Cisco IOS Software Release 12.1(1)AA

Document ID: 20332

Early Deployment (ED) Release Summary

Description of the Release

Cisco IOS® Software Release 12.1AA is a specific technology early deployment (STED) release based on 12.1 Mainline. It has been optimized to provide a stable vehicle for the access and dial platforms. This release supports the Cisco AS5200, AS5300 and AS5800 platforms. During its life cycle, this release will provide a limited number of features in order to sustain higher stability and availability. Cisco IOS Software Release 12.1AA can also be fully synched to the 12.1 mainline in order to inherit bug fixes committed to that main release.

For more information, see the following pages:

Cisco IOS Software Release 12.1 Product Bulletin

Product Support

Major Features

Platforms/Images

TCP Clear - 5800 introduced in 12.1(1)AA

RPM MIB - 5000, introduced in AS5300 12.1(2)AA

Cisco AS5200, AS5300 and AS5800

c5200-i4-l
c5300-is-mz
c5800-p4-mz
dsc-c5800-mz

Based On

Ported Into

Synchronization Points with Major Releases

Cisco IOS Software Release 12.1(1)

Cisco IOS Software Release 12.1T

Release Type

Cisco IOS Software Release 12.1(1)AA is an Early Deployment Release. EDs as a group are based on Major Releases of Cisco IOS Release Software. ED Releases are a vehicle to quickly deliver new functionality, addressing the need for early availability of products. These Releases provide new technologies for customers to deploy in a limited manner in their networks.

Target Market

Cisco IOS Software Release 12.1(1)AA is for use by Dial-up Service Providers

Maintenance Releases

Maintenance updates for an ED Release usually deliver support for additional platforms or features beyond what was available at the Release's frame check sequence (FCS). While the addition of platforms and features at maintenance releases can have a destabilizing effect on the release, Early Deployment maintenance releases are subject to the same level of testing as the maintenance releases for Major Releases.

Interim Builds

As part of the normal development process, interim builds incorporating bug fixes are created between maintenance releases. Each interim build is usually tested in a limited manner. Fixes in the interim builds are incorporated in the subsequent maintenance release, which is fully regression tested.

Recommended Customer Migration Path

Customer Upgrade From

Customer Upgrade to

Cisco IOS Software Release 12.1AA

Cisco IOS Software Release 12.2 Mainline

The recommended migration path is the logical superseding release, which brings additional features and hardware support to the network without loss of previously configured functionality.