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Departmental Switch Model DS-16B2 Fabric OS Procedures Manual
Glossary
SNMP Simple Network Management Protocol. An internet management
protocol that uses either IP for network level functions and UDP for
transport level functions, or TCP/IP for both. Can be made available
over other protocols, such as UDP/IP, because it does not rely on the
underlying communication protocols. See also Community (SNMP).
SNS Simple Name Server; a switch service that stores names, addresses,
and attributes for up to 15 minutes, and provides them as required to
other devices in the fabric. SNS is defined by Fibre Channel standards
and exists at a well known address. May also be referred to as
directory service. See also FS.
Switch Hardware that routes frames according to Fibre Channel protocol and
is controlled by software.
Switch Name The arbitrary name assigned to a switch.
Switch Port A port on a switch. Switch ports can be E_Ports, F_Ports, or FL_Ports.
SWL Short Wavelength; a type of fiber optic cabling that is based on
850mm lasers and supports 1.0625 Gbps link speeds. May also refer
to the type of GBIC or SFP. See also LWL.
T
Target A storage device on a Fibre Channel network. See also Initiator.
Tenancy The time from when a port wins arbitration in a loop until the same
port returns to the monitoring state. Also referred to as loop tenancy.
Throughput The rate of data flow achieved within a cable, link, or system. Usually
measured in bps (bits per second). See also Bandwidth.
Topology As applies to Fibre Channel, the configuration of the Fibre Channel
network and the resulting communication paths allowed. There are
three possible topologies:
• Point-to-point — A direct link between two communication
ports.
• Switched fabric — Multiple N_Ports linked to a switch by
F_Ports.
• Arbitrated loop — Multiple NL_Ports connected in a loop.