Inc. 198.48.0.0/22 AS23754 CITYLINK-AS-NZ Citylink 198.51.210.0/24 AS4736 MAGNADATA-AU Magnadata Australia Pty Ltd 198.97.72.0/21 AS721 DNIC DoD Network Information Center 198.97.80.0/20 AS721 DNIC DoD Network Information Center 198.97.88.0/24 AS89 NUSC-1 Naval Underwater Systems Center 198.97.208.0/23 AS721 DNIC DoD Network Information Center 198.97.209.0/24 AS1727 RITSC RITSC-PACSW 198.97.240.0/20 AS721 DNIC DoD Network Information Center 198.97.247.0/24 AS3475 DEPART-52 Department of the Navy 198.99.173.0/24 AS703 UNSPECIFIED UUNET 198.101.4.0/22 AS721 DNIC DoD Network Information Center 198.136.32.0/20 AS19329 MCBCC Martin County Board of County Commissioners 198.142.0.0/16 AS4804 MPX-AS Microplex PTY LTD 198.142.0.0/19 AS4804 MPX-AS Microplex PTY LTD 198.142.5.0/24 AS4804 MPX-AS Microplex PTY LTD 198.142.12.0/24 AS4804 MPX-AS Microplex PTY LTD 198.142.15.0/24 AS4804 MPX-AS Microplex PTY LTD 198.142.19.0/24 AS4804 MPX-AS Microplex PTY LTD 198.142.32.0/19 AS4804 MPX-AS Microplex PTY LTD 198.142.39.0/24 AS4804 MPX-AS Microplex PTY LTD 198.142.40.0/24 AS4804 MPX-AS Microplex PTY LTD 198.142.44.0/24 AS4804 MPX-AS Microplex PTY LTD 198.142.64.0/19 AS4804 MPX-AS Microplex PTY LTD 198.142.96.0/19 AS4804 MPX-AS Microplex PTY LTD 198.142.98.0/24 AS4804 MPX-AS Microplex PTY LTD 198.142.104.0/24 AS4804 MPX-AS Microplex PTY LTD 198.142.114.0/24 AS4804 MPX-AS Microplex PTY LTD 198.142.128.0/19 AS4804 MPX-AS Microplex PTY LTD 198.142.160.0/19 AS4804 MPX-AS Microplex PTY LTD 198.142.176.0/24 AS4804 MPX-AS Microplex PTY LTD 198.142.192.0/19 AS4804 MPX-AS Microplex PTY LTD 198.142.224.0/19 AS4804 MPX-AS Microplex PTY LTD 198.144.32.0/19 AS3998 CITY CityNet, Inc. 198.161.87.0/24 AS6539 GTGR GT Group Telecom Services Corp. 198.161.165.0/24 AS852 AGTA Telus Advanced Communications 198.163.155.0/24 AS684 MRN Manitoba Regional Network 198.167.0.0/16 AS7456 INS-51 Interhop Network SERVICES Inc. 198.167.163.0/24 AS15290 ACCA-2 Allstream Corp. Corporation Allstream 198.168.0.0/16 AS701 UU UUNET Technologies, Inc. 198.169.0.0/16 AS803 SASK SaskTel 198.232.133.0/24 AS23075 SKOTOS Skotos Tech, Inc 199.10.0.0/16 AS721 DNIC DoD Network Information Center 199.60.0.0/20 AS271 UBC-3 University of British Columbia 199.96.44.0/23 AS19092 360NE-1 360Networks (USA) Inc. 199.96.46.0/24 AS19092 360NE-1 360Networks (USA) Inc. 199.114.0.0/18 AS568 DISOUN DISO-UNRRA 199.114.0.0/21 AS721 DNIC DoD Network Information Center 199.114.128.0/18 AS721 DNIC DoD Network