3Com 155 PCI manual Node

4GLOSSARY

MIB

Management Information Base. A definition of management items for some network component that can be accessed by network management software. A MIB includes the names of objects it contains and the type of information retained.

Node

A device connected to the network media, usually with an adapter card.

Point-to-point

Transmission of data between two nodes on a network where one node is the sender and the other node is the receiver.

PVC

Permanent Virtual Circuit. An ATM mode in which the communication circuit between two nodes on a network is manually set up and torn down.

SAR

Segmentation and Reassembly. A procedure that breaks down and reassembles variable-length packets from legacy LAN (Ethernet and token ring) applications. The SAR chip set receives protocol data units (PDUs) from the convergence sublayer and divides them into small segments, typically

44 bytes long. Two header bytes and two trailer bytes are added to these segments. The resulting segment is a 48-byte PDU that fits into the payload of an ATM cell.

SDH

Synchronous Digital Hierarchy. A European body of standards that defines all aspects of transmitting and managing digital traffic over optical fiber.

Signaling

An ATM connection procedure that implements explicit routes through switches to establish a communication link with another station on the network.