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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 Oct 23 12:00:00 PDT 1998
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A summary of the last weeks changes in terms of withdrawn and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 23Oct98
0) General Status
Table History
-------------
Date Prefixes
161098 53167
171098 53211
181098 53097
191098 53201
201098 54125
211098 53433
221098 53407
231098 53585
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: 4133
Number of ASes announcing only one prefix: 2007 (1066 cidr, 941 classful)
Largest number of cidr routes: 344 announced by AS3561
Largest number of classful routes: 944 announced by AS701
1) Gains by aggregating at the origin AS level
--- 23Oct98 ---
ASnum NetsNow NetsCIDR NetGain % Gain Description
AS1785 654 397 257 39.3% NYSERNet Backbone
AS271 355 153 202 56.9% BCnet Backbone
AS4293 413 240 173 41.9% IMCI
AS3749 232 72 160 69.0% TECNET
AS2493 349 197 152 43.6% iSTAR Internet, Inc.
AS3857 332 184 148 44.6% Internet Connect, Inc.
AS701 944 815 129 13.7% Alternet
AS174 690 561 129 18.7% Performance Systems International
AS4200 191 98 93 48.7% AGIS (Apex Global Information Ser
AS5668 128 41 87 68.0% Century Telephone Inc.
AS7046 268 188 80 29.9% UUNET-CUSTOMER
AS3221 118 44 74 62.7% EENet Autonomous System
AS3804 229 156 73 31.9% Bell Solutions
AS4755 120 55 65 54.2% Videsh Sanchar Nigam Ltd. India
AS4740 395 331 64 16.2% Ozemail Pty Ltd (ASN-OZEMAIL)
AS8517 125 72 53 42.4% ULAKNET-ASN
AS7545 116 64 52 44.8% TPG Internet Pty Ltd
AS6335 71 19 52 73.2% NTRNET
AS549 195 146 49 25.1% ONet Backbone
AS72 87 39 48 55.2% Schlumberger Information Network
AS1239 538 491 47 8.7% SprintLink Backbone
AS1221 361 315 46 12.7% AARNET-AS
AS803 77 33 44 57.1% SaskNet Backbone
AS3790 61 17 44 72.1% RACSANET
AS7122 130 87 43 33.1% MTS ADVANCED Network Policy
AS852 167 126 41 24.6% AGT Advance Communication
AS4539 68 28 40 58.8% NETROPOLIS
AS10928 88 49 39 44.3% UNKNOWN
AS6181 64 30 34 53.1% FUSE-NET
AS2707 64 31 33 51.6% WEC
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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