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Why do you use AS path prepending?
by Hui Wang 06 Sep '04

06 Sep '04

Hi, I learned from some measurement data that many ISPs are now using AS path prepending. I am very curious about the goal of these actions. Intuitively, I guess there are following reasons: 1. because of some business reasons, one ISP dislikes the traffic to some destination prefixes to go through it. Then this ISP prepends the routes to these prefixes. 2. for the traffic engineering purpose. The prepending is performed because ISPs want to balance the inbound load. 3. for performance purpose. Although the route via ASa has the shortest AS path, the performance of this path is not very good. Then the ISP prepends all routes via ASa. What do you think about this question? Why do you use AS path prepending? Best, Flora

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RE: Best Practices for Enterprise networks
by Michel Py 04 Sep '04

04 Sep '04

>> Tracy Smith wrote: >> Specifically, to NAT or not to NAT? This is not much of an issue anymore. If you receive IP addresses from your ISP, not natting would be foolish. Even if you do own your own public IP space, the NAT issues are fundamentally no different than the firewall ones and since not having a firewall is not an option, most enterprises will indeed NAT some of their subnets in their firewalls, whether or not they have or could easily obtain public space. > At what point should NAT-ting be performed ... > exclusively at the Egress point If there is only one egress point, indeed (typically at the firewall that's between the outside router and the inside router). If there are multiple egress points it's more interesting. There are multiple designs. > about firewalling - centralized/decentralized? Greatly varies depending the design and requirements of a given enterprise. > Iljitsch van Beijnum wrote: > Fortunately, I've never been in the position > to make such decisions, That's when you understand the real meaning of FUD: when you @55 and/or your job are on the line ;-) > but I can tell you one thing: if you have multiple connections > to the internet, you had better make sure that your NATs and > firewalls are equipped to handle the case where you send a > packet out through connection A and the reply comes back > through connection B. Indeed. > Paul Ferguson wrote: > Asymmetric paths are a fact of life in the Internet. Not for enterprise operators except the largest ones. Asymmetric traffic does happen in the core, where there are no firewalls or NATs; as far as the edge is concerned though I know several companies that multihome to two or more ISPs but only in one location, largely because they don't want to deal with NAT/firewall issues. Although it can work, it requires extra engineering and most of the time a fat pipe to replicate state information between the sites. Michel.

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RE: Senator Diane Feinstein Wants to know about the Benefits of P2P
by Michel Py 04 Sep '04

04 Sep '04

>> Michel Py wrote: >> In other words: as of today a large part of the bandwidth is >> allocated to building everyone's collection of files. This >> might gradually change to become bandwidth being used only >> for incremental updates as huge local file libraries become >> common place. > Peter Galbavy wrote: > But this possible assumes that production of new media will > either slow or stay at a constant rate. Not necessarily, IMHO. Maybe, maybe not. Number of Google hits for: Rock and Roll: 6,230,000 Jazz: 25,400,000 Disco: 11,600,000 Hard rock: 8,430,000 Heavy metal: 7,210,000 Pr0n: 102,000,000 (spelled the right way :-) There are only 24 hours in a day and I don't have 100 years to live. > The never-yet-realised side effect of all this distribution > capacity is that possible many more artists will have access > to the listeners / viewers and in more narrow niches than the > existing system allows. Indeed, but there are two limits to this and one personal observation: ymmv, but last time I walked into a record store I found way more records by people I haven't even heard the name before than from people I remotely heard about. I personally don't feel oppressed by the lack of diversity in the existing system; it is not totally fair, but the other side of the coin is that I have only that much time allocated to watching/listening to what most other people have dumped. Reality check: I never illegally downloaded any copyright-protected content, nor anybody reading this, heaven forbid; we all are saints. I am wondering though: among these criminals that illegally download music (possibly behind a NAT box, double crime in certain states), how many did download because they heard it on the radio (who does pay hefty royalties)? The two limits are: 1. How many songs can you listen to or how movies can you watch in a day? Let's put this a way everyone understand: how much good does it do to you if you can pirate 20 movies a day but only watch two? 2. Most people do develop tastes in certain genres and/or artists: for example you will not find any Britney Spears nor Metallica on my disks; I did download some due to the buzz factor, and I did not like it so I deleted it. Remember that what we are talking about is bandwidth: just because something becomes available on a P2P network does not mean that I will download it. There is actually some content that you would have to pay me in order to download watch/listen to. Information overload, anyone? To re-use your own word: niche. Niche markets do not shape an industry; what shapes our industry (which is moving packets, and sometimes makes people call us packet movers, short of box movers or carpet baggers) _is_ moving packets. Bittorrent and eDonkey means something to us, not two dudes FTPing a 40 year-old 15-minute b&w movie sampled at 10fps@160x100. Bittorrent and eDonkey used to swap pr0n in French or Swedish means more to us in terms of bandwidth than M$ XP SP2. What I was trying to say is this: I don't expect the majority of people to build a local library of anything that has been done by anyone for the last 900 years. What I think is possible though is that at some point every jazz lover might have every piece of jazz that is worth listening, every top50 listener might have every song that ever made it to the top50, and every Metallica or Britney Spears fan might have everything that they ever released (note I am not saying this is good, all I'm saying is that it could happen). If we do reach this point, there are only a handful of titles that makes it to the top50, and the bandwidth required to incrementally download them becomes irrelevant. Again, this is not an argument about "is P2P right or wrong". In the US, we don't pay for local calls. Does it mean we all spend the entire day talking on the phone just because it's free? No it does not, and the same applies to P2P. Michel.

