North American Network Operators Group

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The Cidr Report

  • From: cidr-report
  • Date: Fri Nov 29 06:05:12 2002

This report has been generated at Fri Nov 29 21:45:21 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
        22-11-02    116795       84759
        23-11-02    117137       84733
        24-11-02    117342       84973
        25-11-02    117875       84933
        26-11-02    117560       85077
        27-11-02    117565       85161
        28-11-02    117576       84918
        29-11-02    117628       85008


AS Summary
         14099  Number of ASes in routing system
          5541  Number of ASes announcing only one prefix
          2403  Largest number of prefixes announced by an AS
                AS3908 : SUPERNETASBLK SuperNet, Inc.
      72949760  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').

 --- 29Nov02 ---
ASnum    NetsNow NetsAggr  NetGain   % Gain   Description

Table     117621    84999    32622    27.7%   All ASes

AS3908      2403     1314     1089    45.3%   SUPERNETASBLK SuperNet, Inc.
AS701       1714     1237      477    27.8%   ALTERNET-AS UUNET
                                               Technologies, Inc.
AS18566      377        5      372    98.7%   COVAD Covad Communications
AS7018      1406     1038      368    26.2%   ATT-INTERNET4 AT&T WorldNet
                                               Services
AS7843       664      300      364    54.8%   ADELPHIA-AS Adelphia Corp.
AS4323       526      184      342    65.0%   TW-COMM Time Warner
                                               Communications, Inc.
AS6197       460      123      337    73.3%   BATI-ATL BellSouth Network
                                               Solutions, Inc
AS1221      1176      853      323    27.5%   ASN-TELSTRA Telstra Pty Ltd
AS7046       585      296      289    49.4%   UUNET-CUSTOMER UUNET
                                               Technologies, Inc.
AS6347       358       81      277    77.4%   DIAMOND SAVVIS Communications
                                               Corporation
AS4355       403      136      267    66.3%   ERMS-EARTHLNK EARTHLINK, INC
AS22927      275       20      255    92.7%   AR-TEAR2-LACNIC TELEFONICA DE
                                               ARGENTINA
AS1239       911      658      253    27.8%   SPRINTLINK Sprint
AS6198       420      167      253    60.2%   BATI-MIA BellSouth Network
                                               Solutions, Inc
AS705        439      206      233    53.1%   ASN-ALTERNET UUNET
                                               Technologies, Inc.
AS4814       248       15      233    94.0%   CHINANET-BEIJING-AP China
                                               Telecom (Group)
AS1          663      440      223    33.6%   GNTY-1 Genuity
AS4151       352      149      203    57.7%   USDA-1 USDA
AS852        669      468      201    30.0%   ASN852 Telus Advanced
                                               Communications
AS17557      314      123      191    60.8%   PKTELECOM-AS-AP Pakistan
                                               Telecom
AS6595       243       58      185    76.1%   DODDSEUR DoD Education
                                               Activity Network Assistance
                                               Center
AS4134       299      117      182    60.9%   ERX-CHINALINK Data
                                               Communications Bureau
AS209        519      338      181    34.9%   ASN-QWEST Qwest
AS17676      230       50      180    78.3%   GIGAINFRA XTAGE CORPORATION
AS690        506      334      172    34.0%   MERIT-AS-27 Merit Network Inc.
AS2048       260       88      172    66.2%   LANET-1 State of Louisiana
AS6140       268      103      165    61.6%   IMPSAT-USA ImpSat
AS6327       182       33      149    81.9%   SHAWFIBER Shaw Fiberlink
                                               Limited
AS7132       215       67      148    68.8%   SBIS-AS Southwestern Bell
                                               Internet Services
AS2386       364      223      141    38.7%   INS-AS AT&T Data
                                               Communications Services

Total      17449     9224     8225    47.1%   Top 30 total



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

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