The Cidr Report
Tony Bates
tbates at cisco.com
Fri Oct 9 19:00:01 UTC 1998
This is an auto-generated mail on Fri Oct 9 12:00:00 PDT 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A summary of the last weeks changes in terms of withdrawn and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 09Oct98
0) General Status
Table History
-------------
Date Prefixes
021098 52291
031098 52114
041098 52386
051098 52453
061098 52385
071098 52472
081098 52755
091098 52585
Check http://www.employees.org/~tbates/cidr.plot.html for a plot
of the table history.
Possible Bogus Routes
---------------------
*** Bogus 100.100.100.0/24 from AS8013
AS Summary
----------
Number of ASes in routing system: 4085
Number of ASes announcing only one prefix: 1976 (1038 cidr, 938 classful)
Largest number of cidr routes: 344 announced by AS3561
Largest number of classful routes: 941 announced by AS701
1) Gains by aggregating at the origin AS level
--- 09Oct98 ---
ASnum NetsNow NetsCIDR NetGain % Gain Description
AS271 346 149 197 56.9% BCnet Backbone
AS4293 418 246 172 41.1% IMCI
AS2493 356 203 153 43.0% iSTAR Internet, Inc.
AS3749 224 75 149 66.5% TECNET
AS174 699 567 132 18.9% PSINET
AS701 941 814 127 13.5% ALTERNET-AS
AS4200 191 98 93 48.7% AGIS-NET
AS5668 128 41 87 68.0% CENTURY
AS3352 254 174 80 31.5% Ibernet, Internet Access Network
AS7046 261 186 75 28.7% UUNET-CUSTOMER
AS3221 118 44 74 62.7% EENet Autonomous System
AS3804 227 154 73 32.2% Bell Solutions
AS4755 116 54 62 53.4% Videsh Sanchar Nigam Ltd. India
AS4740 390 330 60 15.4% OzEmail ISP
AS6335 70 21 49 70.0% NTRNET
AS549 187 138 49 26.2% ONet Backbone
AS7545 110 62 48 43.6% TPG Internet Pty Ltd
AS72 87 39 48 55.2% Schlumberger Information Network
AS1239 538 491 47 8.7% SprintLink
AS803 77 33 44 57.1% SaskNet Backbone
AS852 166 125 41 24.7% AGT Advance Communication
AS4539 68 28 40 58.8% NETROPOLIS
AS1221 325 285 40 12.3% AARNET-AS
AS10928 86 49 37 43.0% UNKNOWN
AS10459 47 10 37 78.7% WANSASN
AS7122 119 83 36 30.3% MTS ADVANCED Network Policy
AS6181 64 30 34 53.1% FUSE-NET
AS2707 64 31 33 51.6% WEC
AS1273 61 28 33 54.1% ECRC Network
AS7496 66 35 31 47.0% Power Up
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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