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Level 3 Contact
by James Baldwin 03 Sep '04

03 Sep '04

I'm looking for a contact in Level 3's Global Network Security Operations team. If anyone can ping me offline with information, I'd be grateful. --- James Baldwin

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RE: Senator Diane Feinstein Wants to know about the Benefits of P2P
by Michel Py 03 Sep '04

03 Sep '04

> Peter Galbavy wrote: > My personal reasons for any downloading of audio, specifically, > in it's unavailability through retail channels. I keep picking > up references to older stuff that has been dumped by the pop-bods > many years ago and cannot be bought for love nor money. I may be > breaking some law, but in these cases I do not feel a moral > problem. If I could find the artist, in many cases I would even > pay them the equiv. of the CD price directly. Perhaps the new > business models that will have to be rolled out, either by the > existing companies or new, will allow for the full back catalogues > to be availale to those of us willing to pay - and then my minor > infractions can stop. ACK, same here. > Back closer to topic, networks. P2P is a bandwidth spiral as we all > know - more broadband, more sharing. Will it ever slow down ? Not > in our career lifetimes I think. Whether legal or not, content is > going to be doing this merry-go-round for the forseeable future, > and the best we can hope for is to build and maintain the networks > while it happend. While I generally agree, there is a phenomenon that we might want to consider in some years: everyone having a local copy of every movie and music they want to see or hear. For music, this is already possible: some people have thousands and sometimes tens of thousands of files, and more and more get a jumpstart in building their library by massive dumps of buddies hard disks. For movies, terabyte disks are not far away and it's only a matter of time. In other words: as of today a large part of the bandwidth is allocated to building everyone's collection of files. This might gradually change to become bandwidth being used only for incremental updates as huge local file libraries become common place. Michel.

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Weekly Routing Table Report
by Routing Table Analysis 03 Sep '04

