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PROPRIETARY AND CONFIDENTIAL DRAFT 28/Feb/03

Glossary
Chapter 6: General Procedures

Glossary

The glossary of terms used to describe the Information Systems Requirements
are as follows:

ARP—This is an Address Resolution Protocol. It allows one device to learn
the MAC (Media Access Controller) address of another device so it can send it
an Ethernet packet.

Devices keep an ARP table of other devices that they have recently sent
packets to, so they can look them up quickly. But, if a device is not in the ARP
table, a request must be sent out across the network. When a device needs to
send a packet to IP address 1.2.3.4, but does not know the MAC address, it
broadcasts an ARP request which asks all devices; “Is there anyone out there
that has IP address 1.2.3.4?” The device on the network with that IP address
responds with its MAC address. ARPs broadcasts consume network
bandwidth.

1
AUTOIP™ —A method for a device to assign itself an IP address in an un-
managed network.

Device Name—The word Master plus its unique serial number. The serial
number is found on the back of the Master Alarm Module.

Dynamic Host Configuration Protocol (DHCP)—A protocol used by a
server to assign IP addresses to devices and computers.

Domain Name Server (DNS)—A device that has a list of device names
matched to IP addresses. Browsers use this resource to locate the IP address of
a named device. NetBios name service provides this function on a local
network.

Ethernet—A standard high-speed network medium that the network
information travels on. Specified by the Institute of Electrical and Electronics
Engineering (IEEE) 802.3. Typically 10 megabits per second (10BaseT).

Ethernet Hub—A device that connects many Ethernet devices together. All
devices on the hub receive messages sent from all of the other connected 6
devices.

1. AUTOIP™ is a trademark of Net to Net Technologies, Inc.

MedPlus TotalAlert™ Alarm Network Operation and Maintenance Manual (man291ra) Page 6 - 3