Information Center 199.114.130.0/24 AS721 DNIC DoD Network Information Center 199.114.132.0/24 AS721 DNIC DoD Network Information Center 199.114.134.0/24 AS1913 DLA-8 Defense Logistics Agency 199.114.136.0/24 AS1913 DLA-8 Defense Logistics Agency 199.114.138.0/24 AS721 DNIC DoD Network Information Center 199.114.140.0/24 AS3544 DISAUN DISA/UNRRA 199.114.142.0/24 AS721 DNIC DoD Network Information Center 199.114.144.0/24 AS721 DNIC DoD Network Information Center 199.114.148.0/24 AS721 DNIC DoD Network Information Center 199.114.150.0/24 AS721 DNIC DoD Network Information Center 199.114.152.0/24 AS1913 DLA-8 Defense Logistics Agency 199.114.154.0/24 AS1733 ADP-41 AF DDN PMO 199.114.156.0/24 AS1913 DLA-8 Defense Logistics Agency 199.114.160.0/24 AS1733 ADP-41 AF DDN PMO 199.120.32.0/19 AS16582 NXLI NEXTLEVEL INTERNET, INC. 199.121.0.0/16 AS721 DNIC DoD Network Information Center 199.123.0.0/18 AS721 DNIC DoD Network Information Center 199.123.16.0/20 AS721 DNIC DoD Network Information Center 199.123.80.0/21 AS721 DNIC DoD Network Information Center 199.189.32.0/19 AS7332 IQUEST IQuest Internet 199.197.8.0/22 AS21814 PARSON-18 Parsons Corp. 199.202.0.0/16 AS701 UU UUNET Technologies, Inc. 202.47.1.0/24 AS7491 PI-PH-AS-AP PI-PHILIPINES 202.70.28.0/24 AS4515 ERX-STAR Star Internet Services Ltd. 202.73.128.0/22 AS4058 LINKAGENET-AP CPCNet Hong Kong Ltd. 202.81.96.0/19 AS10113 DATAFAST-AP DATAFAST TELECOMMUNICATIONS LTD 202.81.109.0/24 AS7657 TIG-US-PAS-AP The Internet Group Limited 202.81.121.0/24 AS10113 DATAFAST-AP DATAFAST TELECOMMUNICATIONS LTD 202.93.0.0/20 AS4134 CHINANET-BACKBONE No.31,Jin-rong Street 202.133.3.0/24 AS9335 CIP-JAPAN-AS-AP ATT IPlus 202.164.224.0/19 AS7599 IPXC-AS-AP IP Exchange 203.32.4.0/23 AS7617 203.62.0.0/17 AS7572 AARNET-ACT-RNO Australian Academic and Reasearch Network (AARNet) 203.84.192.0/19 AS17433 PHILWEB-AP PhilWeb.Com, Inc. 203.84.192.0/20 AS17433 PHILWEB-AP PhilWeb.Com, Inc. 203.84.208.0/20 AS17433 PHILWEB-AP PhilWeb.Com, Inc. 203.210.69.0/24 AS17536 PRODIGY-AS-AP Prodidgy Telecommunications 204.154.125.0/24 AS3952 TELLAB-1 TELLABS Operations, Inc. 204.154.126.0/24 AS3952 TELLAB-1 TELLABS Operations, Inc. 204.154.127.0/24 AS3952 TELLAB-1 TELLABS Operations, Inc. 204.194.110.0/23 AS30653 EXOBI Exobit Networks Inc. 204.196.0.0/14 AS1 LVLT Level 3 Communications, Inc. 205.150.0.0/15 AS701 UU UUNET Technologies, Inc. 205.159.72.0/24 AS1660 ANSCOM-5 ANS Communications 206.167.57.0/24 AS376 RISQR-3 