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The Cidr Report

  • From: cidr-report
  • Date: Fri Dec 20 06:04:16 2002

This report has been generated at Fri Dec 20 21:48:05 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
        13-12-02    116860       84869
        14-12-02    117040       84854
        15-12-02    117512       84906
        16-12-02    117508       84871
        17-12-02    117485       84596
        18-12-02    116531       84555
        19-12-02    116615       84511
        20-12-02    116819       84486


AS Summary
         14204  Number of ASes in routing system
          5600  Number of ASes announcing only one prefix
          1622  Largest number of prefixes announced by an AS
                AS701  : ALTERNET-AS UUNET Technologies, Inc.
      73048064  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').

 --- 20Dec02 ---
ASnum    NetsNow NetsAggr  NetGain   % Gain   Description

Table     116934    84523    32411    27.7%   All ASes

AS3908      1167      685      482    41.3%   SUPERNETASBLK SuperNet, Inc.
AS701       1622     1205      417    25.7%   ALTERNET-AS UUNET
                                               Technologies, Inc.
AS7018      1425     1029      396    27.8%   ATT-INTERNET4 AT&T WorldNet
                                               Services
AS18566      393        5      388    98.7%   COVAD Covad Communications
AS7843       624      279      345    55.3%   ADELPHIA-AS Adelphia Corp.
AS4323       530      187      343    64.7%   TW-COMM Time Warner
                                               Communications, Inc.
AS1221      1152      835      317    27.5%   ASN-TELSTRA Telstra Pty Ltd
AS6197       453      149      304    67.1%   BATI-ATL BellSouth Network
                                               Solutions, Inc
AS6347       359       85      274    76.3%   DIAMOND SAVVIS Communications
                                               Corporation
AS1239       948      676      272    28.7%   SPRINTLINK Sprint
AS4355       403      132      271    67.2%   ERMS-EARTHLNK EARTHLINK, INC
AS22927      289       22      267    92.4%   AR-TEAR2-LACNIC TELEFONICA DE
                                               ARGENTINA
AS7046       579      313      266    45.9%   UUNET-CUSTOMER UUNET
                                               Technologies, Inc.
AS705        431      192      239    55.5%   ASN-ALTERNET UUNET
                                               Technologies, Inc.
AS4814       249       15      234    94.0%   CHINANET-BEIJING-AP China
                                               Telecom (Group)
AS1          664      441      223    33.6%   GNTY-1 Genuity
AS6198       421      201      220    52.3%   BATI-MIA BellSouth Network
                                               Solutions, Inc
AS17676      230       29      201    87.4%   GIGAINFRA XTAGE CORPORATION
AS22291      226       29      197    87.2%   CHARTER-LA Charter
                                               Communications
AS690        513      319      194    37.8%   MERIT-AS-27 Merit Network Inc.
AS6140       314      121      193    61.5%   IMPSAT-USA ImpSat
AS4134       293      106      187    63.8%   ERX-CHINALINK Data
                                               Communications Bureau
AS4151       323      141      182    56.3%   USDA-1 USDA
AS209        519      338      181    34.9%   ASN-QWEST Qwest
AS852        622      442      180    28.9%   ASN852 Telus Advanced
                                               Communications
AS2048       262       88      174    66.4%   LANET-1 State of Louisiana
AS6327       184       33      151    82.1%   SHAWFIBER Shaw Fiberlink
                                               Limited
AS2386       370      225      145    39.2%   INS-AS AT&T Data
                                               Communications Services
AS17557      315      173      142    45.1%   PKTELECOM-AS-AP Pakistan
                                               Telecom
AS2686       225       87      138    61.3%   AS2686 AT&T Global Network
                                               Services - EMEA

Total      16105     8582     7523    46.7%   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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