Firmware is usually divided into three layers: a USB Function layer, implementing device functionality; the Logical Device
layer, handling standard USB requests and low-speed data transfers, plus device enumeration and power management; and the Bus Interface layer that provides the interface between the USB Logical Device
and the hardware.
The EX3300 also supports Juniper's Virtual Chassis technology, which allows users to interconnect up to six EX3300 switches into a single logical device
so they can be managed as one, sources said.
Juniper's Virtual Chassis fabric technology on the EX4200 switches can enable up to 10 interconnected switches to operate as a single, logical device
, allowing for increased capacity with reduced complexity.
Allows clusterwide logical device
naming and volume and file system operations.
Its Virtual Chassis technology, which allows up to 10 EX4200 Ethernet switches to be interconnected as a single logical device
, combined with line-rate 10 Gigabit Ethernet (GbE) performance on its chassis-based EX8200 line, reduces the number of interswitch links and the amount of equipment required in the data centre by up to half.
PFS, then, presents itself to Windows 95/98/NT/2000 as a logical device
with standard drive-letter access, even though PFS is not a physical device.
In addition, logical device
formats like count key data are foreign to open systems file systems, database systems, and device drivers.
Three general logical devices
form the explanatory account of psychological behavior.