GLOSSARY 53
hub | A device that regenerates LAN traffic so that the transmission distance |
| of that signal can be extended. Hubs are similar to repeaters, in that |
| they connect LANs of the same type; however they connect more LANs |
| than a repeater and are generally more sophisticated. |
IEEE | Institute of Electrical and Electronics Engineers. This American |
| organization was founded in 1963 and sets standards for computers |
| and communications. |
IEEE 802.1D | A standard that defines the behavior of bridges in an Ethernet network. |
IETF | Internet Engineering Task Force. An organization responsible for |
| providing engineering solutions for TCP/IP networks. In the network |
| management area, this group is responsible for the development of the |
| SNMP protocol. |
IP | Internet Protocol. IP is a layer 3 network protocol that is the standard |
| for sending data through a network. IP is part of the TCP/IP set of |
| protocols that describe the routing of packets to addressed devices. |
IPX | Internetwork Packet Exchange. IPX is a layer 3 and 4 network protocol |
| designed for networks that use Novell® Netware®. |
IP address | Internet Protocol address. A unique identifier for a device attached to a |
| network using TCP/IP. The address is written as four octets separated |
| with periods |
| optional subnet section and a host section. |
LAN | Local Area Network. A network of endstations (such as PCs, printers, |
| servers) and network devices (hubs and switches) that cover a relatively |
| small geographic area (usually not larger than a floor or building). LANs |
| are characterized by high transmission speeds over short distances (up |
| to 1000m). |
line speed | See baud. |
loop | An event that occurs when two network devices are connected by |
| more than one path, thereby causing packets to repeatedly cycle |
| around the network and not reach their destination. |
MAC | Media Access Control. A protocol specified by the IEEE for determining |
| which devices have access to a network at any one time. |