HP Surestore 64 FW 05.01.00 and SW 07.01.00 HP StorageWorks SAN High Availabil - Page 110
Port Numbering Versus Port Addressing, Director 2/64 port numbers and logical port
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Planning Considerations for Fibre Channel Topologies Port Numbering Versus Port Addressing Consideration must be given to the implications of port numbering for the FCP protocol versus logical port addressing for the FICON protocol. FCP configuration attributes are implemented through zoning. Zones are configured through the associated Product Manager application by authorizing or restricting access to name server information associated with device N_Ports that attach to director or switch F_Ports. Zones are configured by: ■ The 8-byte (64-digit) WWN assigned to the host bus adapter (HBA) or Fibre Channel interface installed in a device connected to the director or switch. ■ The domain identification (ID) and physical port number of the director or edge switch port to which a device is attached. FICON configuration attributes are implemented through logical port addressing. This concept is consistent with the address-centric nature of FICON, and allows ports to be swapped for maintenance operations without regenerating a host configuration. Logical port addresses are derived by converting the port number from numerical to hexadecimal format, and adding a hexadecimal 4 to the result. Figure 46 illustrates port numbering and logical port addressing for the Director 2/64. The figure shows: ■ Universal port module (UPM) card numbers at the top (numerical 0 through 15). ■ Numerical physical port numbers in blue (00 through 63). ■ Hexadecimal physical port numbers in red (00 through 3F). ■ Logical port addresses in bold (hexadecimal 04 through 43). Figure 46: Director 2/64 port numbers and logical port addresses 110 SAN High Availability Planning Guide