HP StorageWorks MSA 2/8 HP StorageWorks QuickLoop Fabric Assist V3.1.x User Gu - Page 16

Using QuickLoop QuickLoop Overview QuickLoop can be enabled or disabled on either the entire switch or on individual ports. When QuickLoop is disabled on a 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. QuickLoop can be enabled on either single switch or dual switch configurations, known as "QuickLoop partners." QuickLoop can include all or some of the ports on a switch or 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). Upon request, this can be set as the manufacturing default. 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 enabled for QuickLoop on an individual basis. The port 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 entering the qlportdisable and qlportenable. Note: These modes cannot be configured by Simple Network Management Protocol (SNMP). 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. 16 QuickLoop Fabric Assist Version 3.1.x User Guide