The Cidr Report
Tony Bates
tbates at cisco.com
Fri Dec 24 20:00:02 UTC 1999
This is an auto-generated mail on Fri Dec 24 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A summary of the last weeks changes in terms of withdrawn and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 24Dec99
0) General Status
Table History
-------------
Date Prefixes
171299 68465
181299 68472
191299 68445
201299 68620
211299 68566
221299 68665
231299 68991
241299 69384
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 64.4.128.0/19 from AS13932
*** Bogus 64.4.192.0/19 from AS6214
*** Bogus 64.5.0.0/19 from AS14107
*** Bogus 64.5.64.0/19 from AS6601
*** Bogus 64.6.32.0/20 from AS13740
*** Bogus 64.6.64.0/20 from AS10726
*** Bogus 64.6.96.0/20 from AS8049
*** Bogus 64.6.160.0/23 from AS11354
*** Bogus 64.6.160.0/20 from AS11354
*** Bogus 64.6.162.0/24 from AS11354
*** Bogus 64.6.192.0/21 from AS14215
*** Bogus 64.6.200.0/23 from AS14215
*** Bogus 64.6.204.0/23 from AS14215
*** Bogus 64.6.206.0/23 from AS14215
*** Bogus 64.7.0.0/24 from AS6461
*** Bogus 64.7.1.0/24 from AS3967
*** Bogus 64.7.2.0/23 from AS3967
*** Bogus 64.7.4.0/23 from AS3967
*** Bogus 64.7.32.0/20 from AS8010
*** Bogus 64.7.64.0/20 from AS2914
*** Bogus 64.7.128.0/20 from AS11647
*** Bogus 64.7.160.0/20 from AS13549
*** Bogus 64.8.0.0/20 from AS7843
*** Bogus 64.8.24.0/21 from AS7843
*** Bogus 64.9.0.0/19 from AS7843
*** Bogus 64.9.32.0/20 from AS701
*** Bogus 64.9.48.0/20 from AS1239
*** Bogus 64.9.128.0/18 from AS5003
*** Bogus 64.10.0.0/16 from AS816
*** Bogus 64.10.10.0/24 from AS705
*** Bogus 64.10.11.0/24 from AS705
*** Bogus 64.13.0.0/20 from AS6921
*** Bogus 64.13.0.0/19 from AS6921
*** Bogus 64.13.16.0/21 from AS6921
*** Bogus 64.13.24.0/21 from AS6921
*** Bogus 64.14.0.0/19 from AS3967
*** Bogus 64.14.32.0/19 from AS3967
*** Bogus 64.14.64.0/20 from AS3967
*** Bogus 64.14.80.0/20 from AS3967
*** Bogus 64.14.96.0/20 from AS3967
*** Bogus 64.14.112.0/20 from AS3967
*** Bogus 64.14.128.0/20 from AS3967
*** Bogus 64.16.0.0/19 from AS14078
*** Bogus 64.21.0.0/18 from AS8001
*** Bogus 219.5.47.0 from AS2548
*** Bogus 219.91.160.0/22 from AS7742
*** Bogus 219.91.164.0/23 from AS7742
AS Summary
----------
Number of ASes in routing system: 6329
Number of ASes announcing only one prefix: 3363 (1845 cidr, 1518 classful)
Largest number of cidr routes: 674 announced by AS701
Largest number of classful routes: 959 announced by AS701
1) Gains by aggregating at the origin AS level
--- 24Dec99 ---
ASnum NetsNow NetsCIDR NetGain % Gain Description
AS271 383 141 242 63.2% BCnet Backbone
AS7046 400 258 142 35.5% UUNET-CUSTOMER
AS2609 126 11 115 91.3% EUnet-TN
AS9269 134 21 113 84.3% Hong Kong CTI
AS1221 638 525 113 17.7% TELSTRA-AS
AS7657 274 178 96 35.0% The Internet Group Limited
AS7545 153 60 93 60.8% TPG Internet Pty Ltd
AS1653 129 38 91 70.5% SUNET Swedish University Network
AS6429 203 116 87 42.9% RDC-INTERNET
AS4293 238 151 87 36.6% Internal ASN for C&W
AS174 567 482 85 15.0% Performance Systems International
AS9706 104 23 81 77.9% Pusan Metropolitan City Office of
AS7496 121 41 80 66.1% Power Up
AS577 259 181 78 30.1% Bell Canada Backbone
AS3749 135 62 73 54.1% TECNET
AS705 229 163 66 28.8% ALTERNET-AS
AS4200 171 105 66 38.6% AGIS (Apex Global Information Ser
AS9304 78 20 58 74.4% Hutchcity
AS4740 342 284 58 17.0% Ozemail Pty Ltd (ASN-OZEMAIL)
AS816 234 178 56 23.9% UUNET Canada (ASN-UUNETCA-AS4)
AS209 346 291 55 15.9% Qwest Communications
AS684 92 46 46 50.0% Manitoba Regional Network Backbon
AS1 522 482 40 7.7% GTE Internetworking
AS4755 109 70 39 35.8% Videsh Sanchar Nigam Ltd. India
AS701 959 921 38 4.0% Alternet
AS6528 45 7 38 84.4% WORLD-LYNX
AS7390 50 14 36 72.0% NLSLAN
AS7029 77 41 36 46.8% ALLTELNET
AS6172 150 114 36 24.0% HOME-NET-1
AS1727 117 82 35 29.9% MRMS-WEST
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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