3Com 3CBLSF26PWRH User Manual page 135

Item
LAN
Layer 2
MAC
MAC Address
Network
Ping
Protocol
RJ-45
Server
SFP
Subnet Address
Subnet Mask
Subnets
Switch
TCP/IP
Local Area Network. A network of end stations (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 1000 meters).
Data Link layer in the ISO 7-Layer Data Communications Protocol. This
is related directly to the hardware interface for the network devices and
passes on traffic based on MAC addresses.
Media Access Control. A protocol specified by the IEEE for determining
which devices have access to a network at any one time.
Media Access Control Address. Also called the hardware, physical or
Ethernet address. A layer 2 address associated with a particular network
device. Most devices that connect to a LAN have a MAC address
assigned to them as they are used to identify other devices in a network.
MAC addresses are 6 bytes long.
A Network is a collection of computers and other computer equipment
that are connected for the purpose of exchanging information or sharing
resources. Networks vary in size, some are within a single room, others
span continents.
Packet Internet Groper. An Internet utility used to determine whether a
particular IP address is online. It is used to test and debug a network by
sending out a packet and waiting for a response.
A set of rules for communication between devices on a network. The
rules dictate format, timing, sequencing and error control.
A standard connector used to connect Ethernet networks. The "RJ"
stands for "registered jack."
A computer in a network that is shared by multiple end stations. Servers
provide end stations with access to shared network services such as
computer files and printer queues.
Small Form Factor Pluggable (SFP) Connectors are based on an open
standard that enables hot swapping of various types of fiber optic and
copper-based transceivers into the host equipment.
An extension of the IP addressing scheme that allows a site to use a
single IP network address for multiple physical networks.
A subnet mask, which may be a part of the TCP/IP information provided
by your ISP, is a set of four numbers configured like an IP address. It is
used to create IP address numbers used only within a particular network
(as opposed to valid IP address numbers recognized by the Internet,
which must assigned by InterNIC).
A network that is a component of a larger network.
A device that interconnects several LANs to form a single logical LAN
that comprises of several LAN segments. Switches are similar to
bridges, in that they connect LANs of a different type; however they
connect more LANs than a bridge and are generally more sophisticated.
Transmission Control Protocol/Internet Protocol. This is the name for
two of the most well-known protocols developed for the interconnection
of networks. Originally a UNIX standard, TCP/IP is now supported on
almost all platforms, and is the protocol of the Internet.
9-3
Description