Dell PowerEdge M420 8/4 Gbps FC SAN Module Administrator's Guide - Page 18

2 Port mapping Port mapping The FC SAN Module uses port-mapped pre-provisioned routes to direct traffic from the blade server (HBAs) to the fabric. When you first turn on the module, by default, the internal ports (F_Ports) are mapped to a set of predefined external ports (N_Ports). For the default port mapping, see Table 3 on page 5. See t "Remapping ports" on page 5 if you want to change the default mapping. Figure 2 shows a mapping with eight internal ports (F_Ports) evenly mapped to four external ports (N_Ports). External ports connect to the same fabric through different Edge switches. Blade Servers Blade_1 Blade_2 Blade_3 FC SAN Module F_1 N_1 F_2 N_2 F_3 Edge Switch (Switch_A) F_A1 NPIV enabled F_A2 NPIV enabled Fabric Blade_4 F_4 Blade_5 F_5 Blade_6 F_6 N_3 N_4 Edge Switch (Switch_B) F_B1 NPIV enabled F_B2 NPIV enabled Blade_7 F_7 Blade_8 F_8 FIGURE 2 Example NPIV port mapping Table 2 provides a description of the port mapping in Figure 2. TABLE 2 Description of port mapping in preceding figure NPIV Switch Fabric F_Port N_Port Edge switch F_Port F_1, F_2 N_1 F_3, F_4 N_2 F_5, F_6 N_3 F_7, F_8 N_4 Switch_A Switch_A Switch_B Switch_B F_A1 F_A2 F_B1 F_B2 4 Dell 8/4Gbps FC SAN Module Administrator's Guide 53-1001345-01