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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 30 12:00:00 PST 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A summary of the last weeks changes in terms of withdrawn and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 30Jan98
0) General Status
Table History
-------------
Date Prefixes
230198 48658
240198 48671
250198 48612
260198 49037
270198 49125
280198 49117
290198 50396
300198 50242
Check http://www.employees.org/~tbates/cidr.plot.html for a plot
of the table history.
Possible Bogus Routes
---------------------
*** Bogus 95.9.43.0/24 from AS2878
*** Bogus 212.192.0.0/16 from AS5568
*** Bogus 212.255.0.0/16 from AS2871
AS Summary
----------
Number of ASes in routing system: 3169
Number of ASes announcing only one prefix: 1477 (766 cidr, 711 classful)
Largest number of cidr routes: 1103 announced by AS719
Largest number of classful routes: 1022 announced by AS701
1) Gains by aggregating at the origin AS level
--- 30Jan98 ---
ASnum NetsNow NetsCIDR NetGain % Gain Description
AS2493 726 386 340 46.8% iSTAR Internet, Inc.
AS6235 495 252 243 49.1% Intermedia Communications, Inc.
AS4293 424 215 209 49.3% IMCI
AS174 856 659 197 23.0% Performance Systems International
AS816 598 417 181 30.3% UUNET Canada (ASN-UUNETCA-AS4)
AS3602 456 304 152 33.3% Sprint Canada Inc.
AS3749 200 59 141 70.5% TECNET
AS701 1022 909 113 11.1% Alternet
AS1785 456 371 85 18.6% NYSERNet Backbone
AS3751 123 47 76 61.8% SNET-AS
AS2048 165 93 72 43.6% LaNet
AS5668 107 40 67 62.6% Century Telephone Inc.
AS1239 602 539 63 10.5% SprintLink Backbone
AS3804 203 141 62 30.5% Bell Solutions
AS1 842 784 58 6.9% BBNPLANET
AS271 111 56 55 49.5% BCnet Backbone
AS3464 119 67 52 43.7% Alabama Research and Education Ne
AS719 519 468 51 9.8% LANLINK autonomous system
AS549 210 160 50 23.8% ONet Backbone
AS7545 115 67 48 41.7% TPG Internet Pty Ltd
AS72 84 36 48 57.1% Schlumberger Information Network
AS4763 128 80 48 37.5% Telstra New Zealand
AS1221 263 218 45 17.1% AARNET-AS
AS7046 123 81 42 34.1% UUNET-CUSTOMER
AS2711 97 55 42 43.3% SUNBELT-AS
AS684 85 44 41 48.2% Manitoba Regional Network Backbon
AS3561 914 873 41 4.5% MCI
AS852 155 116 39 25.2% AGT Advance Communication
AS6335 62 24 38 61.3% NTRNET
AS1691 162 124 38 23.5% BCTEL
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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