D-Link DES-6500 Layer 3 Stackable Gigabit Ethernet Switch
Glossary
100BASE-FX
100Mbps Ethernet implementation over fiber.
100BASE-TX
100Mbps Ethernet implementation over Category 5 and Type 1 Twisted
Pair cabling.
10BASE-T
The IEEE 802.3 specification for Ethernet over Unshielded Twisted Pair
(UTP) cabling.
ageing
The automatic removal of dynamic entries from the Switch Database which have
timed-out and are no longer valid.
ATM
Asynchronous Transfer Mode. A connection oriented transmission protocol based
on fixed length cells (packets). ATM is designed to carry a complete range of user traffic,
including voice, data and video signals.
auto-negotiation
A feature on a port which allows it to advertise its capabilities for speed,
duplex and flow control. When connected to an end station that also supports auto-
negotiation, the link can self-detect its optimum operating setup.
backbone port A port which does not learn device addresses, and which receives all
frames with an unknown address. Backbone ports are normally used to connect the Switch
to the backbone of your network. Note that
backbone ports were formerly known as designated downlink ports.
backbone
The part of a network used as the primary path for transporting traffic
Backbone
The part of a network used as the primary path for transporting traffic between
network segments.
bandwidth
Information capacity, measured in bits per second, that a channel can transmit.
The bandwidth of Ethernet is 10Mbps, the bandwidth of Fast Ethernet is 100Mbps.
baud rate
The switching speed of a line. Also known as
line speed
.
between network segments.
BOOTP
The BOOTP protocol allows you to automatically map an IP address to a given
MAC address each time a device is started. In addition, the protocol can assign the subnet
mask and default gateway to a device.
bridge
A device that interconnects local or remote networks no matter what higher level
protocols are involved. Bridges form a single logical network, centralizing network
administration.
broadcast
A message sent to all destination devices on the network.
broadcast storm
Multiple simultaneous broadcasts that typically absorb available
network bandwidth and can cause network failure.
console port
The port on the Switch accepting a terminal or modem connector. It changes
the parallel arrangement of data within computers to the serial form used on data
transmission links. This port is most often used for dedicated local management.
CSMA/CD
Channel access method used by Ethernet and IEEE 802.3 standards in which
devices transmit only after finding the data channel clear for some period of time. When
two devices transmit simultaneously, a collision occurs and the colliding devices delay
their retransmissions for a random amount of time.
data center switching
The point of aggregation within a corporate network where a
switch provides high-performance access to server farms, a high-speed backbone
connection and a control point for network management and security.
edge port
Ethernet
A LAN specification developed jointly by Xerox, Intel and Digital Equipment
Corporation. Ethernet networks operate at 10Mbps using CSMA/CD to run over cabling.
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