[28237] in North American Network Operators' Group
The Cidr Report
daemon@ATHENA.MIT.EDU (Tony Bates)
Fri Apr 21 15:05:09 2000
Message-Id: <200004211900.MAA19207@lovefm.cisco.com>
To: nanog@merit.edu
Cc: tbates@cisco.com, eof-list@ripe.net, apops@apnic.net,
routing-wg@ripe.net
Date: Fri, 21 Apr 2000 12:00:03 -0700
From: Tony Bates <tbates@cisco.com>
Errors-To: owner-nanog-outgoing@merit.edu
This is an auto-generated mail on Fri Apr 21 12:00:01 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A summary of the last weeks changes in terms of withdrawn and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 21Apr00
0) General Status
Table History
-------------
Date Prefixes
060400 74813
070400 75152
080400 75151
090400 75137
100400 75215
110400 75403
120400 75730
130400 75919
Check http://www.employees.org/~tbates/cidr.plot.html for a plot
of the table history.
Possible Bogus Routes
---------------------
AS Summary
----------
Number of ASes in routing system: 4983
Number of ASes announcing only one prefix: 1838 (0 cidr, 1838 classful)
Largest number of cidr routes: 0 announced by
Largest number of classful routes: 1043 announced by AS701
1) Gains by aggregating at the origin AS level
--- 21Apr00 ---
ASnum NetsNow NetsCIDR NetGain % Gain Description
AS271 351 131 220 62.7% BCnet Backbone
AS7046 474 322 152 32.1% COQUI-NET PRTC Internet
AS9269 163 26 137 84.0% Hong Kong CTI
AS9706 153 30 123 80.4% Pusan Metropolitan City Office of
AS1221 468 357 111 23.7% TELSTRA-AS
AS2609 124 17 107 86.3% EUnet-TN
AS7657 268 170 98 36.6% The Internet Group Limited
AS7545 160 65 95 59.4% TPG Internet Pty Ltd
AS705 309 214 95 30.7% ALTERNET-AS
AS4293 305 215 90 29.5% Internal ASN for C&W
AS174 558 470 88 15.8% Performance Systems International
AS7496 126 39 87 69.0% Power Up
AS6429 205 121 84 41.0% RDC-INTERNET
AS7029 153 72 81 52.9% ALLTELNET
AS9304 105 29 76 72.4% Hutchcity
AS577 250 174 76 30.4% Bell Backbone
AS209 458 385 73 15.9% Qwest Communications
AS9557 80 15 65 81.2% Pakistan Telecommunication Compan
AS1727 144 80 64 44.4% MRMS-WEST
AS724 205 143 62 30.2% DLA-ASNBLOCK-AS
AS3602 309 247 62 20.1% Sprint Canada Inc.
AS7260 109 49 60 55.0% NORLIGHT
AS701 1043 983 60 5.8% Alternet
AS7018 518 459 59 11.4% AT&T WorldNet Service Backbone
AS3749 114 56 58 50.9% TECNET
AS816 333 277 56 16.8% UUNET Canada (ASN-UUNETCA-AS4)
AS4740 337 281 56 16.6% Ozemail Pty Ltd (ASN-OZEMAIL)
AS6595 101 48 53 52.5% DODDSEUR
AS7568 68 18 50 73.5% C.S. Communications Co., Ltd.
AS2563 125 76 49 39.2% KoRean Education Network
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
