[28070] in North American Network Operators' Group
The Cidr Report
daemon@ATHENA.MIT.EDU (Tony Bates)
Fri Apr 7 15:04:05 2000
Message-Id: <200004071900.MAA21221@lovefm.cisco.com>
To: nanog@merit.edu
Cc: tbates@cisco.com, eof-list@ripe.net, apops@apnic.net,
routing-wg@ripe.net
Date: Fri, 07 Apr 2000 12:00:06 -0700
From: Tony Bates <tbates@cisco.com>
Errors-To: owner-nanog-outgoing@merit.edu
This is an auto-generated mail on Fri Apr 7 12:00:02 PDT 2000
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A summary of the last weeks changes in terms of withdrawn and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 07Apr00
0) General Status
Table History
-------------
Date Prefixes
310300 74847
010400 74802
020400 74868
030400 74911
040400 75068
050400 74793
060400 74813
070400 75152
Check http://www.employees.org/~tbates/cidr.plot.html for a plot
of the table history.
Possible Bogus Routes
---------------------
*** Bogus 65.45.0.0/19 from AS10585
*** Bogus 219.91.160.0/22 from AS7742
*** Bogus 219.91.164.0/23 from AS7742
AS Summary
----------
Number of ASes in routing system: 7138
Number of ASes announcing only one prefix: 3959 (2159 cidr, 1800 classful)
Largest number of cidr routes: 982 announced by AS701
Largest number of classful routes: 1040 announced by AS701
1) Gains by aggregating at the origin AS level
--- 07Apr00 ---
ASnum NetsNow NetsCIDR NetGain % Gain Description
AS271 437 152 285 65.2% BCnet Backbone
AS7046 468 320 148 31.6% COQUI-NET PRTC Internet
AS9706 155 21 134 86.5% Pusan Metropolitan City Office of
AS9269 159 27 132 83.0% Hong Kong CTI
AS1221 493 380 113 22.9% TELSTRA-AS
AS2609 124 17 107 86.3% EUnet-TN
AS7657 269 171 98 36.4% The Internet Group Limited
AS705 314 218 96 30.6% ALTERNET-AS
AS7545 159 64 95 59.7% TPG Internet Pty Ltd
AS174 561 472 89 15.9% Performance Systems International
AS4293 293 205 88 30.0% Internal ASN for C&W
AS7496 125 38 87 69.6% Power Up
AS6429 207 122 85 41.1% RDC-INTERNET
AS9304 108 26 82 75.9% Hutchcity
AS577 255 176 79 31.0% Bell Backbone
AS7029 142 70 72 50.7% ALLTELNET
AS209 446 378 68 15.2% Qwest Communications
AS9557 80 15 65 81.2% Pakistan Telecommunication Compan
AS1727 155 92 63 40.6% MRMS-WEST
AS3602 309 247 62 20.1% Sprint Canada Inc.
AS7260 110 50 60 54.5% NORLIGHT
AS7018 519 459 60 11.6% AT&T WorldNet Service Backbone
AS701 1040 981 59 5.7% Alternet
AS3749 120 61 59 49.2% TECNET
AS4740 339 281 58 17.1% Ozemail Pty Ltd (ASN-OZEMAIL)
AS724 199 143 56 28.1% DLA-ASNBLOCK-AS
AS816 331 276 55 16.6% UUNET Canada (ASN-UUNETCA-AS4)
AS7568 66 18 48 72.7% C.S. Communications Co., Ltd.
AS6595 87 42 45 51.7% DODDSEUR
AS5106 73 29 44 60.3% AADS-COLUMBUS
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
