The Cidr Report
Tony Bates
tbates at cisco.com
Fri Jun 26 19:00:04 UTC 1998
This is an auto-generated mail on Fri Jun 26 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A summary of the last weeks changes in terms of withdrawn and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.
------------------------------------------------------------------------------
CIDR REPORT for 26Jun98
0) General Status
Table History
-------------
Date Prefixes
190698 51379
200698 51329
210698 51500
220698 51541
230698 51362
240698 51537
250698 51460
260698 51523
Check http://www.employees.org/~tbates/cidr.plot.html for a plot
of the table history.
Possible Bogus Routes
---------------------
*** Bogus 213.102.1.0 from AS3259
*** Bogus 214.0.0.0/8 from AS568
AS Summary
----------
Number of ASes in routing system: 3669
Number of ASes announcing only one prefix: 1763 (935 cidr, 828 classful)
Largest number of cidr routes: 350 announced by AS3561
Largest number of classful routes: 1145 announced by AS701
1) Gains by aggregating at the origin AS level
--- 26Jun98 ---
ASnum NetsNow NetsCIDR NetGain % Gain Description
AS4293 452 247 205 45.4% IMCI
AS2493 488 283 205 42.0% iSTAR Internet, Inc.
AS3602 511 313 198 38.7% Sprint Canada Inc.
AS701 1145 950 195 17.0% Alternet
AS271 336 145 191 56.8% BCnet Backbone
AS3749 218 70 148 67.9% TECNET
AS174 725 587 138 19.0% Performance Systems International
AS4755 106 32 74 69.8% Videsh Sanchar Nigam Ltd. India
AS3218 78 7 71 91.0% AS-RSSI
AS7046 218 148 70 32.1% UUNET-CUSTOMER
AS3221 112 42 70 62.5% EENet Autonomous System
AS6227 96 28 68 70.8% !nteract
AS10928 107 42 65 60.7% UNKNOWN
AS5668 116 54 62 53.4% Century Telephone Inc.
AS3804 208 146 62 29.8% Bell Solutions
AS4740 382 328 54 14.1% ASN-OZEMAIL (Ozemail Pty Ltd)
AS3403 180 127 53 29.4% TIAC
AS2685 133 83 50 37.6% IBM Global Network - US
AS549 194 145 49 25.3% ONet Backbone
AS8517 120 72 48 40.0% ULAKNET-ASN
AS72 85 37 48 56.5% Schlumberger Information Network
AS6335 68 20 48 70.6% NTRNET
AS4539 73 25 48 65.8% NETROPOLIS
AS4200 145 97 48 33.1% AGIS (Apex Global Information Ser
AS1239 543 496 47 8.7% SprintLink Backbone
AS719 449 405 44 9.8% LANLINK autonomous system
AS852 158 116 42 26.6% AGT Advance Communication
AS762 118 80 38 32.2% WELLFLEET-AS
AS6181 65 28 37 56.9% FUSE-NET
AS4763 109 72 37 33.9% Telstra New Zealand
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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