McDATA Sphereon 4500 Manuel d'utilisateur télécharger pdf (Page 191)

Glossary

g-3

Glossary

bit error rate A comparison of the number of bits received incorrectly by a device

to the total number of bits transmitted.

blocked port Devices communicating with the port are prevented from logging

into the switch or communicating with other devices attached to the

switch. A blocked port continuously transmits the offline sequence.

bridge Device that connects and passes packets between two network

segments that use the same communications protocol.

broadcast Send a transmission to all N_Ports on a fabric.

broadcast frames Data packet, also known as a broadcast packet, whose destination

address specifies all computers on a network. See also multicast.

buffer Storage area for data in transit. Buffers compensate for differences in

processing speeds between devices.

CHPID See channel path identifier.

call-home Product feature which enables the EFC Server to automatically dial

out to a support center and report system problems. The support

center server accepts calls from the EFC Server, logs reported events,

and can notify one or more support center representatives.

channel Point-to-point link that transports data from one point to the other.

channel path A single interface between a central processor and one or more

control units along which signals and data can be sent to perform I/O

requests.

channel path

identifier

In a channel subsystem, a value assigned to each installed channel

path of the system that uniquely identifies that path to the system.

class of Fibre Channel

service

Defines the level of connection dedication, acknowledgment, and

other characteristics of a connection.

Class F Fibre Channel

service

Used by switches to communicate across interswitch links (ISLs) to

configure, control, and coordinate a multiswitch fabric.

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McDATA Sphereon 4500 Manuel d'utilisateur Page 191