An indication of the administrative status of the protocol
filtering on this interface.
- on(1) indicates that the interface will send and receive the
traffic for protocol specified in
cseProtocolFilterPortProtocol.
- off(2) indicates that the interface will not receive
traffic for this protocol, or if this feature is not
supported.
- auto(3) indicates that the corresponding
cseProtocolFilterPortOperStatus will transit to 'on' after
receiving one packet of this protocol type.