Snmp – IBM AA-RWF3A-TE User Manual

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public loop

An arbitrated loop that includes a participating FL_Port and

may contain both public and private NL_Ports. See also

arbitrated loop

.

public NL_Port

An NL_Port that logs in to the fabric, can function within a

public or private loop, and can communicate with private or

public NL_Ports. See also

private loop

.

quad

A group of four adjacent ports that share a common pool of

frame buffers.

R_A_TOV

Resource allocation time-out value. The maximum time a frame

can be delayed in the fabric and still be delivered.

route

With respect to a fabric, the communication path between two

switches. May also apply to the specific path taken by an

individual frame from source to destination.

routing

The assignment of frames to specific switch ports according to

frame destination.

RR_TOV

Resource recovery time-out value. The minimum time a target

device in a loop waits after a LIP before logging out a SCSI

initiator.

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

switch

.

sequence

A group of related frames transmitted in the same direction

between two N_ports.

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

MIB

,

trap (SNMP)

.

SNS

Simple Name Server. A switch service that stores names,

addresses, and attributes for up to 15 minutes, and provides

SAN Switch installation guide

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