> # DHCHAP Compatibility with Existing Cisco MDS Features

> This section identifies the impact of configuring the DHCHAP feature along with existing Cisco MDS features:

> - PortChannel interfaces—If DHCHAP is enabled for ports belonging to a PortChannel, DHCHAP authentication is performed at the physical interface level, not at the PortChannel level.
> - FCIP interfaces—The DHCHAP protocol works with the FCIP interface just as it would with a physical interface.
> - Port security or fabric binding—Fabric binding policies are enforced based on identities authenticated by DHCHAP.
> - VSANs—DHCHAP authentication is not done on a per-VSAN basis.
> - High availability—DHCHAP authentication works transparently with existing HA features.

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