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Cooper Bussmann 5073E-T Managed Ethernet Switch User Manual
103
Rev Version 1.1
Term
Definition
SNMP
Simple Network Management Protocol (SNMP) is an Internet-standard protocol for managing
devices on IP networks. Devices that typically support SNMP include routers, switches,
servers, workstations, printers, modem racks and so on. It is used mostly in network
management systems to monitor network-attached devices for conditions that warrant
administrative attention.
SNMP Trap
SNMP traps are notifications or messages sent by a networked device to a management
system. The messages are sent over the UDP protocol. The SNMP trap includes the
IP address of the sender, the generic ID, specific ID, OID and corresponding value.
SNTP
Simple Network Time Protocol (SNTP) is a less complex implementation of NTP, using the
same protocol, but without requiring the storage of state over extended periods of time. It
is used in some embedded devices and in applications where high accuracy timing is not
required.
Network Time Protocol (NTP) is a networking protocol for clock synchronization between
computer systems over packet-switched, variable-latency data networks.
STP
The Spanning Tree Protocol (STP) is a network protocol that ensures a loop-free topology
for any bridged Ethernet local area network. The basic function of STP is to prevent bridge
loops and the broadcast radiation that results from them. Spanning tree also allows a network
design to include spare (redundant) links to provide automatic backup paths if an active link
fails, without the danger of bridge loops, or the need for manual enabling/disabling of these
backup links.
Sub Network or
Subnet
Found in larger networks, these smaller networks are used to simplify addressing between
numerous computers. Subnets connect together through a router.
Switch
A type of hub that efficiently controls the way multiple devices use the same network so that
each can operate at optimal performance. A switch acts as a networks traffic cop. Rather
than transmitting all the packets it receives to all ports as a hub does, a switch transmits
packets to only the receiving port.
Telnet
Telnet is a network protocol used on the Internet or local area networks to provide a
bidirectional interactive text-oriented communication facility using a virtual terminal
connection.
TFTP
Trivial File Transfer Protocol (TFTP) is a file transfer protocol notable for its simplicity. It is
generally used for automated transfer of configuration or boot files between machines in a
local environment.
Transmit Power
The power (usually expressed in mW or dBm) at which the wireless device transmits.
UDP
The User Datagram Protocol (UDP) is one of the core members of the Internet protocol suite,
the set of network protocols used for the Internet. With UDP, computer applications can send
messages, in this case referred to as datagrams, to other hosts on an Internet Protocol (IP)
network without prior communications to set up special transmission channels or data paths.
UL
Underwriter Laboratories (UL) is one of several companies approved to perform safety testing
by the US federal agency Occupational Safety and Health Administration (OSHA).
UTC
Coordinated Universal Time (UTC) is the primary time standard by which the world regulates
clocks and time. It is one of several closely related successors to Greenwich Mean Time
(GMT). For most purposes, UTC is synonymous with GMT.
VLAN
Virtual LAN (VLAN) is a logical network grouping that limits the broadcast domain and allows
you to isolate network traffic so that members of the same VLAN only receive traffic from
each other. Creating a VLAN on a switch is the logical equivalent of reconnecting a group
of network devices to another Layer 2 switch. However, all the network devices are still
physically plugged into the same switch.
VPN
Virtual Private Network (VPN) is a type of technology designed to increase the security
of information transferred over the Internet. VPN can work with either wired or wireless
networks, as well as with dial-up connections over POTS. VPN creates a private encrypted
tunnel from the end user’s computer, through the local wireless network, through the Internet,
all the way to the corporate servers and database.
WAN
Wide Area Network. A communication system of connecting PCs and other computing
devices across a large local, regional, national or international geographic area. Also used to
distinguish between phone-based data networks and Wi-Fi. Phone networks are considered
WANs and Wi-Fi networks are considered Wireless Local Area Networks (WLANs).
