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Using QuickLoop
This chapter provides the following information:
•
Overview
•
Administering QuickLoop
•
QuickLoop Topology
•
QuickLoop Implementation
•
Sample Configurations
•
Error Handling
Note:
Overview
You can enable or disable QuickLoop for either the entire switch or for particular ports. When
QuickLoop is disabled on a particular port, that port returns to Fabric mode. When QuickLoop is
enabled on a port, the port is added to the same QuickLoop to which the switch belongs.
A QuickLoop is either "single switch," where all looplets are located on a single switch, or "dual
switch," where looplets are located on either of two partnered switches. However, any switch can
be in only one QuickLoop. A QuickLoop includes all or some of the ports on a switch or cascaded
switch pair, and can have several private hosts. Public hosts in an arbitrated loop mode are
considered private devices when connected to QuickLoop ports.
A switch can be configured to operate in any of the following modes:
•
QuickLoop mode
All ports on the switch, except for E_Ports or loopback ports, are enabled for QuickLoop and
participate in a logical Private Loop Direct Attach (PLDA). This mode can also be set by the
telnet command qlEnable.
•
Fabric mode
No ports are QuickLoop-enabled (none participate in any logical PLDAs), and all ports operate
as FC-FLA compliant devices. This mode can be set by the telnet command qlDisable.
•
Mixed mode
Each port is set to QuickLoop on an individual basis. The port's operating mode can be reset
during operation. Ports set to QuickLoop become looplets of the QuickLoop to which the
switch belongs. Particular ports can be taken in and out of the QuickLoop by the telnet
commands qlPortDisable and qlPortEnable.
Note:
QuickLoop User's Guide
on
page 2-1
on
page 2-2
on
page 2-2
on
page 2-3
on
page 2-5
on
page 2-11
For information about creating zones within a QuickLoop, see the Zoning User's Guide.
These modes cannot be configured by Simple Network Management Protocol (SNMP).
Chapter
2
2-1