D-Link DGS-3024 - Switch Manual page 160

DGS-3024 Gigabit Ethernet Switch Manual
GBIC – Gigabit interface converter, a transceiver that converts serial electric signals to serial optical signals and vice versa.
In networking, a GBIC is used to interface a fiber optic system with an Ethernet system, such as Fiber Channel and Gigabit
Ethernet.
A GBIC allows designers to design one type of device that can be adapted for either optical or copper applications. GBICs
also are hot-swappable, which adds to the ease of upgrading electro-optical communication networks.
half-duplex – A system that allows packets to be transmitted and received, but not at the same time. Contrasts with full-
duplex.
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 full-stops (periods), and is made up of a network section, an optional subnet section and
a host section.
IPX – Internetwork Packet Exchange. A protocol allowing communication in a NetWare network.
LAN – Local Area Network. A network of connected computing resources (such as PCs, printers, servers) covering a
relatively small geographic area (usually not larger than a floor or building). Characterized by high data rates and low error
rates.
latency – The delay between the time a device receives a packet and the time the packet is forwarded out of the destination
port.
line speed – See baud rate.
main port – The port in a resilient link that carries data traffic in normal operating conditions.
MDI – Medium Dependent Interface. An Ethernet port connection where the transmitter of one device is connected to the
receiver of another device.
MDI-X – Medium Dependent Interface Cross-over. An Ethernet port connection where the internal transmit and receive lines
are crossed.
MIB – Management Information Base. Stores a device's management characteristics and parameters. MIBs are used by the
Simple Network Management Protocol (SNMP) to contain attributes of their managed systems. The Switch contains its own
internal MIB.
multicast – Single packets copied to a specific subset of network addresses. These addresses are specified in the destination-
address field of the packet.
protocol – A set of rules for communication between devices on a network. The rules dictate format, timing, sequencing and
error control.
resilient link – A pair of ports that can be configured so that one will take over data transmission should the other fail. See
also main port and standby port.
RJ-45 – Standard 8-wire connectors for IEEE 802.3 10BASE-T networks.
RMON – Remote Monitoring. Subset of SNMP MIB II that allows monitoring and management capabilities by addressing
up to ten different groups of information.
RPS – Redundant Power System. A device that provides a backup source of power when connected to the Switch.
server farm – A cluster of servers in a centralized location serving a large user population.
SLIP – Serial Line Internet Protocol. A protocol that allows IP to run over a serial line connection.
SNMP – Simple Network Management Protocol. A protocol originally designed to be used in managing TCP/IP Internets.
SNMP is presently implemented on a wide range of computers and networking equipment and may be used to manage many
aspects of network and end station operation.
Spanning Tree Protocol – (STP) A bridge-based system for providing fault tolerance on networks. STP works by allowing
you to implement parallel paths for network traffic, and ensure that redundant paths are disabled when the main paths are
operational and enabled if the main paths fail.
stack – A group of network devices that are integrated to form a single logical device.
standby port – The port in a resilient link that will take over data transmission if the main port in the link fails.
Switch – A device that filters, forwards and floods packets based on the packet's destination address. The Switch learns the
addresses associated with each Switch port and builds tables based on this information to be used for the Switching decision.
TCP/IP – A layered set of communications protocols providing Telnet terminal emulation, FTP file transfer, and other
services for communication among a wide range of computer equipment.
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