Home page logo
/

nanog logo nanog mailing list archives

The Cidr Report
From: cidr-report () potaroo net
Date: Fri, 14 Feb 2003 22:00:00 +1100 (EST)


This report has been generated at Fri Feb 14 00:46:03 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
        07-02-03    118526       85124
        08-02-03    118568       85173
        09-02-03    118579       85149
        10-02-03    118627       85137
        11-02-03    118637       85198
        12-02-03    118760       85310
        13-02-03    118989       85108
        14-02-03    119071       85326


AS Summary
         14555  Number of ASes in routing system
          5721  Number of ASes announcing only one prefix
          1571  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').

 --- 14Feb03 ---
ASnum    NetsNow NetsAggr  NetGain   % Gain   Description

Table     119071    85433    33638    28.3%   All ASes

AS3908      1056      565      491    46.5%   SUPERNETASBLK SuperNet, Inc.
AS18566      474        7      467    98.5%   COVAD Covad Communications
AS4151       523      102      421    80.5%   USDA-1 USDA
AS701       1571     1161      410    26.1%   ALTERNET-AS UUNET
                                               Technologies, Inc.
AS7018      1425     1033      392    27.5%   ATT-INTERNET4 AT&T WorldNet
                                               Services
AS4323       528      169      359    68.0%   TW-COMM Time Warner
                                               Communications, Inc.
AS7843       569      240      329    57.8%   ADELPHIA-AS Adelphia Corp.
AS6197       476      157      319    67.0%   BATI-ATL BellSouth Network
                                               Solutions, Inc
AS1221      1130      824      306    27.1%   ASN-TELSTRA Telstra Pty Ltd
AS7046       566      274      292    51.6%   UUNET-CUSTOMER UUNET
                                               Technologies, Inc.
AS4355       405      119      286    70.6%   ERMS-EARTHLNK EARTHLINK, INC
AS1239       958      674      284    29.6%   SPRINTLINK Sprint
AS6347       368       85      283    76.9%   DIAMOND SAVVIS Communications
                                               Corporation
AS22927      295       14      281    95.3%   AR-TEAR2-LACNIC TELEFONICA DE
                                               ARGENTINA
AS705        446      196      250    56.1%   ASN-ALTERNET UUNET
                                               Technologies, Inc.
AS4814       261       15      246    94.3%   CHINANET-BEIJING-AP China
                                               Telecom (Group)
AS1          663      435      228    34.4%   GNTY-1 Genuity
AS6198       434      220      214    49.3%   BATI-MIA BellSouth Network
                                               Solutions, Inc
AS22291      242       32      210    86.8%   CHARTER-LA Charter
                                               Communications
AS17676      224       24      200    89.3%   GIGAINFRA XTAGE CORPORATION
AS690        498      308      190    38.2%   MERIT-AS-27 Merit Network Inc.
AS4134       306      119      187    61.1%   ERX-CHINALINK Data
                                               Communications Bureau
AS209        523      337      186    35.6%   ASN-QWEST Qwest
AS2386       439      259      180    41.0%   INS-AS AT&T Data
                                               Communications Services
AS2048       260       87      173    66.5%   LANET-1 State of Louisiana
AS852        606      446      160    26.4%   ASN852 Telus Advanced
                                               Communications
AS17557      339      188      151    44.5%   PKTELECOM-AS-AP Pakistan
                                               Telecom
AS22773      177       27      150    84.7%   CCINET-2 Cox Communications
                                               Inc. Atlanta
AS6140       285      136      149    52.3%   IMPSAT-USA ImpSat
AS6327       186       40      146    78.5%   SHAWFIBER Shaw Fiberlink
                                               Limited

Total      16233     8293     7940    48.9%   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


  By Date           By Thread  

Current thread:
[ Nmap | Sec Tools | Mailing Lists | Site News | About/Contact | Advertising | Privacy ]