03 Sep '04

This is an automated weekly mailing describing the state of the Internet Routing Table as seen from APNIC's router in Japan. Daily listings are sent to bgp-stats(a)lists.apnic.net If you have any comments please contact Philip Smith <pfs(a)cisco.com>. Routing Table Report 04:00 +10GMT Sat 04 Sep, 2004 Analysis Summary ---------------- BGP routing table entries examined: 145774 Prefixes after maximum aggregation: 86810 Unique aggregates announced to Internet: 69608 Total ASes present in the Internet Routing Table: 17969 Origin-only ASes present in the Internet Routing Table: 15607 Origin ASes announcing only one prefix: 7264 Transit ASes present in the Internet Routing Table: 2362 Transit-only ASes present in the Internet Routing Table: 78 Average AS path length visible in the Internet Routing Table: 4.8 Max AS path length visible: 22 Prefixes from unregistered ASNs in the Routing Table: 33 Special use prefixes present in the Routing Table: 0 Prefixes being announced from unallocated address space: 16 Number of addresses announced to Internet: 1332457920 Equivalent to 79 /8s, 107 /16s and 177 /24s Percentage of available address space announced: 35.9 Percentage of allocated address space announced: 58.1 Percentage of available address space allocated: 61.9 Total number of prefixes smaller than registry allocations: 66629 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 27843 Total APNIC prefixes after maximum aggregation: 13973 Prefixes being announced from the APNIC address blocks: 26058 Unique aggregates announced from the APNIC address blocks: 14039 APNIC Region origin ASes present in the Internet Routing Table: 2128 APNIC Region origin ASes announcing only one prefix: 631 APNIC Region transit ASes present in the Internet Routing Table: 331 Average APNIC Region AS path length visible: 4.9 Max APNIC Region AS path length visible: 22 Number of APNIC addresses announced to Internet: 158646144 Equivalent to 9 /8s, 116 /16s and 191 /24s Percentage of available APNIC address space announced: 72.4 APNIC AS Blocks 4608-4864, 7467-7722, 9216-10239, 17408-18431 23552-24575 APNIC Address Blocks 58/7, 60/7, 202/7, 210/7, 218/7, 220/7 and 222/8 ARIN Region Analysis Summary ---------------------------- Prefixes being announced by ARIN Region ASes: 83493 Total ARIN prefixes after maximum aggregation: 50967 Prefixes being announced from the ARIN address blocks: 63820 Unique aggregates announced from the ARIN address blocks: 22570 ARIN Region origin ASes present in the Internet Routing Table: 9502 ARIN Region origin ASes announcing only one prefix: 3388 ARIN Region transit ASes present in the Internet Routing Table: 918 Average ARIN Region AS path length visible: 4.5 Max ARIN Region AS path length visible: 18 Number of ARIN addresses announced to Internet: 231154464 Equivalent to 13 /8s, 199 /16s and 35 /24s Percentage of available ARIN address space announced: 68.9 ARIN AS Blocks 1-1876, 1902-2042, 2044-2046, 2048-2106 2138-2584, 2615-2772, 2823-2829, 2880-3153 3354-4607, 4865-5119, 5632-6655, 6912-7466 7723-8191, 10240-12287, 13312-15359, 16384-17407 18432-20479, 21504-23551, 25600-26591, 26624-27647,29695-30719, 31744-33791 ARIN Address Blocks 24/8, 63/8, 64/6, 68/7, 70/7, 72/8, 198/7, 204/6, 208/7 