> # Extended BB_credits on Generation 2 and Generation 3 Switching Modules

> To use this feature on Generation 2 or Generation 3 switching modules, you must meet the following requirements:

> - Display the interface configuration in the Information pane.
> - Obtain the Enterprise package (ENTERPRISE_PKG) license (see the NX-OS Family Licensing Guide).
> - Configure this feature in any port on a Generation 2 switch module. See the "Extended BB_Credits" topic for more information on extended BB_credits on Generation 2 switching modules.

> Note Extended BB_credits are not supported on the Cisco MDS 9124 Fabric Switch, Cisco MDS 9134 Fabric Switch, the Cisco Fabric Switch for HP c-Class BladeSystem, and the Cisco Fabric Switch for IBM BladeCenter.

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