Reseau Interordinateurs Scientique Quebecois (RISQ) 206.191.64.0/18 AS15290 ACCA-2 Allstream Corp. Corporation Allstream 206.251.69.0/24 AS27429 TIL-33 Telesat International Ltd. 206.253.190.0/23 AS8123 POLYBA Polybase 207.231.96.0/19 AS11194 NUNETI NuNet Inc 208.81.187.0/24 AS19194 SNL-8 Sentris Network LLC 209.143.192.0/18 AS3561 CWU Cable & Wireless USA 209.172.0.0/18 AS7770 TRTI Triton Technologies, Inc. 209.205.69.0/24 AS21578 Universidad autonoma de Bucaramanga 209.205.70.0/24 AS21578 Universidad autonoma de Bucaramanga 209.205.81.0/24 AS15066 SkyNet de Colombia S.A. 209.205.82.0/24 AS15066 SkyNet de Colombia S.A. 209.205.84.0/24 AS15066 SkyNet de Colombia S.A. 209.213.32.0/19 AS10629 INS-52 Inter-Pacific Network Services 209.213.48.0/24 AS10629 INS-52 Inter-Pacific Network Services 209.213.49.0/24 AS10629 INS-52 Inter-Pacific Network Services 209.213.50.0/24 AS10629 INS-52 Inter-Pacific Network Services 209.213.51.0/24 AS10629 INS-52 Inter-Pacific Network Services 209.213.55.0/24 AS10629 INS-52 Inter-Pacific Network Services 209.213.56.0/24 AS10629 INS-52 Inter-Pacific Network Services 209.251.0.0/19 AS11036 SISCOM-1 SISCOM, Inc 216.14.64.0/20 AS3561 CWU Cable & Wireless USA 216.37.110.0/23 AS4264 CERFN California Education and Research Federation Network 216.96.128.0/18 AS7018 ATTW AT&T WorldNet Services 216.145.130.0/24 AS11937 TRXI TRX Inc. 216.145.132.0/24 AS11937 TRXI TRX Inc. 216.145.134.0/24 AS11937 TRXI TRX Inc. 216.145.156.0/24 AS20304 JIS-32 JVLNET Internet Services 216.145.158.0/24 AS20304 JIS-32 JVLNET Internet Services 216.145.176.0/21 AS20304 JIS-32 JVLNET Internet Services 216.145.177.0/24 AS20304 JIS-32 JVLNET Internet Services 216.145.178.0/24 AS20304 JIS-32 JVLNET Internet Services 216.145.184.0/21 AS10758 INWAVE INWave Internet, Inc 216.145.200.0/21 AS20304 JIS-32 JVLNET Internet Services 216.186.151.0/24 AS3356 LEVEL3 Level 3 Communications 216.186.152.0/21 AS3356 LEVEL3 Level 3 Communications 216.186.160.0/23 AS3356 LEVEL3 Level 3 Communications 216.186.164.0/22 AS3356 LEVEL3 Level 3 Communications 216.186.192.0/22 AS3356 LEVEL3 Level 3 Communications 216.186.198.0/23 AS3356 LEVEL3 Level 3 Communications 216.186.248.0/23 AS3356 LEVEL3 Level 3 Communications Please see http://www.cidr-report.org for the full report ------------------------------------ Copies of this report are mailed to: nanog(a)merit.edu eof-list(a)ripe.net apops(a)apops.net routing-wg(a)ripe.net afnog(a)afnog.org swinog(a)swinog.ch