and 216/8 RIPE Region Analysis Summary ---------------------------- Prefixes being announced by RIPE Region ASes: 26825 Total RIPE prefixes after maximum aggregation: 18919 Prefixes being announced from the RIPE address blocks: 23631 Unique aggregates announced from the RIPE address blocks: 15737 RIPE Region origin ASes present in the Internet Routing Table: 5791 RIPE Region origin ASes announcing only one prefix: 3109 RIPE Region transit ASes present in the Internet Routing Table: 992 Average RIPE Region AS path length visible: 5.4 Max RIPE Region AS path length visible: 21 Number of RIPE addresses announced to Internet: 170299456 Equivalent to 10 /8s, 38 /16s and 144 /24s Percentage of available RIPE address space announced: 59.7 RIPE AS Blocks 1877-1901, 2043, 2047, 2107-2136, 2585-2614 2773-2822, 2830-2879, 3154-3353, 5377-5631 6656-6911, 8192-9215, 12288-13311, 15360-16383 20480-21503, 24576-25599, 28672-29695 30720-31743, 33792-34815 RIPE Address Blocks 62/8, 80/5, 88/8, 188/8, 193/8, 194/7, 212/7 and 217/8 LACNIC Region Analysis Summary ------------------------------ Prefixes being announced by LACNIC Region ASes: 6332 Total LACNIC prefixes after maximum aggregation: 2262 Prefixes being announced from the LACNIC address blocks: 6118 Unique aggregates announced from the LACNIC address blocks: 3504 LACNIC Region origin ASes present in the Internet Routing Table: 387 LACNIC Region origin ASes announcing only one prefix: 115 LACNIC Region transit ASes present in the Internet Routing Table: 78 Average LACNIC Region AS path length visible: 5.2 Max LACNIC Region AS path length visible: 16 Number of LACNIC addresses announced to Internet: 15855104 Equivalent to 0 /8s, 241 /16s and 238 /24s Percentage of available LACNIC address space announced: 47.3 LACNIC AS Blocks 26592-26623, 27648-28671 LACNIC Address Blocks 200/7 Emerging AfriNIC Region Analysis Summary ---------------------------------------- Prefixes being announced by AfriNIC Region ASes: 1248 Total AfriNIC prefixes after maximum aggregation: 689 Prefixes being announced from the AfriNIC address blocks: 833 Unique aggregates announced from the AfriNIC address blocks: 662 AfriNIC Region origin ASes present in the Internet Routing Table: 92 AfriNIC Region origin ASes announcing only one prefix: 21 AfriNIC Region transit ASes present in the Internet Routing Table: 13 Average AfriNIC Region AS path length visible: 4.6 Max AfriNIC Region AS path length visible: 16 Number of AfriNIC addresses announced to Internet: 2060032 Equivalent to 0 /8s, 31 /16s and 111 /24s Percentage of available AfriNIC address space announced: 12.3 AfriNIC AS Blocks <none> AfriNIC Address Blocks 196/8 APNIC Region per AS prefix count summary ---------------------------------------- ASN No of nets /20 equiv MaxAgg Description 4134 833 4193 156 Data Communications Bureau 1221 811 1184 585 Telstra Pty Ltd 4766 564 2897 265 Korea Internet Exchange for " 9583 529 41 105 Satyam Infoway Ltd., 4755 364 133 50 Videsh Sanchar Nigam Ltd. Aut 9929 363 162 34 China Netcom Corp. 9443 355 70 81 Primus Telecommunications 2907 352 1840 326 SINET Japan 17676 348 5180 39 XTAGE CORPORATION 17557 317 22 155 Pakistan Telecom 703 312 342 241 UUNET 2764 283 273 231 connect.com.au pty ltd 7474 266 268 