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The Cidr Report

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  • Date: Fri, 11 Apr 2003 22:00:01 +1000 (EST)
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This report has been generated at Fri Apr 11 21:46:50 2003 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
        04-04-03    121205       86530
        05-04-03    121077       86591
        06-04-03    120820       86365
        07-04-03    120917       86463
        08-04-03    121020       86473
        09-04-03    121144       86561
        10-04-03    120942       86620
        11-04-03    121008       86701


AS Summary
         14913  Number of ASes in routing system
          5884  Number of ASes announcing only one prefix
          1564  Largest number of prefixes announced by an AS
                AS701  : ALTERNET-AS UUNET Technologies, Inc.
      73154560  Largest address span announced by an AS (/32s)
                AS568  : SUMNET-AS DISO-UNRRA


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').

 --- 11Apr03 ---
ASnum    NetsNow NetsAggr  NetGain   % Gain   Description

Table     121213    86696    34517    28.5%   All ASes

AS4151       691       75      616    89.1%   USDA-1 USDA
AS7843       642      188      454    70.7%   ADELPHIA-AS Adelphia Corp.
AS701       1564     1111      453    29.0%   ALTERNET-AS UUNET
                                               Technologies, Inc.
AS4323       567      167      400    70.5%   TW-COMM Time Warner
                                               Communications, Inc.
AS7132       802      414      388    48.4%   SBIS-AS SBC Internet Services
                                               - Southwest
AS3908       911      529      382    41.9%   SUPERNETASBLK SuperNet, Inc.
AS7018      1351      976      375    27.8%   ATT-INTERNET4 AT&T WorldNet
                                               Services
AS1221      1107      797      310    28.0%   ASN-TELSTRA Telstra Pty Ltd
AS1239       965      682      283    29.3%   SPRINTLINK Sprint
AS6198       457      181      276    60.4%   BATI-MIA BellSouth Network
                                               Solutions, Inc
AS6197       476      202      274    57.6%   BATI-ATL BellSouth Network
                                               Solutions, Inc
AS705        487      215      272    55.9%   ALTERNET-AS UUNET
                                               Technologies, Inc.
AS22927      286       14      272    95.1%   AR-TEAR2-LACNIC TELEFONICA DE
                                               ARGENTINA
AS4355       373      115      258    69.2%   ERMS-EARTHLNK EARTHLINK, INC
AS4814       270       16      254    94.1%   CHINANET-BEIJING-AP China
                                               Telecom (Group)
AS17557      378      144      234    61.9%   PKTELECOM-AS-AP Pakistan
                                               Telecom
AS209        529      303      226    42.7%   ASN-QWEST Qwest
AS2386       507      282      225    44.4%   INS-AS AT&T Data
                                               Communications Services
AS17676      237       29      208    87.8%   GIGAINFRA XTAGE CORPORATION
AS27364      266       59      207    77.8%   ACS-INTERNET Armstrong Cable
                                               Services
AS11305      341      143      198    58.1%   INTERLAND-NET1 Interland
                                               Incorporated
AS22773      203        8      195    96.1%   CCINET-2 Cox Communications
                                               Inc. Atlanta
AS690        495      316      179    36.2%   MERIT-AS-27 Merit Network Inc.
AS3561       513      335      178    34.7%   CWUSA Cable & Wireless USA
AS6347       367      190      177    48.2%   DIAMOND SAVVIS Communications
                                               Corporation
AS2048       254       84      170    66.9%   LANET-1 State of Louisiana
AS22291      241       79      162    67.2%   CHARTER-LA Charter
                                               Communications
AS6327       190       34      156    82.1%   SHAWFIBER Shaw Fiberlink
                                               Limited
AS7303       242       93      149    61.6%   AR-TAST-LACNIC Telecom
                                               Argentina Stet-France Telecom
                                               S.A.
AS3215       321      175      146    45.5%   AS3215  France Telecom
                                               Transpac

Total      16033     7956     8077    50.4%   Top 30 total



Please see http://www.cidr-report.org for the full report

------------------------------------
Copies of this report are mailed to:
  nanog@localhost
  eof-list@localhost
  apops@localhost
  routing-wg@localhost
  afnog@localhost




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