nanog mailing list archives
The Cidr Report
From: Tony Bates <tbates () cisco com>
Date: Fri, 27 Feb 1998 12:00:02 -0800
This is an auto-generated mail on Fri Feb 27 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A summary of the last weeks changes in terms of withdrawn and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.
------------------------------------------------------------------------------
CIDR REPORT for 27Feb98
0) General Status
Table History
-------------
Date Prefixes
200298 49181
210298 49167
220298 49121
230298 49244
240298 49374
250298 49380
260298 49515
270298 49830
Check http://www.employees.org/~tbates/cidr.plot.html for a plot
of the table history.
Possible Bogus Routes
---------------------
*** Bogus 64.0.0.0 from AS7777
*** Bogus 65.0.0.0 from AS7777
*** Bogus 66.0.0.0 from AS7777
*** Bogus 67.0.0.0 from AS7777
*** Bogus 68.0.0.0 from AS7777
*** Bogus 69.0.0.0 from AS7777
*** Bogus 70.0.0.0 from AS7777
*** Bogus 71.0.0.0 from AS7777
*** Bogus 72.0.0.0 from AS7777
*** Bogus 73.0.0.0 from AS7777
*** Bogus 74.0.0.0 from AS7777
*** Bogus 75.0.0.0 from AS7777
*** Bogus 76.0.0.0 from AS7777
*** Bogus 77.0.0.0 from AS7777
*** Bogus 78.0.0.0 from AS7777
*** Bogus 79.0.0.0 from AS7777
*** Bogus 80.0.0.0 from AS7777
*** Bogus 81.0.0.0 from AS7777
*** Bogus 82.0.0.0 from AS7777
*** Bogus 83.0.0.0 from AS7777
*** Bogus 84.0.0.0 from AS7777
*** Bogus 85.0.0.0 from AS7777
*** Bogus 86.0.0.0 from AS7777
*** Bogus 87.0.0.0 from AS7777
*** Bogus 88.0.0.0 from AS7777
*** Bogus 89.0.0.0 from AS7777
*** Bogus 90.0.0.0 from AS7777
*** Bogus 91.0.0.0 from AS7777
*** Bogus 92.0.0.0 from AS7777
*** Bogus 93.0.0.0 from AS7777
*** Bogus 94.0.0.0 from AS7777
*** Bogus 95.0.0.0 from AS7777
*** Bogus 96.0.0.0 from AS7777
*** Bogus 97.0.0.0 from AS7777
*** Bogus 98.0.0.0 from AS7777
*** Bogus 99.0.0.0 from AS7777
*** Bogus 100.0.0.0 from AS7777
*** Bogus 101.0.0.0 from AS7777
*** Bogus 102.0.0.0 from AS7777
*** Bogus 103.0.0.0 from AS7777
*** Bogus 104.0.0.0 from AS7777
*** Bogus 105.0.0.0 from AS7777
*** Bogus 106.0.0.0 from AS7777
*** Bogus 107.0.0.0 from AS7777
*** Bogus 108.0.0.0 from AS7777
*** Bogus 109.0.0.0 from AS7777
*** Bogus 110.0.0.0 from AS7777
*** Bogus 111.0.0.0 from AS7777
*** Bogus 112.0.0.0 from AS7777
*** Bogus 113.0.0.0 from AS7777
*** Bogus 114.0.0.0 from AS7777
*** Bogus 115.0.0.0 from AS7777
*** Bogus 116.0.0.0 from AS7777
*** Bogus 117.0.0.0 from AS7777
*** Bogus 118.0.0.0 from AS7777
*** Bogus 119.0.0.0 from AS7777
*** Bogus 120.0.0.0 from AS7777
*** Bogus 121.0.0.0 from AS7777
*** Bogus 122.0.0.0 from AS7777
*** Bogus 123.0.0.0 from AS7777
*** Bogus 124.0.0.0 from AS7777
*** Bogus 125.0.0.0 from AS7777
*** Bogus 126.0.0.0 from AS7777
*** Bogus 213.0.0.0/8 from AS7777
*** Bogus 214.0.0.0/8 from AS7777
*** Bogus 215.0.0.0/8 from AS7777
*** Bogus 216.0.0.0/8 from AS7777
*** Bogus 217.0.0.0/8 from AS7777
*** Bogus 218.0.0.0/8 from AS7777
*** Bogus 219.0.0.0/8 from AS7777
*** Bogus 220.0.0.0/8 from AS7777
*** Bogus 221.0.0.0/8 from AS7777
*** Bogus 222.0.0.0/8 from AS7777
*** Bogus 223.0.0.0/8 from AS7777
AS Summary
----------
Number of ASes in routing system: 3268
Number of ASes announcing only one prefix: 1551 (799 cidr, 752 classful)
Largest number of cidr routes: 429 announced by AS3561
Largest number of classful routes: 1125 announced by AS701
1) Gains by aggregating at the origin AS level
--- 27Feb98 ---
ASnum NetsNow NetsCIDR NetGain % Gain Description
AS2493 575 352 223 38.8% iSTAR Internet, Inc.
AS4293 426 223 203 47.7% IMCI
AS816 604 432 172 28.5% UUNET Canada (ASN-UUNETCA-AS4)
AS701 1125 961 164 14.6% Alternet
AS174 798 637 161 20.2% Performance Systems International
AS3602 459 306 153 33.3% Sprint Canada Inc.
AS3749 198 55 143 72.2% TECNET
AS3751 125 48 77 61.6% SNET-AS
AS1221 419 342 77 18.4% AARNET-AS
AS5668 110 38 72 65.5% Century Telephone Inc.
AS3804 203 141 62 30.5% Bell Solutions
AS3221 93 33 60 64.5% EENet Autonomous System
AS1239 582 523 59 10.1% SprintLink Backbone
AS271 112 56 56 50.0% BCnet Backbone
AS3464 117 63 54 46.2% Alabama Research and Education Ne
AS549 211 162 49 23.2% ONet Backbone
AS72 84 36 48 57.1% Schlumberger Information Network
AS4763 128 80 48 37.5% Telstra New Zealand
AS7046 133 89 44 33.1% UUNET-CUSTOMER
AS6181 66 22 44 66.7% FUSE-NET
AS4755 76 32 44 57.9% Videsh Sanchar Nigam Ltd. India
AS3561 886 844 42 4.7% MCI
AS2711 97 55 42 43.3% SUNBELT-AS
AS10722 73 31 42 57.5% Aluminum Co. of America
AS852 157 117 40 25.5% AGT Advance Communication
AS6335 63 23 40 63.5% NTRNET
AS4740 345 306 39 11.3% ASN-OZEMAIL (Ozemail Pty Ltd)
AS3493 166 127 39 23.5% INTERLINK
AS1 782 743 39 5.0% BBNPLANET
AS719 437 400 37 8.5% LANLINK autonomous system
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
Current thread:
- Re: The Cidr Report Vince Fuller (Feb 02)
- Re: The Cidr Report Tony Bates (Feb 01)
- <Possible follow-ups>
- The Cidr Report Tony Bates (Feb 13)
- Re: The Cidr Report Tony Bates (Feb 13)
- The Cidr Report Tony Bates (Feb 20)
- The Cidr Report Tony Bates (Feb 27)