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HP Surestore 6164 Switch User Manual

Page 85

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Switch Domain_ID

Unique identifier for a switch, used in routing frames. Usually automatically
assigned by the switch, but can be manually assigned by administrator.

Switch name

Arbitrary name assigned to switch by administrator. See also Switch
Domain_ID
.

Switch Port

Port on a switch. Switch ports can be E_Ports, F_Ports, or FL_Ports.

SWL

Short wavelength fiber-optic cable. Based on 850 nm lasers supporting
1.0625 Gbps link speeds. Connectors are color-coded black. See also LWL.

Target

Storage device that receives communications from a server or workstation
over 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. See also
Bandwidth.

Topology

As applies to fibre channel, the structure of the fibre channel network and
the resulting possible communication paths. There are three fibre channel
topologies: point-to-point, fabric, and arbitrated loop.

Transfer State

A state in which a port can establish circuits with multiple ports without
reentering the arbitration cycle for each circuit. This state can only be
accessed by an L_Port in the Open state.

Translative mode

Mode

in

which public devices

can

communicate

with private devices

across

fabric.Translates 8-bit to 24-bit addresses.

Transmission
Character

A 10-bit character encoded according to the rules of the 8b/10b algorithm.
See also 8b/10b encoding, Transmission word.

Transmission Word

Group of four transmission characters, totaling 40 bits. Two types: data words
and ordered sets. See also Data word, Ordered set, Transmission character.

Trap (SNMP)

Message sent by SNMP agent to inform SNMP management station of
critical error. See also SNMP.

Tunneling

Technique for enabling source and destination hosts to communicate when
on same type of network but connected by a different type of network.