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North American Network Operators Group Date Prev | Date Next | Date Index | Thread Index | Author Index | Historical The Cidr Report
This is an auto-generated mail on Fri Jul 23 12:00:00 PDT 1999
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A summary of the last weeks changes in terms of withdrawn and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.
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CIDR REPORT for 23Jul99
0) General Status
Table History
-------------
Date Prefixes
160799 61126
170799 61270
180799 60986
190799 61251
200799 61293
210799 61468
220799 61453
230799 61494
Check http://www.employees.org/~tbates/cidr.plot.html for a plot
of the table history.
Possible Bogus Routes
---------------------
AS Summary
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Number of ASes in routing system: 5334
Number of ASes announcing only one prefix: 2793 (1543 cidr, 1250 classful)
Largest number of cidr routes: 445 announced by AS701
Largest number of classful routes: 847 announced by AS701
1) Gains by aggregating at the origin AS level
--- 23Jul99 ---
ASnum NetsNow NetsCIDR NetGain % Gain Description
AS271 348 145 203 58.3% BCnet Backbone
AS2609 122 28 94 77.0% EUnet-TN
AS577 281 188 93 33.1% Bell Canada Backbone
AS174 573 481 92 16.1% Performance Systems International
AS3749 152 63 89 58.6% TECNET
AS4293 235 149 86 36.6% IMCI
AS7046 320 238 82 25.6% UUNET-CUSTOMER
AS1221 505 429 76 15.0% TELSTRA-AS
AS7545 141 66 75 53.2% TPG Internet Pty Ltd
AS7496 108 34 74 68.5% Power Up
AS7657 221 150 71 32.1% The Internet Group Limited
AS10928 119 49 70 58.8% UNKNOWN
AS4200 167 105 62 37.1% AGIS (Apex Global Information Ser
AS6944 63 6 57 90.5% RapidSite, Inc.
AS4740 307 252 55 17.9% Ozemail Pty Ltd (ASN-OZEMAIL)
AS4755 133 79 54 40.6% Videsh Sanchar Nigam Ltd. India
AS9269 73 22 51 69.9% Hong Kong CTI
AS719 458 407 51 11.1% LANLINK autonomous system
AS684 89 44 45 50.6% Manitoba Regional Network Backbon
AS803 78 34 44 56.4% SaskNet Backbone
AS549 218 174 44 20.2% ONet Backbone
AS2493 112 69 43 38.4% iSTAR Internet, Inc.
AS3737 106 68 38 35.8% PenTeleData Inc. (ASN-PTD)
AS1785 251 214 37 14.7% NYSERNet Backbone
AS1 490 455 35 7.1% BBNPLANET
AS701 847 813 34 4.0% Alternet
AS10724 42 8 34 81.0% UNKNOWN
AS6762 33 2 31 93.9% Telecom Italia international high
AS4307 32 1 31 96.9% SVINET-1
AS11515 32 1 31 96.9% UNKNOWN
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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