CRC

Cyclic redundancy check. A check for transmission errors that

 

is included in every data frame.

defined zone con-

The set of all zone objects defined in the fabric. May

figuration

include multiple zone configurations. See also zone, zone

 

configuration.

directory service

See SNS.

DLS

Dynamic load sharing. Dynamic distribution of traffic over

 

available paths. Allows for recomputing of routes when an

 

Fx_Port or E_Port changes status.

domain ID

Unique identifier used in routing frames for all switches in a

 

fabric. Usually assigned by the principal switch, but can be

 

assigned manually. The domain ID for an HP switch can be any

 

integer between 1 and 239. The default domain ID is usually 1.

E_D_TOV

Error-detect time-out value. The minimum time a target waits

 

for a sequence to complete before initiating recovery. Can

 

also be defined as the maximum time allowed for a round-trip

 

transmission before an error condition is declared.

E_Port

Expansion port. A type of switch port that can be connected

 

to an E_Port on another switch to create an ISL. See also ISL

 

trunking, U_Port.

EE_Credit

End-to-end credit. The number of receive buffers allocated by

 

a recipient port to an originating port. Used by Class 1 and

 

Class 2 services to manage the exchange of frames across the

 

fabric between source and destination.

enabled zone con-

The currently enabled configuration of zones. Only one

figuration

configuration can be enabled at a time. See also zone, zone

 

configuration.

end-to-end flow

A facility that governs flow of class 1 and class 2 frames

control

between N_Ports.

error

With respect to FC, a missing or corrupted frame, time-out, loss

 

of synchronization, or loss of signal (link error).

exchange

The highest-level FC mechanism used for communication

 

between N_Ports. Composed of one or more related

 

sequences; can work in one or both directions.

F_Port

Fabric port. A port that is able to transmit under fabric protocol

 

and interface over links. Can be used to connect an N_Port

 

to a switch. See also U_Port.

148Glossary

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IBM AA-RWF3A-TE manual Is included in every data frame, Directory service See SNS, FxPort or EPort changes status

AA-RWF3A-TE specifications

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