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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 24 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A summary of the last weeks changes in terms of withdrawn and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 24Jul98
0) General Status
Table History
-------------
Date Prefixes
170798 52681
180798 52642
190798 52713
200798 52774
210798 53149
220798 52850
230798 52922
240798 52857
Check http://www.employees.org/~tbates/cidr.plot.html for a plot
of the table history.
Possible Bogus Routes
---------------------
AS Summary
----------
Number of ASes in routing system: 3754
Number of ASes announcing only one prefix: 1827 (958 cidr, 869 classful)
Largest number of cidr routes: 353 announced by AS3561
Largest number of classful routes: 1137 announced by AS701
1) Gains by aggregating at the origin AS level
--- 24Jul98 ---
ASnum NetsNow NetsCIDR NetGain % Gain Description
AS3602 525 313 212 40.4% Sprint Canada Inc.
AS701 1137 934 203 17.9% Alternet
AS271 344 144 200 58.1% BCnet Backbone
AS4293 469 273 196 41.8% IMCI
AS2493 432 254 178 41.2% iSTAR Internet, Inc.
AS3749 223 66 157 70.4% TECNET
AS174 723 586 137 18.9% Performance Systems International
AS2685 267 162 105 39.3% IBM Global Network - US
AS5668 134 50 84 62.7% Century Telephone Inc.
AS3221 112 42 70 62.5% RIPE-ASNBLOCK4
AS4969 86 20 66 76.7% Net Access
AS3804 220 155 65 29.5% Bell Solutions
AS4755 114 50 64 56.1% Videsh Sanchar Nigam Ltd. India
AS7046 228 165 63 27.6% UUNET-CUSTOMER
AS4740 393 336 57 14.5% ASN-OZEMAIL (Ozemail Pty Ltd)
AS10928 101 46 55 54.5% UNKNOWN
AS3403 180 126 54 30.0% TIAC
AS8517 122 72 50 41.0% UNKNOWN
AS6335 68 19 49 72.1% NTRNET
AS549 202 153 49 24.3% ONet Backbone
AS72 85 37 48 56.5% Schlumberger Information Network
AS1239 539 492 47 8.7% SprintLink Backbone
AS719 452 406 46 10.2% LANLINK-AS
AS4539 71 26 45 63.4% NETROPOLIS
AS4200 144 99 45 31.2% AGIS (Apex Global Information Ser
AS852 157 116 41 26.1% AGT Advance Communication
AS1785 293 252 41 14.0% NYSERNet Backbone
AS10459 48 7 41 85.4% WANSASN
AS10921 57 19 38 66.7% KIHNETWORK
AS762 117 80 37 31.6% WELLFLEET-AS
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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