Cisco Cisco IOS Software Release 12.2(22)S
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Regex Engine Performance Enhancement
The Regex Engine Performance Enhancement feature introduces a new regular expression engine that is
designed to process complex regular expressions. This new regular expression engine does not replace
the existing engine. The existing engine is preferred for simple regular expressions and is the default
engine and in Cisco IOS software. Either engine can be selected from the command-line interface (CLI).
designed to process complex regular expressions. This new regular expression engine does not replace
the existing engine. The existing engine is preferred for simple regular expressions and is the default
engine and in Cisco IOS software. Either engine can be selected from the command-line interface (CLI).
Feature History for the Regex Engine Performance Enhancement Feature
Finding Support Information for Platforms and Cisco IOS Software Images
Use Cisco Feature Navigator to find information about platform support and Cisco IOS software image
support. Access Cisco Feature Navigator at
support. Access Cisco Feature Navigator at
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the login dialog box and follow the instructions that appear.
the login dialog box and follow the instructions that appear.
Contents
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Release
Modification
12.0(26)S
This feature was introduced.
12.3(4)T
This feature was integrated into Cisco IOS Release 12.3(4)T.
12.2(22)S
This feature was integrated into Cisco IOS Release 12.2(22)S.