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Network Configuration Management Practices
by Carl W.Kalbfleisch 17 Sep '04

17 Sep '04

Hi, I am doing some independent research on Network Configuration Management Practices. I am trying to get information from service providers and enterprises on how they handle this function. I have the following specific questions: 1) What configuration issues most affect the performance and reliability of your network? 2) What are you doing to alleviate these problems? 3) What software are you using to manage network configurations for your routers, switches, firewalls, load balancers, servers, etc? Do you use home grown scripts? Or do you use commercial applications (if so, which ones) 4) Does your configuration management software integrate with your network fault and performance management system? If so, what level of integration do you have? If not, is this integration something you desire? 5) What functions are you most lacking in your configuration management software tools? Any response and input will be greatly appreciated. Thanks, Carl -- Carl W. Kalbfleisch www.kalbfleisch.us

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RE: Multi-link Frame Relay OR Load Balancing
by kwallace＠pcconnection.com 16 Sep '04

16 Sep '04

You may want to consider a DS3. In terms of access cost, the break even point is usually right around 8 DS1's. The only caveat is you will need a fiber connection to a LEC or CLEC to provide a connection. If you want to stay with the DS1 route, in addition to frame, you may want to consider ATM - IMA. That will bond everything into one nice 9mb connection, and will downspeed if a few DS1's go down. Keith -----Original Message----- From: owner-nanog(a)merit.edu [mailto:owner-nanog@merit.edu] Sent: Thursday, September 16, 2004 5:44 PM To: nanog(a)merit.edu Subject: Multi-link Frame Relay OR Load Balancing We are in the process of updating our internet connection to 8 t1's bound together. Due to price, our options have been narrowed to AT&T and MCI. I have two questions: 1. Which technology is better for binding t1's: multi link frame relay (mci's) or load balancing (att's) 2. Which company has a better pop in Atlanta: mci or att? We are in the Chattanooga TN area and our current connection is 6 t1's through att but they will only bond 4 so they are split 4 and 2. Bryce Enevoldson Information Processing Southern Adventist University

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Re: Multi-link Frame Relay OR Load Balancing
by Daniel Senie 16 Sep '04

16 Sep '04

At 05:52 PM 9/16/2004, Christopher L. Morrow wrote: >On Thu, 16 Sep 2004, Bryce Enevoldson wrote: > > > > > We are in the process of updating our internet connection to 8 t1's bound > > together. Due to price, our options have been narrowed to AT&T and MCI. > > I have two questions: > > 1. Which technology is better for binding t1's: multi link frame relay > > (mci's) or load balancing (att's) > >of course, as always... not mci's view on the world ;) > >depends on what you want... do you want more than a 1.5mbps flow to pass? >or do you just want to get 9mb of bandwidth and you don't care about max >flow size? The MFR stuff will allow your link to look like a 9mb path, not >6 1.5mb paths. The load balancing makes it look like 6 l.5mb paths. > > > 2. Which company has a better pop in Atlanta: mci or att? > >i'll avoid this question since I'm not equiped to answer as anything but a >marketting answer :) > > > > > We are in the Chattanooga TN area and our current connection is 6 t1's > > through att but they will only bond 4 so they are split 4 and 2. > > > >Some folks have said in the last that over 6mb of bandwidth it might be >better/cheaper/easier to just get a fractional/burstable DS3 to meet your >needs. One other consideration is the quality and reliability of the local loops. Does your local telco manage to keep T-1's running well? DS-3's? If you have multiple circuits, you may wind up being able to ride through equipment failures in the local loops (or not, depends a lot on how the loops are built). I'm not arguing one or the otehr is better for reliability, but it's something to ask before signing a contract.

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RE: Multi-link Frame Relay OR Load Balancing
by Cody Lerum 16 Sep '04

