This parameter shows the frame handling mode on this link. When IP mode is defined, the IP frames received on this link are handled and routed by the IP module in the PS. If IP mode is disabled, the IP frames will not be handled by the IP module and will be handled as bridged data. When Bridging mode is enabled, the PS will perform bridging from this link according to the bridging configuration. If disabled, bridge data will be ignored. When LLC is enabled, frames received on this link are handled by the LLC module in the PS. If disabled, the LLC frames will be treated as bridged data. Any combination of bridging, ip and LLC is allowed. If both IP and LLC are enabled, LLC frames will be handled by the LLC module, IP frames will be handled by the IP module, and all the other frames will treated as bridged data. If the bridge mode is disabled, the other frames will be discarded.