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? re: Tony Bates' CIDR Report
From: Larry Vaden <vaden () texoma net>
Date: Fri, 04 Jul 1997 21:24:21 -0500

On another list, we're discussing whether small ISPs should be able to
obtain globally routable /19s.

A well respected member of the NANOG community has suggested that "routers
would fall over" if the /19s were granted.

As you know, Tony Bates publishes the weekly CIDR report;  therein he makes
the following comment:

"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."

Today's data indicates 2,791 router slots are involved in the "Top 30".

Could these router slots really be made available as Tony suggests?

If not, why not?

Thank you for your time and for your responses.  If you will, respond to
pagans () texoma net also.

If you prefer to remain off the record, reply privately with *OFF THE
RECORD* in your subject line.

Here's today's data as published at
<http://www.employees.org/~tbates/cidr-report.html#General_Status>:

 --- 04Jul97 ---
ASnum    NetsNow NetsCIDR  NetGain  % Gain   Description

AS174       1148      819      329   28.7%   Performance Systems International
AS2493       766      460      306   39.9%   i*internet
AS3602       556      309      247   44.4%   Sprint Canada Inc.
AS2048       251      120      131   52.2%   LANET-1
AS1691       301      172      129   42.9%   BCTEL
AS6541       186       59      127   68.3%   GTE Intelligent Network Services 
AS3804       248      135      113   45.6%   Bell Solutions
AS1         1032      922      110   10.7%   BBNPLANET
AS1967       186       82      104   55.9%   Middle East Technical University 
AS839        125       26       99   79.2%   North West Territories Regional N
AS701        972      875       97   10.0%   Alternet
AS7195       121       43       78   64.5%   INTERRED
AS816        318      248       70   22.0%   UUNET Canada (ASN-UUNETCA-AS4)
AS2704       256      186       70   27.3%   HOOKUP-NET-A
AS4293       108       44       64   59.3%   IMCI
AS549        250      189       61   24.4%   ONet Backbone
AS5668        72       13       59   81.9%   Century Telephone Inc.
AS4648       190      134       56   29.5%   NZIX 2
AS3561       942      890       52    5.5%   MCI
AS6181        53        4       49   92.5%   FUSE-NET
AS3799        74       26       48   64.9%   IDS
AS97         175      128       47   26.9%   JvNCnet
AS813        208      161       47   22.6%   UUNET Canada (ASN-UUNETCA-AS1)
AS719        565      518       47    8.3%   LANLINK autonomous system
AS4454        74       27       47   63.5%   TNET-AS
AS4763       100       56       44   44.0%   Telstra New Zealand
AS2711        98       57       41   41.8%   SUNBELT-AS
AS271         98       57       41   41.8%   BCnet Backbone
AS3749        75       35       40   53.3%   TECNET
AS225         63       25       38   60.3%   VIRGINIA-AS
                              ----
                              2791





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