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The Cidr Report

  • From: cidr-report
  • Date: Fri Oct 25 08:04:58 2002

This report has been generated at Fri Oct 25 21:44:47 2002 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
        18-10-02    114704       82884
        19-10-02    115116       82872
        20-10-02    114956       82781
        21-10-02    114861       82208
        22-10-02    115010       82457
        23-10-02    115086       82530
        24-10-02    115044       82513
        25-10-02    114752       82519


AS Summary
         13926  Number of ASes in routing system
          5448  Number of ASes announcing only one prefix
          1750  Largest number of prefixes announced by an AS
                AS701  : ALTERNET-AS UUNET Technologies, Inc.
      73146368  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').

 --- 25Oct02 ---
ASnum    NetsNow NetsAggr  NetGain   % Gain   Description

Table     115124    82508    32616    28.3%   All ASes

AS3908      1062      559      503    47.4%   SUPERNETASBLK SuperNet, Inc.
AS701       1750     1260      490    28.0%   ALTERNET-AS UUNET
                                               Technologies, Inc.
AS7843       759      337      422    55.6%   ADELPHIA-AS Adelphia Corp.
AS2828       472      102      370    78.4%   XO-AS15 XO Communications
AS7018      1361     1003      358    26.3%   ATT-INTERNET4 AT&T WorldNet
                                               Services
AS7132       415       70      345    83.1%   SBIS-AS Southwestern Bell
                                               Internet Services
AS6198       419       80      339    80.9%   BATI-MIA BellSouth Network
                                               Solutions, Inc
AS4323       519      181      338    65.1%   TW-COMM Time Warner
                                               Communications, Inc.
AS1221      1196      874      322    26.9%   ASN-TELSTRA Telstra Pty Ltd
AS18566      326        4      322    98.8%   COVAD Covad Communications
AS7046       587      299      288    49.1%   UUNET-CUSTOMER UUNET
                                               Technologies, Inc.
AS852        737      458      279    37.9%   ASN852 Telus Advanced
                                               Communications
AS6347       350       75      275    78.6%   DIAMOND SAVVIS Communications
                                               Corporation
AS4355       385      125      260    67.5%   ERMS-EARTHLNK EARTHLINK, INC
AS705        442      203      239    54.1%   ASN-ALTERNET UUNET
                                               Technologies, Inc.
AS4151       292       55      237    81.2%   USDA-1 USDA
AS209        572      338      234    40.9%   ASN-QWEST Qwest
AS1239       885      663      222    25.1%   SPRINTLINK Sprint
AS1          651      434      217    33.3%   GNTY-1 Genuity
AS4814       232       15      217    93.5%   CHINANET-BEIJING-AP China
                                               Telecom (Group)Beijing
                                               Telecom CompanyBeijing China
AS17557      314      118      196    62.4%   PKTELECOM-AS-AP APNIC ASN
                                               block
AS22927      215       20      195    90.7%   AR-TEAR2-LACNIC TELEFONICA DE
                                               ARGENTINA
AS690        517      324      193    37.3%   MERIT-AS-27 Merit Network Inc.
AS6140       258       65      193    74.8%   IMPSAT-USA ImpSat USA, Inc.
AS6595       249       56      193    77.5%   DODDSEUR DoD Education
                                               Activity Network Assistance
                                               Center
AS17676      224       34      190    84.8%   GIGAINFRA APNIC ASN block
AS4134       296      113      183    61.8%   ERX-CHINALINK Data
                                               Communications Bureau
AS2048       265       88      177    66.8%   LANET-1 State of Louisiana
AS174        290      133      157    54.1%   PSINET PSINet Inc.
AS2548       401      244      157    39.2%   ICIX-MD-AS Business Internet,
                                               Inc.

Total      16441     8330     8111    49.3%   Top 30 total



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

------------------------------------
Copies of this report are mailed to:
  nanog@merit.edu
  eof-list@ripe.net
  apops@lists.apnic.net
  routing-wg@ripe.net
  afnog@afnog.org




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