16 Sep '04

If your using Cisco hardware make sure that the IOS versions used on both sides support 8 next-hops for load balancing. 12.3(9) on a 7206 only supported 6 in one situation, and thus the Juniper on one end forwarded over all 8 T1's where the 7206 only forwarded over 6. >From my research at the time it appears that the number off next-hops supported varied by IOS ver. -C -----Original Message----- From: owner-nanog(a)merit.edu [mailto:owner-nanog@merit.edu] On Behalf Of Christopher L. Morrow Sent: Thursday, September 16, 2004 3:53 PM To: Bryce Enevoldson Cc: nanog(a)merit.edu Subject: Re: Multi-link Frame Relay OR Load Balancing On Thu, 16 Sep 2004, Bryce Enevoldson wrote: > > We are in the process of updating our internet connection to 8 t1's > bound together. Due to price, our options have been narrowed to AT&T and MCI. > I have two questions: > 1. Which technology is better for binding t1's: multi link frame > relay > (mci's) or load balancing (att's) of course, as always... not mci's view on the world ;) depends on what you want... do you want more than a 1.5mbps flow to pass? or do you just want to get 9mb of bandwidth and you don't care about max flow size? The MFR stuff will allow your link to look like a 9mb path, not 6 1.5mb paths. The load balancing makes it look like 6 l.5mb paths. > 2. Which company has a better pop in Atlanta: mci or att? i'll avoid this question since I'm not equiped to answer as anything but a marketting answer :) > > We are in the Chattanooga TN area and our current connection is 6 t1's > through att but they will only bond 4 so they are split 4 and 2. > Some folks have said in the last that over 6mb of bandwidth it might be better/cheaper/easier to just get a fractional/burstable DS3 to meet your needs. -Chris

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ARIN to allocate from 71.0.0.0/8 and 72.0.0.0/8
by Leslie Nobile 16 Sep '04

16 Sep '04

Hello- ARIN received the IPv4 address blocks 71.0.0.0/8 and 72.0.0.0/8 from the IANA on Aug. 2, 2004. In the near future, ARIN will begin making allocations from these new blocks. This will include allocations of /20 and shorter prefixes, according to ARIN's minimum allocation policy. You may wish to adjust any filters you have in place accordingly. For informational purposes, a list of ARIN's currently administered IP blocks can be found under "CIDR Blocks" at: http://www.arin.net/statistics/index.html Regards, Leslie Nobile Director, Registration Services American Registry for Internet Numbers (ARIN)

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Re: RIP in Operation
by sthaug＠nethelp.no 16 Sep '04

16 Sep '04

> We use RIP extensively on the edges of our network to build a Layer3 > routed overlay between 3550/3750 switches and our 6500-based core. At > $2k/list for the EMI license PER SWITCH ($4k for 3750s), it just wasn't > feasible for us to use EMI just for OSPF when all we were really > announcing was a loopback and a /30 connected network. > > We route filter and tune the RIP times down quite a bit. Meets our needs > on the edges. I assume you mean RIPv2, ie. classless. With that caveat, I can certainly see why RIP would be used. Steinar Haug, Nethelp consulting, sthaug(a)nethelp.no

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RIP in Operation
by Abhishek Verma 16 Sep '04

16 Sep '04

Hi, I am sure that there would be very few people running RIP in their networks, but since the IETF RIP mailing list is dead, and also because its more of an operational question, the Nanog list felt most appropriate to me for the following post. Why would you, as an operator, recieve RIPv2 Request messages? The only reason that comes to my mind is when a remote RIPv2 router has just come up. That time its going to multicast this message on all its interfaces configured to run RIP. This is the *only* reason that comes to my mind. However, there is text in the RFC 2453 that states that RIP can use this message to request specific networks also. It also states that such a request can only be made by a diagonistic software and cannot be used for routing. My doubt is, how can a diagnostic software, use the services of RIP for doing that? I assume (please correct me if i am wrong) that the RIP requests are only then, used for requesting the entire routing tables, and nothing else. The 'diagnostics' story sounds too far fetched to me! Thanks, Abhishek V. P.S. I tried googling but nothing came up. -- Class of 2004 Institue Of Technology, BHU Varanasi - India

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Lucent/Ascend/Cascade B-STDX images
by Brian Wallingford 16 Sep '04

16 Sep '04

I've exhausted all my resources, and have not found a definitive method for upgrading a production switch from cp40 to cp50. Is it as simple as hot-swapping the standby, ignoring the capability mismatch, changing the active cp, then doing the same for the master cp? Also, curious if the images for these blades are interchangeable. Any input would be most appreciated. cheers, brian

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