Cisco Cisco IOS Software Release 12.2(27)SBC

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QoS CLI Migration from PRE2 to PRE3
First Published: November, 2006
Revised: July, 2007
The Quality of Service (QoS) Command Line Interface (CLI) Migration from PRE2 to PRE3 feature 
provides QoS CLI backward-compatibility between the PRE2 and PRE3, thereby enabling the PRE3 to 
accept PRE2-style commands. 
History for the QoS CLI Migration from PRE2 to PRE3 Feature
Finding Support Information for Platforms and Cisco IOS Software Images
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Contents
Release
Modification
12.2(31)SB2
This feature was introduced and implemented on the Cisco 10000 series 
router for the PRE3.