Access Gateway and native VCS modes
In native VCS mode, the switch can function as part of a VCS Fabric cluster, but cannot connect to a FC fabric through N_Ports. When enabled in AG mode, the switch can still function as part of a VCS Fabric cluster, but can now connect directly with a FC "edge" fabric switch through F_Port to N_Port connections.
All VCS and Network OS features are available to a switch in AG mode, which is enabled by default. If you need to enable AG mode (for example, if upgrading from a legacy version), use the enable command.