Dell PowerVault 51F Manuale d'uso - Pagina 41

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The following list defines or identifies

technical terms, abbreviations, and acro-

nyms used in Dell™ user documents.

A fabric software facility that supports

multicast group management.

The FC Arbitrated Loop (FC-AL) is a stan-

dard defined on top of the FC-PH

standard. It defines the arbitration on a

loop where several FC nodes share a com-

mon medium.

In Class 2 service, the fabric and destina-

tion N_Port provide connectionless

service with notification of delivery or non-

delivery between the two N_Ports.

Class 3 service provides connectionless

service without notification of delivery be-

tween N_Ports. The transmission and

routing of Class 3 frames is the same as

for Class 2 frames.

A class of service used for interswitch

control traffic. It provides connectionless

service with notification of delivery or non-

delivery between two E_Ports.

An SNMP community is a relationship be-

tween an SNMP agent and a set of SNMP

managers that defines authentication, ac-

cess control, and proxy characteristics.

Credit, applied to a switch, is a numeric

value that represents the maximum num-

ber of receive buffers provided by an

F_Port or FL_Port to its attached N_Port

or NL_Port respectively such that the

N_Port or NL_Port may transmit frames

without overrunning the F_Port or

NL_Port.

The domain number uniquely identifies

the switch in a fabric. This switch domain

ID is normally automatically assigned by

the switch and may be any value between

0 and 31. This number may also be as-

signed manually.

E_D_TOV (Error-Detect Time-Out Value)

defines the time the switch waits for an

expected response before declaring an er-

ror condition. The error detect time out

value is adjustable in 1 ms increments

from two seconds up to 10 seconds.

A port is designated an E_Port when it is

used as an interswitch expansion port to

connect to the E_Port of another switch

to build a larger switch fabric.

The name applied to a network resulting

from the interconnection of switches and

devices by interswitch links (ISLs). A fab-

ric is an active, intelligent, nonshared

interconnect scheme for nodes.

Glossary