Only features that were introduced or modified in Cisco IOS Release 12.0(22)S, Cisco IOS Release 12.2(18)S, Cisco IOS Release 12.2(28)SB, Cisco IOS Releases 12.2(33)SRA, Cisco IOS Release 12.2(33)SXH, or a later release appear in the table. Not all features may be supported in your Cisco IOS software release.
Use Cisco Feature Navigator to find information about platform support and software image support. Cisco Feature Navigator enables you to determine which Cisco IOS and Catalyst OS software images support a specific software release, feature set, or platform. To access Cisco Feature Navigator, go to http://www.cisco.com/go/cfn. An account on Cisco.com is not required.
Note Table 1 lists only the Cisco IOS software release that introduced support for a given feature in a given Cisco IOS software release train. Unless noted otherwise, subsequent releases of that Cisco IOS software release train also support that feature.
1Most HA features are not supported in Cisco IOS T or mainline software release trains.
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