HP StorageWorks 64 FW 05.01.00 and SW 07.01.00 HP StorageWorks SAN High Availa - Page 65
Public Versus Private Loops, Public loop connectivity, Public loop, Private loop
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Planning Considerations for Fibre Channel Topologies Public Versus Private Loops Arbitrated loop switches support operation of public and private loops as follows: ■ Public loop - A public loop is connected to a switched fabric (through the switch B_Port) and the switch has an active embedded FL_Port that is user transparent. All devices attached to the loop can communicate with each other, and public devices attached to the loop can communicate with fabric-attached devices. FL_Port operation is not affected by the switch operating mode (shared or switched). Public loop connectivity is illustrated in Figure 25. Figure 25: Public loop connectivity ■ Private loop - A private loop is not connected to a switched fabric and the switch's embedded E_Port and FL_Port are inactive. All devices attached to the loop can only communicate with each other. Private loop connectivity is illustrated in Figure 26 on page 66. SAN High Availability Planning Guide 65