200 Optus Communications Pty Ltd 4802 233 28 143 Wantree Development 9942 232 73 127 COMindico Australia 9800 228 372 66 CHINA UNICOM 9498 221 49 49 BHARTI BT INTERNET LTD. 10036 202 18 183 C&M Communication Co. Ltd. 4837 201 2256 105 chinanet IDC center beijing n 17974 201 61 10 PT TELEKOMUNIKASI INDONESIA ARIN Region per AS prefix count summary --------------------------------------- ASN No of nets /20 equiv MaxAgg Description 7018 1412 6759 966 AT&T WorldNet Services 701 1275 8424 917 UUNET Technologies, Inc. 1239 920 2852 614 Sprint 2386 828 561 593 AT&T Data Communications Serv 4323 779 633 216 Time Warner Telecom 18566 743 208 6 Covad Communications 721 715 21020 295 DLA Systems Automation Center 6197 715 362 338 BellSouth Network Solutions, 209 621 3431 498 Qwest 20115 580 407 292 Charter Communications 3356 568 10981 438 Level 3 Communications, LLC 6347 540 296 118 SAVVIS Communications Corpora 852 511 1141 398 Telus Advanced Communications 7843 490 675 104 Adelphia Corp. 3561 466 2390 349 Cable & Wireless USA 6198 441 401 204 BellSouth Network Solutions, 7132 435 8029 377 SBC Internet Services 705 428 163 270 UUNET Technologies, Inc. 5668 389 87 18 Century Telephone 22773 389 960 19 Cox Communications, Inc. Atla RIPE Region per AS prefix count summary --------------------------------------- ASN No of nets /20 equiv MaxAgg Description 702 649 2032 539 UUNET - Commercial IP service 3320 301 2470 238 Deutsche Telekom AG 3301 281 1098 271 TeliaNet Sweden 8220 275 445 262 COLT Internet - International 680 251 2025 239 DFN-IP service G-WiN 3246 217 475 214 Song Networks 13083 217 51 8 Mannesmann Datenverarbeitung 1257 213 747 182 SWIPnet Swedish IP Network 8708 203 113 182 Romania Data Systems S.A. 5515 199 842 145 Sonera Solution Autonomous Sy 3215 182 876 76 France Telecom Transpac 786 177 1794 177 The JANET IP Service 719 157 288 102 LANLINK autonomous system 5400 155 209 126 BT Ignite European Backbone 6746 154 29 131 Dynamic Network Technologies, 25186 153 154 109 France Telecom Transpac's Tra 3303 146 609 129 Swisscom Ltd 3269 145 1195 66 TELECOM ITALIA 8866 136 16 17 Bulgarian Telecommunication C 12302 127 18 33 MobiFon S.A. LACNIC Region per AS prefix count summary ----------------------------------------- ASN No of nets /20 equiv MaxAgg Description 11172 357 100 54 Servicios Alestra S.A de C.V 6140 356 137 63 ImpSat 8151 286 407 132 UniNet S.A. de C.V. 16814 212 13 7 NSS, S.A. 6147 191 86 19 Telefonica Del Peru 11664 158 11 21 Keytech SA 6505 136 90 93 Global One Communicaoes Ltda 6503 134 187 90 AVANTEL, S.A. 7303 121 55 19 Telecom Argentina Stet-France 11992 90 9 31 Integrated Systems 14420 86 6 34 ANDINATEL S.A. 6535 84 5 18 Chilesat Servicios Empresari 10481 81 32 7 Prima S.A. 11556 80 40 2 Cable-Wireless Panama 11311 78 7 19 Sinectis S.A. 5639 77 8 8 Telecommunications Services o 15311 76 21 36 Telefonica Empresas 4270 70 18 9 Red de Interconexion Universi 14117 69 5 4 Telefonica del Sur S.A. 10292 67 6 29 TELECOMMUNICATIONS OF JAMAICA AfriNIC Region per AS prefix count summary ------------------------------------------ ASN No of nets /20 equiv MaxAgg Description 3741 252 632 219 The Internet Solution 5536 114 16 4 Internet Egypt Network 2018 94 297 92 Tertiary Education Network 2905 92 