HP StorageWorks 2/140 FW 08.01.00 McDATA Products in a SAN Environment Plannin - Page 91
Private device, However, device D
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Planning Considerations for Fibre Channel Topologies 3 • Private device - A loop device that cannot transmit an FLOGI command to the switch nor communicate with fabric-attached devices is a private device. As shown in Figure 3-4, device D2 is a private loop device connected to a Sphereon 4500 Fabric Switch and cannot communicate with any fabric-attached device. However, device D2 can communicate with switch-attached server S2 (using private addressing mode). Public and private devices are partitioned into two separate address spaces defined in the Fibre Channel address. Private address spaces are isolated from a switched fabric. The switch does not support any other form of Fibre Channel address conversion (spoofing) that would allow private device-to-fabric device communication. NOTE: A private device can connect to the switch (loop) while a public device is connected and using an E_Port to communicate with a switched fabric. Figure 3-4 Private Device Connectivity Planning Considerations for Fibre Channel Topologies 3-7
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