proc IsPortInCaptureState { port } {
    # port format: 1/3
    #
    # If port is in capture state, will return "ready"
    # If port is not in capture state, will return:
    #     "::ixNet::ERROR-Data  capture is not selected on the specified port."

    set vport [GetVportMapping $port]
    if {[ixNet getAttribute $vport/capture -dataCaptureState] == "ready"} {
	return 1
    }
    if {[ixNet getAttribute $vport/capture -controlCaptureState] == "ready"} {
	return 1
    }
    return 0
}