HP StorageWorks MSA 2/8 HP StorageWorks QuickLoop Fabric Assist V3.1.x User Gu - Page 17

Address Translation

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Using QuickLoop Address Translation Address translation is transparent and requires no actions on the part of the user. It is achieved through hardware translative mode (also known as phantom mode), in which a device not physically located in a looplet is made addressable by a unique AL_PA in that looplet. There are two hardware translative modes available to a QuickLoop-enabled switch: ■ Standard translative mode-Allows public hosts to communicate with private target devices across the fabric. Standard translative mode is available as an integral part of Fabric OS, and does not require QuickLoop. ■ QuickLoop mode-Allows private hosts to communicate with private target devices across the fabric when configured in the same QuickLoop. Also allows private host to communicate with public target in the same QuickLoop. In mixed mode individual ports within a switch are set by configuration commands to one of the above two modes. The switch automatically determines and sets the appropriate mode, based on factory defaults and configurations currently in effect. QuickLoop Fabric Assist Version 3.1.x User Guide 17

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Using QuickLoop
17
QuickLoop Fabric Assist Version 3.1.x User Guide
Address Translation
Address translation is transparent and requires no actions on the part of the user. It
is achieved through hardware translative mode (also known as phantom mode), in
which a device not physically located in a looplet is made addressable by a unique
AL_PA in that looplet. There are two hardware translative modes available to a
QuickLoop-enabled switch:
■
Standard translative mode—
Allows public hosts to communicate with private
target devices across the fabric. Standard translative mode is available as an
integral part of Fabric OS, and does not require QuickLoop.
■
QuickLoop mode—
Allows private hosts to communicate with private target
devices across the fabric when configured in the same QuickLoop. Also
allows private host to communicate with public target in the same QuickLoop.
In
mixed mode
individual ports within a switch are set by configuration commands
to one of the above two modes.
The switch automatically determines and sets the appropriate mode, based on
factory defaults and configurations currently in effect.