SMC Networks SMC7904BRA - Manual (Page 54)

S
ETUP
W
IZARD
4-9
ISP use Bridging
Parameter Description
Management IP Address IP address of the device.
VPI/VCI
Data flows are broken up into fixed length cells, each of
which contains a Virtual Path Identifier (VPI) that
identifies the path between two nodes, and a Virtual
Circuit Identifier (VCI) that identifies the data channel
within that virtual path. Each virtual circuit maintains a
constant flow of cells between the two end points.
When there is no data to transmit, empty cells are sent.
When data needs to be transmitted, it is immediately
inserted into the cell flows.
Encapsulation Shows the packet encapsulation type.
Packet encapsulation specifies how to handle multiple
protocols at the ATM transport layer.
• VC-MUX: Point-to-Point Protocol over ATM
VirtualCircuit Multiplexer (null encapsulation) allows
only one protocol running per virtual circuit with less
overhead.
• LLC: Point-to-Point Protocol over ATM Logical
Link Control allows multiple protocols running over
one virtual circuit (using slightly more overhead).