Administering Quickloop; Web Tools; Telnet Commands; Quickloop Topology - HP StorageWorks 8B - FC Entry Switch User Manual

2
Using QuickLoop
A switch has a default mode, which depends on the switch model. When powered up, all the ports
of the switch will be set to the default mode.

Administering QuickLoop

You can manage QuickLoops through telnet commands or through Web Tools.

Web Tools

You can view and modify the QuickLoop settings through the QuickLoop Admin tab on the Switch
Admin interface view available through Web Tools.

Telnet Commands

To use a QuickLoop telnet command, log into the relevant switch with administrative privileges,
enter the command along with any required operands, and press Enter.
For a description of all the telnet commands provided for managing QuickLoop, refer to the Fabric
OS Reference Guide.

QuickLoop Topology

QuickLoop topologies have the following characteristics:
•
A QuickLoop can include up to two switches and can support up to 126 AL_PA devices.
•
Each particular switch can only be included in one QuickLoop.
•
A QuickLoop can include either all of, or a subset of, the ports on a particular switch.
•
Multiple non-overlapping QuickLoops can exist in a fabric of multiple switches.
•
Switches with QuickLoops enabled can exist in the same fabric as non-QuickLoop enabled
switches.
•
A device attached to a QuickLoop can communicate with all other devices attached to the same
QuickLoop.
•
A private device in a QuickLoop can only communicate with devices in the same QuickLoop.
Existing PLDA capable host drivers need no modification to perform I/O operations with
storage devices.
•
Public devices that are arbitrated loop capable are treated as private devices when connected to
QuickLoop ports (their fabric login, or "FLOGI," is not valid).
•
Legacy devices may be used in a QuickLoop and may be attached to a fabric and operate as if
in a PLDA environment.
•
QuickLoop functionality can be enabled or disabled for either the entire switch or for particular
ports. When QuickLoop is disabled on a particular port, that port returns to Fabric mode.
2-2 QuickLoop User's Guide