276 81 The Internetworking Company o 20928 59 16 1 Noor Advanced Technologies AS 14988 49 16 1 Botswana Telecommunications C 24835 36 34 7 RAYA Telecom - Egypt 9129 31 3 4 UUNET Kenya 6713 27 42 10 Itissalat Al-MAGHRIB 5713 26 125 24 Telkom SA Ltd 8524 25 1 4 AUCEGYPT Autonomous System 16637 24 10 19 Johnnic e-Ventures 10798 18 1 12 Standard Bank of South Africa 12258 18 3 12 Vodacom Internet Company 12455 17 4 2 Jambonet Autonomous system 8346 15 7 14 SONATEL-AS Autonomous System 15706 15 4 2 Sudatel Internet Exchange Aut 21491 14 1 3 UTL On-line is RF broadband I 15808 13 1 2 Communication Solutions Ltd i 17148 13 1 7 First National Bank Global Per AS Maximum Aggr summary ---------------------------------- ASN No of nets Net Savings Description 18566 743 737 Covad Communications 4134 833 677 Data Communications Bureau 4323 779 563 Time Warner Telecom 9583 529 424 Satyam Infoway Ltd., 6347 540 422 SAVVIS Communications Corpora 721 715 420 DLA Systems Automation Center 7843 490 386 Adelphia Corp. 6197 715 377 BellSouth Network Solutions, 5668 389 371 Century Telephone 22773 389 370 Cox Communications, Inc. Atla 701 1275 358 UUNET Technologies, Inc. 6467 388 358 E.Spire Communications, Inc. 27364 364 345 Armstrong Cable Services 22909 365 330 Comcast Cable Corporation 9929 363 329 China Netcom Corp. 4755 364 314 Videsh Sanchar Nigam Ltd. Aut 17676 348 309 XTAGE CORPORATION 1239 920 306 Sprint 11172 357 303 Servicios Alestra S.A de C.V 4766 564 299 Korea Internet Exchange for " List of Unregistered ASNs (Global) ---------------------------------- Bad AS Designation Network Transit AS Description 65217 PRIVATE 192.102.236.0/24 217 University of Minnes 1877 UNALLOCATED 192.108.199.0/24 1876 Southern Methodist U 64572 PRIVATE 219.146.96.0/21 17633 ASN for Shandong Pro 64572 PRIVATE 219.146.104.0/21 17633 ASN for Shandong Pro 64573 PRIVATE 219.146.112.0/21 17633 ASN for Shandong Pro 64573 PRIVATE 219.146.120.0/21 17633 ASN for Shandong Pro 64576 PRIVATE 219.146.128.0/21 17633 ASN for Shandong Pro 64576 PRIVATE 219.146.136.0/21 17633 ASN for Shandong Pro 64582 PRIVATE 219.146.144.0/22 17633 ASN for Shandong Pro 64582 PRIVATE 219.146.148.0/22 17633 ASN for Shandong Pro 64584 PRIVATE 219.146.176.0/22 17633 ASN for Shandong Pro 64584 PRIVATE 219.146.180.0/22 17633 ASN for Shandong Pro 64575 PRIVATE 219.146.192.0/22 17633 ASN for Shandong Pro 64575 PRIVATE 219.146.196.0/22 17633 ASN for Shandong Pro 64580 PRIVATE 219.146.208.0/21 17633 ASN for Shandong Pro 64581 PRIVATE 219.146.216.0/21 17633 ASN for Shandong Pro 64585 PRIVATE 219.146.224.0/21 17633 ASN for Shandong Pro 64582 PRIVATE 219.147.0.0/24 17633 ASN for Shandong Pro 64572 PRIVATE 222.173.128.0/20 17633 ASN for Shandong Pro 64572 PRIVATE 222.173.144.0/20 17633 ASN for Shandong Pro 64573 PRIVATE 222.173.160.0/20 17633 ASN for Shandong Pro 64573 PRIVATE 222.173.176.0/20 17633 ASN for Shandong Pro 64576 PRIVATE 222.173.192.0/20 17633 ASN for Shandong Pro 64576 PRIVATE 222.173.208.0/20 17633 ASN for Shandong Pro 64582 PRIVATE 222.173.224.0/20 17633 ASN for Shandong Pro 64582 PRIVATE 222.173.240.0/20 17633 ASN for Shandong Pro 64584 PRIVATE 222.174.96.0/20 17633 ASN for Shandong Pro 64584 PRIVATE 222.174.112.0/20 17633 ASN for Shandong Pro 64575 PRIVATE 