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Cisco IOS Software Releases 12.1 Special and Early Deployments

Cisco IOS Software Release 12.1(5)YB

Document ID: 20325




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Description of the Release

X Release:
Cisco IOS® Software Release 12.1(5)YB is an X release optimized for 805/820/2600/3620/3640/3660/1700 platforms. This release is based upon 12.1(5)T. Cisco 1751 is a derivative product of the Cisco 1750 Modular Access Router, which can support both analog and digital voice applications. Cisco 1751 will replace 1750.

Product and Feature Support

 

 
 
 
 

The Cisco IOS Software Release 12.1(5)YB  will support the following images:

805 Platform

  • c805-y6-mw    IP
  • c805-sy6-mw    IP PLUS
  • c805-nsy6-mw    IP/IPX PLUS
  • c805-oy6-mw    IP/Firewall
  • c805-osy656i-mw    IP/Firewall/IPSec PLUS
  • c805-nosy656i-mw    IP/IPX/Firewall/IPSec PLUS
  • c805-k2osy6-mw     IP/Firewall/IPSec 3DES PLUS
  • c805-k2nosy6-mw    IP/IPX/Firewall/IPSec 3DES PLUS)

820 Platform

  • c820-y6-mz    IP
  • c820-osy656i-mz    IP/Firewall/IPsec PLUS
  • c820-k2osy6-mz    IP//Firewall/IPSec 3DES PLUS
  • c820-k2nosy6-mz    IP/IPX/Firewall/IPsec 3DES PLUS
  • c820-v6y6-mz    IP (Voice + Data)
  • c820-nsv6y6-mz    IP/IPX PLUS ( Voice + Data)
  • c820-osv6y656i-mz    IP/Voice Firewall/ IPsec PLUS
  • c820-k2nosv6y6-mz    IP/IPX Voice Firewall/Ipsec 3DES PLUS

2600 Image Names and Descriptions

  • c2600-a3jk2s-mz    Cisco 2600 Series IOS ENTERPRISE/SNASW PLUS IPSEC 3DES
  • c2600-a3js-mz    Cisco 2600 Series IOS ENTERPRISE/SNASW PLUS
  • c2600-a3js56i-mz    Cisco 2600 Series IOS ENTERPRISE/SNASW PLUS IPSEC 56
  • c2600-do3s-mz    Cisco 2600 Series IOS IP/IPX/AT/DEC/FW/IDS PLUS
  • c2600-ds-mz    Cisco 2600 Series IOS IP/IPX/AT/DEC PLUS
  • c2600-ik2o3s-mz    Cisco 2600 Series IOS IP/FW/IDS PLUS IPSEC 3DES
  • c2600-ik2s-mz    Cisco 2600 Series IOS IP PLUS IPSEC 3DES
  • c2600-io3s56i-mz   Cisco 2600 Series IOS IP/FW/IDS PLUS IPSEC 56
  • c2600-is-mz    Cisco 2600 Series IOS IP PLUS
  • c2600-is56i-mz    Cisco 2600 Series IOS IP PLUS IPSEC 56
  • c2600-jk2o3s-mz    Cisco 2600 Series IOS ENTERPRISE/FW/IDS PLUS IPSEC 3DES
  • c2600-jk2s-mz    Cisco 2600 Series IOS ENTERPRISE PLUS IPSEC 3DES
  • c2600-jo3s56i-mz   Cisco 2600 Series IOS ENTERPRISE/FW/IDS PLUS IPSEC 56
  • c2600-js-mz    Cisco 2600 Series IOS ENTERPRISE PLUS
  • c2600-js56i-mz    Cisco 2600 Series IOS ENTERPRISE PLUS IPSEC 56
  • c2600-jsx-mz    Cisco 2600 Series IOS ENTERPRISE PLUS/H323 MCM

3600 Image Names and Descriptions

  • c3620-a3jk2s-mz   Cisco 3620 Series IOS ENTERPRISE/SNASW PLUS IPSEC 3DES
  • c3620-a3js-mz    Cisco 3620 Series IOS ENTERPRISE/SNASW PLUS
  • c3620-a3jk2s-mz    Cisco 3620 Series IOS ENTERPRISE/SNASW PLUS IPSEC 3DES
  • c3620-a3js-mz    Cisco 3620 Series IOS ENTERPRISE/SNASW PLUS
  • c3620-a3js56i-mz    Cisco 3620 Series IOS ENTERPRISE/SNASW PLUS IPSEC 56
  • c3620-do3s-mz    Cisco 3620 Series IOS IP/IPX/AT/DEC/FW/IDS PLUS
  • c3620-ds-mz    Cisco 3620 Series IOS IP/IPX/AT/DEC PLUS
  • c3620-ik2o3s-mz    Cisco 3620 Series IOS IP/FW/IDS PLUS IPSEC 3DES
  • c3620-ik2s-mz    Cisco 3620 Series IOS IP PLUS IPSEC 3DES
  • c3620-io3s56i-mz   Cisco 3620 Series IOS IP/FW/IDS PLUS IPSEC 56
  • c3620-is-mz    Cisco 3620 Series IOS IP PLUS
  • c3620-is56i-mz    Cisco 3620 Series IOS IP PLUS IPSEC 56
  • c3620-ix-mz    Cisco 3620 Series IOS IP/H323
  • c3620-jk2o3s-mz    Cisco 3620 Series IOS ENTERPRISE/FW/IDS PLUS IPSEC 3DES
  • c3620-jk2s-mz    Cisco 3620 Series IOS ENTERPRISE PLUS IPSEC 3DES
  • c3620-jo3s56i-mz   Cisco 3620 Series IOS ENTERPRISE/FW/IDS PLUS IPSEC 56
  • c3620-js-mz    Cisco 3620 Series IOS ENTERPRISE PLUS
  • c3620-js56i-mz    Cisco 3620 Series IOS ENTERPRISE PLUS IPSEC 56
  • c3620-jsx-mz    Cisco 3620 Series IOS ENTERPRISE PLUS/H323 MCM
  • c3640-a3jk2s-mz    Cisco 3640 Series IOS ENTERPRISE/SNASW PLUS IPSEC 3DES
  • c3640-a3js-mz    Cisco 3640 Series IOS ENTERPRISE/SNASW PLUS
  • c3640-a3js56i-mz    Cisco 3640 Series IOS ENTERPRISE/SNASW PLUS IPSEC 56

1700 Image Names and Descriptions

Support Pages

 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

For more information, consult the following web pages: 

Release Documentation

Parent Release Documentation Other Links

Lifecycle of Release

 

 
 
 

Cisco IOS Reference Guide
 
Milestones Y2K Compliance Release Designation
CCO FCS: Feb, 12 2001

MFG FCS:Feb 26, 2001

EOS: 

EOE:

EOL:

Yes XED Release
Maintenance Releases CCO customers can view the Projected Release Dates for Cisco IOS Software Product Bulletin

It is highly recommended that Release Notes are used to determine if a maintenance release should be used. Release Notes provide announcements of new features and a summary of known caveats at the time of the renumber. 

Maintenance Cycle: Download
Image
Cisco IOS Software Release 12.1(5)YB:
No maintenance plans for an X release.
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Interim Builds
 
Short-lived X releases do not provide interim builds. 

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Recommended Customer Migration Path

To view the projected release date of Cisco IOS Software Release 12.1(5)YA, see:
Projected Release Dates for Cisco IOS Software Product Bulletin



Updated: Feb 18, 2003 Document ID: 20325