
The Cisco IOS v1.22 – Aaron Balchunas
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All original material copyright © 2007 by
Aaron Balchunas (aaron@routeralley.com),
unless otherwise noted. All other material copyright © of their respective owners.
This material may be copied and used freely, but may not be altered or sold without the expressed written
consent of the owner of the above copyright. Updated material may be found at http://www.routeralley.com.
3
IOS Version Numbers (continued)
The IOS .bin file stored in flash follows a specific naming convention.
Observe the following IOS image:
c2600-ik9s-mz.121-3.T.bin
The following is an explanation of each component of the above file name:
C2600 ik9s m z 121 3 T
Cisco
Hardware
Feature
Set
Memory
Location
Compression
Format
Maintenance
Release #
Individual
Release #
Train
Identifier
(Reference: http://www.cisco.com/en/US/products/sw/iosswrel/ps1828/products_white_paper09186a008018305e.shtml)
The IOS supports a wide variety of feature sets. The following is a list of
common feature sets (and is by no means comprehensive):
• is
• ipbase
• ipvoice
• advsecurityk9
• advipservicesk9
• ik9s
• jk9s
• io3
• bin
(Reference: http://www.cisco.com/en/US/products/hw/routers/ps259/prod_bulletin09186a0080161082.html)
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