222.174.160.0/20 17633 ASN for Shandong Pro 64575 PRIVATE 222.174.176.0/20 17633 ASN for Shandong Pro 64580 PRIVATE 222.174.224.0/19 17633 ASN for Shandong Pro 64581 PRIVATE 222.175.0.0/19 17633 ASN for Shandong Pro 64585 PRIVATE 222.175.32.0/19 17633 ASN for Shandong Pro Advertised Unallocated Addresses -------------------------------- Network Origin AS Description 132.0.0.0/10 721 DLA Systems Automation Center 137.0.0.0/13 721 DLA Systems Automation Center 158.0.0.0/13 721 DLA Systems Automation Center 192.43.230.0/24 4738 South Australian Academic Res 192.44.0.0/19 702 UUNET - Commercial IP service 192.70.164.0/24 25689 National Research Council of 192.83.16.0/20 5515 Sonera Solution Autonomous Sy 192.83.32.0/19 5515 Sonera Solution Autonomous Sy 192.83.96.0/22 5515 Sonera Solution Autonomous Sy 192.83.100.0/24 5515 Sonera Solution Autonomous Sy 192.84.205.0/24 719 LANLINK autonomous system 192.119.135.0/24 270 NASA 192.135.50.0/24 7018 AT&T WorldNet Services 192.136.79.0/24 719 LANLINK autonomous system 192.172.0.0/19 721 DLA Systems Automation Center 192.172.11.0/24 721 DLA Systems Automation Center Number of prefixes announced per prefix length (Global) ------------------------------------------------------- /1:0 /2:0 /3:0 /4:0 /5:0 /6:0 /7:0 /8:19 /9:3 /10:6 /11:14 /12:63 /13:134 /14:304 /15:541 /16:8029 /17:2201 /18:3813 /19:9748 /20:10249 /21:7702 /22:10621 /23:12237 /24:79352 /25:240 /26:189 /27:100 /28:52 /29:27 /30:87 /31:0 /32:43 Advertised prefixes smaller than registry allocations ----------------------------------------------------- ASN No of nets Total ann. Description 18566 727 743 Covad Communications 2386 591 828 AT&T Data Communications Serv 6197 567 715 BellSouth Network Solutions, 7018 556 1412 AT&T WorldNet Services 702 397 649 UUNET - Commercial IP service 6347 389 540 SAVVIS Communications Corpora 9583 369 529 Satyam Infoway Ltd., 4766 368 564 Korea Internet Exchange for " 701 358 1275 UUNET Technologies, Inc. 1239 353 920 Sprint 27364 348 364 Armstrong Cable Services 5668 340 389 Century Telephone 6198 322 441 BellSouth Network Solutions, 20115 302 580 Charter Communications 9929 290 363 China Netcom Corp. 6467 285 388 E.Spire Communications, Inc. 6517 265 292 Yipes Communications, Inc. 13609 261 304 Choice One Communications Inc 3320 247 301 Deutsche Telekom AG 25844 245 245 Skadden, Arps, Slate, Meagher Number of /24s announced per /8 block (Global) ---------------------------------------------- 4:4 8:2 12:1413 13:1 15:5 16:2 17:3 20:9 24:703 32:78 33:3 38:79 40:54 44:4 52:3 55:1 56:3 57:17 60:6 61:468 62:500 63:1829 64:2293 65:2064 66:2447 67:367 68:540 69:696 70:34 80:517 81:370 82:231 83:140 84:26 128:104 129:171 130:87 131:190 132:26 134:187 135:17 136:187 137:50 138:168 139:38 140:158 141:107 142:120 143:67 144:155 145:41 146:292 147:92 148:422 149:107 150:87 151:70 152:169 153:68 154:2 155:129 156:58 157:79 158:141 159:160 160:56 161:71 162:389 163:79 164:205 165:160 166:111 167:221 168:286 169:109 170:271 171:9 192:5589 193:2881 194:2114 195:1470 196:590 198:3666 199:3250 200:3703 201:15 202:4771 203:5634 204:3221 205:2076 206:2318 207:2528 208:2133 209:3037 210:1470 211:586 212:1014 213:1195 214:130 215:31 216:3709 217:997 218:186 219:84 220:245 221:37 222:44 End of report

