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Chapter 3. Characteristics of Cisco IOS:... > Release Type Definitions and Example...

Release Type Definitions and Examples

The various types and examples of the release type fields are defined in Table 3-4:

Table 3-4. Cisco IOS Release Type Definitions
Release TypeDefinitions
Release SoftwareMaintenance build images on major and Consolidated Cisco IOS Technology.
Early Deployment Release SoftwareMaintenance build images on a Specific Technology and X releases.
Maintenance Interim SoftwareInterim builds on a major and Consolidated Cisco IOS Technology release.
Early Deployment Maintenance Interim SoftwareInterim build of a Specific Technology release (there are no interim builds on X releases).
Cisco Development Test VersionShadow releases on major and CTED releases and pre-integration branch images (not for customer use).
Early Deployment Cisco Development Test VersionShadow releases on a BU-Specific Technology releases. (To date, there are and have been no BU-specific release shadow builds.)
Beta Test SoftwarePre-FCS builds on major releases (main plus CTED) for the purpose of alpha, beta, and system testing.
Early Deployment Beta Test SoftwarePre-FCS builds on STED releases for the purpose of alpha, beta, and system testing.
'fc1' build vs. 'fc2' build'fc2' is an internal rebuild of the 'fc1' build. 'fc2' is usually created to fix a specific defect found in the 'fc1' build. An 'fc2' build cannot be created if the first build was already released to a public directory.
Maintenance Rebuild12.0(2)T1 is a maintenance rebuild of 12.0(2)T, 12.0(3a) is a maintenance rebuild of 12.0(3), and 11.3(6)AA2 is a maintenance rebuild of 11.3(6)AA1, which is a rebuild of 11.3(6)AA. If a catastrophic defect is found in a maintenance version of software after it was released to the public, Cisco might decide to fix the defect and re-release a new version with the fix as a rebuild image. The defective image is usually deferred and made inaccessible to customers.
ExperimentalCisco IOS special images. Image built by individual engineers to incorporate engineering changes.



  

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