The Cidr Report

Fri Feb 13 20:25:47 UTC 1998

Please note this week's report is not accurate. This is due to an
internal move of my workstation and consequently losing access to the
router I use to get the information from. Normal service should resume in
the next couple of days.

Apologies for the inconvenience casued.

		--Tony

 Tony Bates <tbates at cisco.com> writes:
  * 
  * This is an auto-generated mail on Fri Feb 13 12:00:00 PST 1998
  * It is not checked before it leaves my workstation.  However, hopefully 
  * you will find this report interesting and will take the time to look 
  * through this to see if you can improve the amount of aggregation you 
  * perform.
  * 
  * The report is split into sections:
  * 
  *    0) General Status
  *    
  *       List the route table history for the last week, list any possibly
  *       bogus routes seen and give some status on ASes.
  * 
  *    1) Gains by aggregating at the origin AS level
  * 
  *       This lists the "Top 30" players who if they decided to aggregate
  *       their announced classful prefixes at the origin AS level could 
  *       make a significant difference in the reduction of the current 
  *       size of the Internet routing table. This calculation does not 
  *       take into account the inclusion of holes when forming an aggregate
  *       so it is possible even larger reduction should be possible.
  * 
  *    2) Weekly Delta
  * 
  *       A summary of the last weeks changes in terms of withdrawn and
  *       added routes. Please note that this is only a snapshot but does 
  *       give some indication of ASes participating in CIDR. Clearly,
  *       it is generally a good thing to see a large amont of withdrawls.
  * 
  *    3) Interesting aggregates
  * 
  *       Interesting here means not an aggregate made as a set of 
  *       classful routes.      
  * 
  * Thanks to xara.net for giving me access to their routing tables once a
  * day. 
  * 
  * Please send any comments about this report directly to me.
  * 
  * Check http://www.employees.org/~tbates/cidr-report.html for a daily
  * update of this report.
  * 
  * 
  * 
  * ---------------------------------------------------------------------------
  * ---
  * 
  *                         CIDR REPORT for 13Feb98
  * 
  * 
  * 0) General Status
  * 
  * Table History
  * -------------
  * 
  * Date	Prefixes
  * 290198	50396
  * 300198	50242
  * 310198	49848
  * 010298	49715
  * 020298	49739
  * 030298	49600
  * 040298	49877
  * 050298	49484
  * 
  * Check http://www.employees.org/~tbates/cidr.plot.html for a plot
  * of the table history.
  * 
  * 
  * Possible Bogus Routes
  * ---------------------
  * 
  * 
  * AS Summary
  * ----------
  * 
  * Number of ASes in routing system:                 2407
  * 
  * Number of ASes announcing only one prefix:         718 (0 cidr, 718 classfu
  * l)
  * 
  * Largest number of  cidr routes:                      0 announced by       
  * Largest number of classful routes:                1044 announced by  AS701
  * 
  * 
  * 
  * 1) Gains by aggregating at the origin AS level
  * 
  *  --- 13Feb98 ---
  * ASnum    NetsNow NetsCIDR  NetGain  % Gain   Description
  * 
  * AS2493       691      368      323   46.7%   iSTAR Internet, Inc.
  * AS6235       495      252      243   49.1%   Intermedia Communications, Inc
  * .
  * AS4293       430      210      220   51.2%   IMCI
  * AS174        874      673      201   23.0%   Performance Systems Internatio
  * nal
  * AS816        635      444      191   30.1%   UUNET Canada (ASN-UUNETCA-AS4)
  * AS3602       455      304      151   33.2%   Sprint Canada Inc.
  * AS3749       202       61      141   69.8%   TECNET
  * AS701       1044      931      113   10.8%   Alternet
  * AS3336       109       19       90   82.6%   Internet Services, Kolumbus pr
  * oje
  * AS3751       125       48       77   61.6%   SNET-AS
  * AS5668       107       40       67   62.6%   Century Telephone Inc.
  * AS3804       204      142       62   30.4%   WORLDLINX
  * AS2048       154       92       62   40.3%   LaNet
  * AS1239       596      534       62   10.4%   SprintLink Backbone
  * AS3221        92       33       59   64.1%   EENet Autonomous System
  * AS1          840      782       58    6.9%   BBNPLANET
  * AS271        110       55       55   50.0%   BCNET-AS
  * AS719        519      468       51    9.8%   LANLINK autonomous system
  * AS549        214      163       51   23.8%   ONET-AS
  * AS3464       115       64       51   44.3%   Alabama Research and Education
  *  Ne
  * AS1221       263      214       49   18.6%   AARNET-AS
  * AS72          84       36       48   57.1%   Schlumberger Information Netwo
  * rk
  * AS4763       128       80       48   37.5%   Telstra New Zealand
  * AS7545       114       69       45   39.5%   TPG Internet Pty Ltd
  * AS684         86       42       44   51.2%   MBNET-AS
  * AS4740       354      312       42   11.9%   ASN-OZEMAIL (Ozemail Pty Ltd)
  * AS2711        97       55       42   43.3%   SUNBELT-AS
  * AS7046       130       89       41   31.5%   UUNET-CUSTOMER
  * AS3561       897      857       40    4.5%   MCI
  * AS852        156      117       39   25.0%   CANET-ASN
  * 
  * 
  * For the rest of the previous weeks gain information please see
  * http://www.employees.org:80/~tbates/cidr-report.html
  * 
  * 2) Weekly Delta
  * 
  * Please see
  * http://www.employees.org:80/~tbates/cidr-report.html
  * for this part of the report
  * 
  * 3) Interesting aggregates
  * 
  * Please see
  * http://www.employees.org:80/~tbates/cidr-report.html
  * for this part of the report