The Cidr Report
Tony Bates
tbates at cisco.com
Fri Dec 10 20:00:02 UTC 1999
This is an auto-generated mail on Fri Dec 10 12:00:00 PST 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A summary of the last weeks changes in terms of withdrawn and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.
------------------------------------------------------------------------------
CIDR REPORT for 10Dec99
0) General Status
Table History
-------------
Date Prefixes
031299 67454
041299 67626
051299 67585
061299 67819
071299 67663
081299 67694
091299 68242
101299 67903
Check http://www.employees.org/~tbates/cidr.plot.html for a plot
of the table history.
Possible Bogus Routes
---------------------
*** Bogus 64.4.64.0/19 from AS7398
*** Bogus 64.6.32.0/20 from AS13740
*** Bogus 64.6.64.0/20 from AS10726
*** Bogus 64.6.206.0/23 from AS14215
*** Bogus 64.7.0.0/24 from AS6461
*** Bogus 219.91.160.0/22 from AS7742
*** Bogus 219.91.164.0/23 from AS7742
AS Summary
----------
Number of ASes in routing system: 6207
Number of ASes announcing only one prefix: 3302 (1819 cidr, 1483 classful)
Largest number of cidr routes: 659 announced by AS701
Largest number of classful routes: 981 announced by AS701
1) Gains by aggregating at the origin AS level
--- 10Dec99 ---
ASnum NetsNow NetsCIDR NetGain % Gain Description
AS271 383 141 242 63.2% BCnet Backbone
AS7046 393 256 137 34.9% UUNET-CUSTOMER
AS1221 640 524 116 18.1% TELSTRA-AS
AS2609 126 11 115 91.3% EUnet-TN
AS9706 112 11 101 90.2% Pusan Metropolitan City Office of
AS3602 370 269 101 27.3% Sprint Canada Inc.
AS9269 128 29 99 77.3% Hong Kong CTI
AS7657 270 174 96 35.6% The Internet Group Limited
AS1653 125 35 90 72.0% SUNET Swedish University Network
AS7545 149 61 88 59.1% TPG Internet Pty Ltd
AS174 562 476 86 15.3% Performance Systems International
AS4293 229 144 85 37.1% Internal ASN for C&W
AS577 259 181 78 30.1% Bell Canada Backbone
AS7496 113 37 76 67.3% Power Up
AS3749 137 62 75 54.7% TECNET
AS4200 175 108 67 38.3% AGIS (Apex Global Information Ser
AS705 160 98 62 38.8% ALTERNET-AS
AS816 253 193 60 23.7% UUNET Canada (ASN-UUNETCA-AS4)
AS4740 347 289 58 16.7% Ozemail Pty Ltd (ASN-OZEMAIL)
AS701 981 934 47 4.8% Alternet
AS684 92 46 46 50.0% Manitoba Regional Network Backbon
AS209 294 253 41 13.9% Qwest Communications
AS1 521 480 41 7.9% GTE Internetworking
AS9304 60 22 38 63.3% Hutchcity
AS6528 45 7 38 84.4% WORLD-LYNX
AS8013 132 96 36 27.3% PSINET-CA
AS549 198 162 36 18.2% ONet Backbone
AS4755 104 68 36 34.6% Videsh Sanchar Nigam Ltd. India
AS7568 51 16 35 68.6% C.S. Communications Co., Ltd.
AS11127 110 76 34 30.9% 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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