102
www.cooperbussmann.com/wirelessresources
Cooper Bussmann 5073E-T Managed Ethernet Switch User Manual
Rev Version 1.1
Term
Definition
IP
Internet protocol. A set of rules used to send and receive messages across local networks
and the Internet.
IP Address
A 32-bit number that identifies each sender or receiver of information that is sent across the
Internet. An IP address has two parts: an identifier of a particular network on the Internet
and an identifier of the particular device (which can be a server or a workstation) within that
network.
IPv4
Internet Protocol version 4 (IPv4) is the fourth version in the development of the Internet
Protocol (IP) and the first version of the protocol to be widely deployed. It is one of the core
protocols of standards-based internet working methods of the Internet, and routes most
traffic in the Internet.
LACP
Within the IEEE specification, the Link Aggregation Control Protocol (LACP) provides a
method to control the bundling of several physical ports together to form a single logical
channel. LACP allows a network device to negotiate an automatic bundling of links by
sending LACP packets to the peer (directly connected device that also implements LACP).
LAN
Local Area Network. A system of connecting PCs and other devices within the same physical
proximity for sharing resources such as an Internet connections, printers, files and drives.
LED
A light-emitting diode (LED) is a semiconductor light source. LEDs are used as indicator
lamps in many devices.
LLDP
The Link Layer Discovery Protocol (LLDP) is a vendor-neutral link layer protocol in the
Internet Protocol Suite used by network devices for advertising their identity, capabilities, and
neighbors on an IEEE 802 local area network, principally wired Ethernet.
MAC Address
Media Access Control address. A unique code assigned to most forms of networking
hardware. The address is permanently assigned to the hardware. Limiting a wireless
network’s access to hardware, such as wireless cards, is a security feature employed by
closed wireless networks. However, an experienced hacker armed with the proper tools can
still figure out an authorized MAC address, masquerade as a legitimate address, and access
a closed network.
Every wireless 802.11 device has its own specific MAC address hard-coded into it. This
unique identifier can be used to provide security for wireless networks. When a network uses
a MAC table, only 802.11 radios that have had their MAC addresses added to that network’s
MAC table will be able to get onto the network.
MDI/MDIX
A Medium Dependent Interface (MDI) describes the interface (both physical and electrical)
in a computer network from a physical layer implementation to the physical medium used
to carry the transmission. Ethernet over twisted pair also defines a medium dependent
interface crossover (MDIX) interface. Auto-MDIX ports on newer network interfaces detect
if the connection would require a crossover, and automatically chooses the MDI or MDIX
configuration to properly match the other end of the link.
PPP
Point-to-Point
The Point-to-Point Protocol (PPP) is a data link protocol commonly used in establishing a
direct connection between two networking nodes. It can provide connection authentication,
transmission encryption (using ECP, RFC 1968), and compression.
RJ-45
Standard connectors used in Ethernet networks. RJ-45 connectors are similar to standard
RJ-11 telephone connectors, except that RJ-45 connectors can have up to eight wires,
whereas telephone connectors have four wires.
Router
A device that forwards data from one WLAN or wired local area network to another.
RSTP/STP
In 2001, the IEEE introduced Rapid Spanning Tree Protocol (RSTP) as 802.1w. RSTP
provides significantly faster spanning tree convergence after a topology change, introducing
new convergence behaviors and bridge port roles to do this. RSTP was designed to be
backwards-compatible with standard STP.
RX
Receive.
Server
A computer that provides its resources to other computers and devices on a network. These
include print servers, Internet servers and data servers. A server can also be combined with a
hub or router.
