Appendix D: Glossary
Appendix D: Glossary
The Glossary section defines the terms used in this User Manual
Term | Definition |
Ethernet | Local Area Network technology, originally developed by Xerox |
| Corporation, can link up to 1,024 nodes in a bus network. Ethernet |
| provides raw data transfer in a rate of 10 megabits/sec. with actual |
| throughputs in 2 to 3 megabits/sec. using a baseband |
| |
| sense multiple access collision detection (CSMA/CD) that prevents |
| network failures when two devices attempt to access the network at |
| the same time. LAN hardware manufacturers use Ethernet protocol; |
| their products may not be compatible. |
Gateway | A computer that attaches to a number of networks and routes packets |
| between them. The packets can be different protocols at the higher |
| levels. |
IP | Internet Protocol – The TCP/IP standard protocol defines the IP |
| datagram as the unit of information passed across a network. |
IP Address | Internet Protocol Address – A |
| participating in a TCP/IP network. The IP address consists of |
| network and host portions. It is assigned to an interconnection of a |
| host to a physical network. |
MAC | Medium Access Control - The network layer between the physical and |
| the data link layers. Specifically, the physical (hardware) address |
| exists in this layer. |
MIB | Management Information Base – The database, i.e. set of variables |
| maintained by a gateway running SNMP |
NMS | Network Management Station |
OID | Object Identifier – The variables defined in a MIB |
Router | A computer that manages traffic between different network segments |
| or different network topologies. It directs the destination IP address. |
| The network media can be different, but the |
| must be the same. |
SNMP | Simple Network Management Protocol – A standard protocol used to |
| monitor IP hosts, networks, and gateways. SNMP defines a set of |
| simple operations that can be performed on the OIDs of the MIBs |
| managed by the monitored Agents. It employs the UDP/IP transport |
| layer to move its object between the Agents and the NMS |
TCP/IP | Transmission Control Protocol/ Internet Protocol – A protocol suite |
| used by more than 15 million users with a UNIX association and |
| widely used to link computers of different kinds. |
WebCAM - user manual |
