Re: The Cidr Report

  • To: nanog at merit dot edu, eof-list at ripe dot net, apops at apnic dot net, routing-wg at ripe dot net, Pekka.Haara at hpy dot fi
  • Subject: Re: The Cidr Report
  • From: Tony Bates <tbates at cisco dot com>
  • Date: Fri, 30 Jan 1998 12:25:52 -0800
  • In-reply-to: Your message of Fri, 30 Jan 1998 12:00:02 PST. <199801302000.MAA22885 at lovefm dot cisco dot com>
  • Sender: owner-apops@apnic.net
    • As you can see things are startng to move up recently. I'd suggest
      folks take a look at the "Interesting Aggregates" section on the web
      page as it appears there's been a large influx of routes
      here. Particularly AS719 who look like they may have a config error
      with many many /28s showing up. They aren't the only ones as there
      seems to be a lot of potential savings to be made here just by
      eye-balling the aggregates.
      
      	Thanks,
      			--Tony
      
       Tony Bates <tbates at cisco dot com> writes:
        * 
        * This is an auto-generated mail on Fri Jan 30 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        *       A summary of the last weeks changes in terms of withdrawn and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 30Jan98
        * 
        * 
        * 0) General Status
        * 
        * Table History
        * -------------
        * 
        * Date	Prefixes
        * 230198	48658
        * 240198	48671
        * 250198	48612
        * 260198	49037
        * 270198	49125
        * 280198	49117
        * 290198	50396
        * 300198	50242
        * 
        * Check http://www.employees.org/~tbates/cidr.plot.html for a plot
        * of the table history.
        * 
        * 
        * Possible Bogus Routes
        * ---------------------
        * 
        * *** Bogus 95.9.43.0/24 from AS2878
        * *** Bogus 212.192.0.0/16 from AS5568
        * *** Bogus 212.255.0.0/16 from AS2871
        * 
        * AS Summary
        * ----------
        * 
        * Number of ASes in routing system:                 3169
        * 
        * Number of ASes announcing only one prefix:        1477 (766 cidr, 711 class
        * ful)
        * 
        * Largest number of  cidr routes:                   1103 announced by  AS719
        * Largest number of classful routes:                1022 announced by  AS701
        * 
        * 
        * 
        * 1) Gains by aggregating at the origin AS level
        * 
        *  --- 30Jan98 ---
        * ASnum    NetsNow NetsCIDR  NetGain  % Gain   Description
        * 
        * AS2493       726      386      340   46.8%   iSTAR Internet, Inc.
        * AS6235       495      252      243   49.1%   Intermedia Communications, Inc
        * .
        * AS4293       424      215      209   49.3%   IMCI
        * AS174        856      659      197   23.0%   Performance Systems Internatio
        * nal
        * AS816        598      417      181   30.3%   UUNET Canada (ASN-UUNETCA-AS4)
        * AS3602       456      304      152   33.3%   Sprint Canada Inc.
        * AS3749       200       59      141   70.5%   TECNET
        * AS701       1022      909      113   11.1%   Alternet
        * AS1785       456      371       85   18.6%   NYSERNet Backbone
        * AS3751       123       47       76   61.8%   SNET-AS
        * AS2048       165       93       72   43.6%   LaNet
        * AS5668       107       40       67   62.6%   Century Telephone Inc.
        * AS1239       602      539       63   10.5%   SprintLink Backbone
        * AS3804       203      141       62   30.5%   Bell Solutions
        * AS1          842      784       58    6.9%   BBNPLANET
        * AS271        111       56       55   49.5%   BCnet Backbone
        * AS3464       119       67       52   43.7%   Alabama Research and Education
        *  Ne
        * AS719        519      468       51    9.8%   LANLINK autonomous system
        * AS549        210      160       50   23.8%   ONet Backbone
        * AS7545       115       67       48   41.7%   TPG Internet Pty Ltd
        * AS72          84       36       48   57.1%   Schlumberger Information Netwo
        * rk
        * AS4763       128       80       48   37.5%   Telstra New Zealand
        * AS1221       263      218       45   17.1%   AARNET-AS
        * AS7046       123       81       42   34.1%   UUNET-CUSTOMER
        * AS2711        97       55       42   43.3%   SUNBELT-AS
        * AS684         85       44       41   48.2%   Manitoba Regional Network Back
        * bon
        * AS3561       914      873       41    4.5%   MCI
        * AS852        155      116       39   25.2%   AGT Advance Communication
        * AS6335        62       24       38   61.3%   NTRNET
        * AS1691       162      124       38   23.5%   BCTEL
        * 
        * 
        * 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
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