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APPENDIX F Glossary
AL_PA or
Arbitrated Loop
Physical Address
A one-byte value used to identify a port in an Arbitrated
Loop topology. The value of the AL_PA corresponds to bits
7:0 of the 24-bit Native Address Identifier.
Arbitrated Loop A Fibre Channel topology structured as a loop and
requiring a port to successfully arbitrate prior to
establishing a circuit to send and/or receive frames.
Arbitration The process of selecting one respondent from a group
requesting service at the same time.
Activation (in
WWN Zoning)
The user-initiated process by which the Managing Switch
activates the selected Zone Set on itself, then attempts to
force the selected Zone Set onto other switches (the
Managed Switches) in the fabric for enforcement.
Close (CLS) An Arbitrated Loop protocol used to terminate a loop
circuit.
Copper Cable Cables used to connect storage modules and host-bus
adapters with copper interfaces to copper transceivers. Best
suited for intra-cabinet. Best cable types include twin-axial
and equalized. Intra-cabinet copper cables should not
exceed 13 meters.
Current Fill
Word
The fill word that the Loop Port State Machine uses when a
fill word is to be transmitted.
De-activation (in
WWN Zoning)
The user-initiated process by which the Managing Switch
de-activates the currently active Zone Set on itself, then
attempts to de-activate the currently active Zone Set on
other switches (the Managed Switches) in the fabric for
enforcement, with the result that WWN zoning
enforcement is no longer in effect in the fabric.
Default Zone
State
(called “Default
Zone” in the
Web Manager)
Governs communicability of devices in the fabric when no
Zone Set is enforced. While “nonBlocking” allows all
devices in the fabric to see all other devices in the fabric,
“Blocking” does not allow any device to see any other
device. This setting has no effect when a Zone Set is
enforced. Default value: “nonBlocking.”
Duplex Cable Two fiber cables suitable for duplex transmission.
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