2OPERATION GLOSSARY
of the ISO reference model. Bridges connect LANs with different
hardware and different protocols. An example is a device that connects
an Ethernet network to an FDDI network. This bridge allows the two
networks to send signals to each other. The Switch 2200 can operate as a
translation/transparent 802.1d bridge. See also Spanning Tree Protocol.
broadcast packetA single packet that is sent to all stations in a network. See also multicast
packet.
broadcast/multicastThe network congestion that results when many stations, responding to a
stormtransmission by one station, transmit a large number of frames. This
condition can overstress a network and cause end-stations to hang or fail.
cell relaySee ATM.
clientA single-user computer that requests application or network services from a
server.
client-serverA distributed system model of computing that brings computing power to
the desktop, where users (Oclients�) access resources from servers.
community stringA character string included in each SNMP protocol message sent between
external management applications, such as between Transcend¨ Enterprise
Manager and the Switch 2200 system.
DASDual attachment station. A station directly attached to FDDIOs dual token
rings. A DAS has four Ţber attachments, one receive and one transmit Ţber
for each ring. Rather than an individual user workstation, a DAS is most
likely to be the device controlling LAN operation, such as an FDDI
concentrator, bridge, router, server, minicomputer, or mainframe. A DAS can
be either single-MAC or dual-MAC and contains one A-B port pair.
data-link layerThe second layer of the OSI model, which contains the Media Access
Control (MAC) sublayer and the Logical Link Control (LLC) sublayer. The
data-link layer deŢnes how data is divided into packets and transmitted
within a network. See also ISO, OSI.
dual homingA method of cabling concentrators and stations that allows an alternate
path to the FDDI network. Dual homing creates a more stable ring of
concentrators. |
ACEC
OTHERS
