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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 Jan 8 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A summary of the last weeks changes in terms of withdrawn and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.
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CIDR REPORT for 08Jan99
0) General Status
Table History
-------------
Date Prefixes
010199 55011
020199 55001
030199 54615
040199 54770
050199 54954
060199 54958
070199 55003
080199 54976
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: 4389
Number of ASes announcing only one prefix: 2167 (1158 cidr, 1009 classful)
Largest number of cidr routes: 351 announced by AS3561
Largest number of classful routes: 1010 announced by AS701
1) Gains by aggregating at the origin AS level
--- 08Jan99 ---
ASnum NetsNow NetsCIDR NetGain % Gain Description
AS271 391 145 246 62.9% UNKNOWN
AS3749 231 71 160 69.3% UNKNOWN
AS701 1010 861 149 14.8% UNKNOWN
AS2493 326 179 147 45.1% UNKNOWN
AS174 669 546 123 18.4% UNKNOWN
AS5668 131 35 96 73.3% UNKNOWN
AS4200 188 97 91 48.4% UNKNOWN
AS4755 150 68 82 54.7% UNKNOWN
AS1267 111 30 81 73.0% UNKNOWN
AS4293 207 135 72 34.8% UNKNOWN
AS549 220 154 66 30.0% UNKNOWN
AS4740 393 329 64 16.3% UNKNOWN
AS8517 133 74 59 44.4% UNKNOWN
AS1221 381 323 58 15.2% UNKNOWN
AS7046 251 195 56 22.3% UNKNOWN
AS72 89 37 52 58.4% UNKNOWN
AS7657 140 89 51 36.4% UNKNOWN
AS3493 248 197 51 20.6% UNKNOWN
AS7545 114 64 50 43.9% UNKNOWN
AS1239 530 483 47 8.9% UNKNOWN
AS10928 95 48 47 49.5% UNKNOWN
AS7496 74 28 46 62.2% UNKNOWN
AS577 205 160 45 22.0% UNKNOWN
AS852 175 133 42 24.0% UNKNOWN
AS719 452 410 42 9.3% UNKNOWN
AS3221 84 42 42 50.0% UNKNOWN
AS803 71 35 36 50.7% UNKNOWN
AS7122 109 75 34 31.2% UNKNOWN
AS1 503 470 33 6.6% UNKNOWN
AS6897 46 14 32 69.6% UNKNOWN
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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