Cisco Systems 12000 series manual Describes the significant fields shown in the display, CF-911

show usb device

Table 143 describes the significant fields shown in the display.

Table 143 show usb device Field Descriptions

Field	Description
Device handle	Internal memory handle allocated to the device.
Device Class code	The class code supported by the device.
	This number is allocated by the USB-IF. If this field is reset
	to 0, each interface within a configuration specifies its own
	class information, and the various interfaces operate
	independently. If this field is set to a value between 1 and
	FEH, the device supports different class specifications on
	different interfaces, and the interfaces may not operate
	independently. This value identifies the class definition used
	for the aggregate interfaces. If this field is set to FFH, the
	device class is vendor-specific.
Device Subclass code	The subclass code supported by the device. This number is
	allocated by the USB-IF.
Device Protocol	The protocol supported by the device. If this field is set to 0,
	the device does not use class-specific protocols on a device
	basis. If this field is set to 0xFF, the device uses a
	vendor-specific protocol on a device basis.
Interface Class code	The class code supported by the interface. If the value is set
	to 0xFF, the interface class is vendor specific. All other
	values are allocated by the USB-IF.
Interface Subclass code	The subclass code supported by the interface. All values are
	allocated by the USB-IF.
Interface Protocol	The protocol code supported by the interface. If this field is
	set to 0, the device does not use a class-specific protocol on
	this interface. If this field is set to 0xFF, the device uses a
	vendor-specific protocol for this interface.
Max Packet	Maximum data packet size, in bytes.

	Cisco IOS Configuration Fundamentals Command Reference
July 2008		CF-911