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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 Jul 10 12:00:01 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A summary of the last weeks changes in terms of withdrawn and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 10Jul98
0) General Status
Table History
-------------
Date Prefixes
020798 51673
030798 51528
050798 51481
060798 51579
070798 52104
080798 52116
090798 52255
100798 52359
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
*** Bogus 215.0.0.0/9 from AS568
*** Bogus 216.0.0.0/14 from AS2548
*** Bogus 216.13.4.0/23 from AS6401
*** Bogus 216.13.32.0/19 from AS6401
*** Bogus 216.15.0.0/19 from AS10368
*** Bogus 216.15.128.0/19 from AS7393
*** Bogus 216.19.0.0/18 from AS4492
*** Bogus 216.214.0.0/18 from AS7194
AS Summary
----------
Number of ASes in routing system: 3726
Number of ASes announcing only one prefix: 1823 (952 cidr, 871 classful)
Largest number of cidr routes: 353 announced by AS3561
Largest number of classful routes: 1139 announced by AS701
1) Gains by aggregating at the origin AS level
--- 10Jul98 ---
ASnum NetsNow NetsCIDR NetGain % Gain Description
AS4293 461 253 208 45.1% IMCI
AS3602 514 310 204 39.7% Sprint Canada Inc.
AS2493 485 281 204 42.1% iSTAR Internet, Inc.
AS701 1139 937 202 17.7% Alternet
AS271 339 144 195 57.5% BCnet Backbone
AS3749 223 66 157 70.4% TECNET
AS174 727 587 140 19.3% Performance Systems International
AS2685 267 162 105 39.3% IBM Global Network - US
AS4755 114 39 75 65.8% Videsh Sanchar Nigam Ltd. India
AS3221 112 42 70 62.5% EENet Autonomous System
AS5668 120 51 69 57.5% Century Telephone Inc.
AS7046 226 161 65 28.8% UUNET-CUSTOMER
AS3804 216 153 63 29.2% Bell Solutions
AS4740 394 334 60 15.2% ASN-OZEMAIL (Ozemail Pty Ltd)
AS10928 102 45 57 55.9% UNKNOWN
AS3403 181 127 54 29.8% TIAC
AS549 205 152 53 25.9% ONet Backbone
AS8517 123 72 51 41.5% ULAKNET-ASN
AS6335 69 18 51 73.9% NTRNET
AS72 85 37 48 56.5% Schlumberger Information Network
AS4539 73 25 48 65.8% NETROPOLIS
AS1239 543 496 47 8.7% SprintLink Backbone
AS719 449 403 46 10.2% LANLINK autonomous system
AS3218 70 24 46 65.7% AS-RSSI
AS4200 140 95 45 32.1% AGIS (Apex Global Information Ser
AS852 158 117 41 25.9% AGT Advance Communication
AS7545 102 61 41 40.2% TPG Internet Pty Ltd
AS762 118 80 38 32.2% WELLFLEET-AS
AS1785 290 252 38 13.1% NYSERNet Backbone
AS6181 65 28 37 56.9% FUSE-NET
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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