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Cisco IOS Software Releases 12.1 E

Cisco IOS Software Release 12.1EA

Document ID: 30040




This document contains information on these Cisco IOS® software releases:

  • Cisco IOS Software Release 12.1(4)EA1
  • Cisco IOS Software Release 12.1(22)EA3
  • Cisco IOS Software Release 12.1(22)EA6
  • Cisco IOS Software Release 12.1(22)EA7

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Description of the Release

Cisco IOS® Software Release 12.1(4)EA1 is optimized for Layer 2 and Layer 3 switching on the Catalyst 3550 platforms. This release is based on Cisco IOS Software Release 12.1(4)E. This release is the first introduction of the Catalyst 3550 hardware platform. Catalyst 3550 is targeted as an access layer switch which provides comprehensive Quality of Service (QoS) and Security access control list (ACL) support as well as IP routing.

Product and Feature Support

 

Cisco IOS Software Release 12.1(4)EA1 supports these platforms:

Product/Feature Image Name Memory  Requirements
Cisco platform c3550
  • c3550-i5q3l2-mz
  • c3550-i5q3l2-mz.tar
See Release Notes

Cisco IOS Software Release 12.1(22)EA3 supports these platforms:

Product/Feature Image Name Memory  Requirements
Cisco platform 2940 c2940-i6k2l2q4-mz
c2940-i6k2l2q4-tar
c2940-i6q4l2-mz
c2940-i6q4l2-tar
See Release Notes
Cisco platform 2950 c2950-i6k2l2q4-mz
c2950-i6k2l2q4-tar
c2950-i6q4l2-mz
c2950-i6q4l2-tar
See Release Notes
Cisco platform 2950lre c2950lre-i6k2l2q4-mz
c2950lre-i6k2l2q4-tar
c2950lre-i6l2q4-mz
c2950lre-i6l2q4-tar
See Release Notes
Cisco platform 2955 c2955-i6k2l2q4-mz
c2955-i6k2l2q4-tar
c2955-i6q4l2-mz
c2955-i6q4l2-tar
See Release Notes
Cisco platform 3550 c3550-i5k2l2q3-mz
c3550-i5k2l2q3-tar
c3550-i5q3l2-mz
c3550-i5q3l2-tar
c3550-i9k2l2q3-mz
c3550-i9k2l2q3-tar
c3550-i9q3l2-mz
c3550-i9q3l2-tar
See Release Notes

Note: The features delivered with this XED release will be immediately incorporated into Cisco IOS Software Release 12.1(22)EA6 and subsequent Cisco IOS Software 12.1E releases.



Cisco IOS Software Release 12.1(22)EA6 supports these platforms:

Product/Feature Image Name Memory  Requirements
Cisco platform 2940 c2940-i6k2l2q4-mz
c2940-i6k2l2q4-tar
c2940-i6q4l2-mz
c2940-i6q4l2-tar
See Release Notes
Cisco platform 2950 c2950-i6k2l2q4-mz
c2950-i6k2l2q4-tar
c2950-i6q4l2-mz
c2950-i6q4l2-tar
See Release Notes
Cisco platform 2950lre c2950lre-i6k2l2q4-mz
c2950lre-i6k2l2q4-tar
c2950lre-i6l2q4-mz
c2950lre-i6l2q4-tar
See Release Notes
Cisco platform 2955 c2955-i6k2l2q4-mz
c2955-i6k2l2q4-tar
c2955-i6q4l2-mz
c2955-i6q4l2-tar
See Release Notes
Cisco platform 3550 c3550-i5k2l2q3-mz
c3550-i5k2l2q3-tar
c3550-i9k2l2q3-mz
c3550-i9k2l2q3-tar
c3550-i5q3l2-mz
c3550-i5q3l2-tar
c3550-i9q3l2-mz
c3550-i9q3l2-tar
See Release Notes

Cisco IOS Software Release 12.1(22)EA7 supports these platforms:

Product/Feature Image Name Memory  Requirements
Cisco platform 2940 c2940-i6k2l2q4-mz
c2940-i6k2l2q4-tar
c2940-i6q4l2-mz
c2940-i6q4l2-tar
See Release Notes
Cisco platform 2950 c2950-i6k2l2q4-mz
c2950-i6k2l2q4-tar
c2950-i6q4l2-mz
c2950-i6q4l2-tar
See Release Notes
Cisco platform 2950lre c2950lre-i6k2l2q4-mz
c2950lre-i6k2l2q4-tar
c2950lre-i6l2q4-mz
c2950lre-i6l2q4-tar
See Release Notes
Cisco platform 2955 c2955-i6k2l2q4-mz
c2955-i6k2l2q4-tar
c2955-i6q4l2-mz
c2955-i6q4l2-tar
See Release Notes
Cisco platform 3550 c3550-i5k2l2q3-mz
c3550-i5k2l2q3-tar
c3550-i5q3l2-mz
c3550-i5q3l2-tar
c3550-i9k2l2q3-mz
c3550-i9k2l2q3-tar
c3550-i9q3l2-mz
c3550-i9q3l2-tar
See Release Notes

Support Pages

For more information, consult the following web pages:

Release Documentation

Parent Release Documentation

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Other Links

Target Market

Cisco Systems, Inc. released Cisco IOS Software Release 12.1(22)EA as long-lived ED release for the Cisco Catalyst 3550 platform. It is targeted for the traditional midmarket and Enterprise branch customers.

Lifecycle of Release

Cisco IOS Software Release Reference Guide

Milestones Y2K Compliance Release Designation

Cisco IOS Software Release 12.1(4)EA1

CCO FCS: May 21, 2001

MFG FCS: May 28, 2001

EOS:

EOE:

EOL:

Cisco IOS Software Release 12.1(22)EA3

CCO FCS: January 31, 2005

MFG FCS: N/A

EOS:

EOE:

EOL:

Cisco IOS Software Release 12.1(22)EA6

CCO FCS: October 27, 2005

MFG FCS: N/A

EOS:

EOE:

EOL:

Cisco IOS Software Release 12.1(22)EA7

CCO FCS: February 2, 2006

MFG FCS: N/A

EOS:

EOE:

EOL:

Yes ED Release

Maintenance Releases

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
12.1(22)EA6 - Periodic syncs to E-train will be performed. The expected life of the 12.1EA train is 18-24 months.

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Important Notes: N/A

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 the Cisco IOS Software Release 12.1(4)EA1, see the Projected Release Dates for Cisco IOS Software Release Product Bulletin.

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Updated: May 17, 2006 Document ID: 30040