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The Cidr Report
by cidr-report＠potaroo.net 03 Sep '04

03 Sep '04

This report has been generated at Fri Sep 3 21:42:39 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 27-08-04 141076 96863 28-08-04 141171 97254 29-08-04 141491 97240 30-08-04 141597 98008 31-08-04 142532 98024 01-09-04 142544 98057 02-09-04 142531 98010 03-09-04 142564 98095 AS Summary 17878 Number of ASes in routing system 7254 Number of ASes announcing only one prefix 1392 Largest number of prefixes announced by an AS AS7018 : ATTW AT&T WorldNet Services 86681088 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'). --- 03Sep04 --- ASnum NetsNow NetsAggr NetGain % Gain Description Table 142686 98127 44559 31.2% All ASes AS18566 743 7 736 99.1% CVAD Covad Communications AS4134 782 172 610 78.0% CHINANET-BACKBONE No.31,Jin-rong Street AS4323 778 217 561 72.1% TWTC Time Warner Telecom AS7018 1392 950 442 31.8% ATTW AT&T WorldNet Services AS6347 539 118 421 78.1% SAVV SAVVIS Communications Corporation AS7843 489 108 381 77.9% ADELPH-13 Adelphia Corp. AS22773 389 21 368 94.6% CXAB Cox Communications Inc. Atlanta AS6467 388 31 357 92.0% ACSI e.spire Communications, Inc. AS9583 528 174 354 67.0% SATYAMNET-AS Satyam Infoway Ltd., AS701 1253 904 349 27.9% UU UUNET Technologies, Inc. AS27364 364 36 328 90.1% ARMC Armstrong Cable Services AS6197 714 393 321 45.0% BNS-14 BellSouth Network Solutions, Inc AS9929 353 34 319 90.4% CNCNET-CN China Netcom Corp. AS22909 362 43 319 88.1% CMCS Comcast Cable Communications, Inc. AS1239 931 623 308 33.1% SPRN Sprint AS17676 346 43 303 87.6% JPNIC-JP-ASN-BLOCK Japan Network Information Center AS11172 353 52 301 85.3% Alestra AS6478 355 70 285 80.3% ATTW AT&T WorldNet Services AS4355 380 99 281 73.9% ERSD EARTHLINK, INC AS4766 543 266 277 51.0% KIXS-AS-KR Korea Telecom AS9443 359 109 250 69.6% INTERNETPRIMUS-AS-AP Primus Telecommunications AS14654 255 10 245 96.1% WAYPOR-3 Wayport AS6140 372 130 242 65.1% IMPSA ImpSat AS25844 244 16 228 93.4% SASMFL-2 Skadden, Arps, Slate, Meagher & Flom LLP AS2386 826 600 226 27.4% ADCS-1 AT&T Data Communications Services AS6198 441 217 224 50.8% BNS-14 BellSouth Network Solutions, Inc AS6327 226 29 197 87.2% SHAWC-2 Shaw Communications Inc. AS22291 260 68 192 73.8% CC04 Charter Communications AS5668 389 199 190 48.8% CIH-12 CenturyTel Internet Holdings, Inc. AS721 716 532 184 25.7% DNIC DoD Network Information Center Total 16070 6271 9799 61.0% 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 66.54.112.0/24 AS32899 66.54.113.0/24 AS32899 66.54.114.0/24 AS32899 66.54.115.0/24 AS32899 66.114.0.0/19 AS16526 BIRCHT Birch Telecom, Inc. 69.26.32.0/19 AS17307 VIRTEL-15 Virtela Communications 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. 196.2.95.0/24 AS8668 TELONE-AS TelOne Zimbabwe P/L 198.23.26.0/24 AS4390 BELLAT-7 Bell Atlantic, Inc. 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 198.97.240.0/20 AS721 DNIC DoD Network Information Center 198.97.247.0/24 AS3475 DEPART-52 Department of the Navy 198.101.4.0/22 AS721 DNIC DoD Network Information Center 198.136.32.0/20 AS19329 MCBCC Martin County Board of County Commissioners 198.144.32.0/19 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 209.172.0.0/18 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 209.213.50.0/24 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 216.37.110.0/23 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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Re: OT- need a new GSM provider
by Fred Heutte 03 Sep '04

03 Sep '04

I like T-Mobile here in Portland, Oregon. Got a Sidekick/Hiptop. It does web, email, phone, notes, AIM (who cares), calendar, and the new one out later this month will have a built-in camera. The little keypad is nicer than the Blackberry. It was an extra $10 for the Terminal app, which runs ssh . . . need I say more . . . so now wireless life is good. Back to lurker mode . . . phred

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Senator Diane Feinstein Wants to know about the Benefits of P2P
by Henry Linneweh 02 Sep '04

02 Sep '04

So I would like some professional expert opinion to give her on this issue since it will effect the copyright inducement bill. Real benefits for production and professional usage of this technology. -Henry

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OT: We have a winner!
by Gary King 02 Sep '04

02 Sep '04

Here are the results of my poll, enjoy. John Kerry Kerry: 25 George W. Bush: 14 Undecided: 4 Michael Badnarik: 3 Randy Bush: 2 Harold Stassen: 1 Michael Peroutka: 1 Bill the Cat: 1 Bugs Bunny: 1

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