RSCN

Registered state change notification. A switch function that allows notification of

 

fabric changes to be sent from the switch to the specified nodes.

SAN

Storage area network. A network of systems and storage devices that

 

communicate using FC protocols.

SDRAM

Synchronous dynamic random access memory. The main memory for a switch.

 

See also ???.

sequence

A group of related frames transmitted in the same direction between two

 

N_ports.

service rate

The rate at which an entity can service requests.

single mode

The fiber optic cabling standard that corresponds to distances up to 10 km

 

between devices.

SNMP

Simple Network Management Protocol. An Internet management protocol that

 

uses either IP for network-level functions and UDP for transport functions, or

 

TCP/IP for both. SNMP can be made available over other protocols (such as

 

UDP/IP) because it does not rely on the underlying communication protocols.

 

See also ???, ???.

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. May also be referred to as a directory service.

switch

Hardware that routes frames according to FC protocol and is controlled by

 

software.

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 850 mm lasers

 

and supports link speeds up to 2 Gb/s. May also refer to the type of transceiver.

tenancy

The time span that begins when a port wins arbitration in a loop and ends when

 

the same port returns to the monitoring state. Also called loop tenancy.

throughput

The rate of data flow achieved within a cable, link, or system. Usually measured

 

in bits per second (b/s).

topology

With respect to FC, the configuration of the FC 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

transmission

A 10-bit character encoded according to the rules of the 8b/10b algorithm.

character

 

transmission word A group of transmission characters.

trap (SNMP)

The message sent by an SNMP agent to inform the SNMP management station

 

of a critical error. See also ???.

U_Port

Universal port. A switch port that can operate as a G_Port, E_Port, F_Port, or

 

FL_Port. A port is defined as a U_Port when it is not connected or has not yet

 

assumed a specific function in the fabric. See also ???, ???, ???.

well-known

With respect to FC, a logical address defined by the FC standards as assigned

address

to a specific function and stored on the switch.

58 Glossary

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HP 5697-7483 manual Rscn, San, Sdram, Snmp, Sns, Swl

5697-7483 specifications

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