HP StorageWorks 8/80 HP StorageWorks Fabric OS 6.2 administrator guide (5697-0 - Page 179

D2 H1 Switch 1 D1 Fabric 128 Switch 2 Switch 3 Switch 4 Fabric 1 Fabric 15 Fabric 8 Figure 13 Logical Switches in a single chassis belonging to separate fabrics If you want to allow device sharing across fabrics in a Virtual Fabrics environment, see "FC-FC routing and Virtual Fabrics" on page 401. Logical Fabric A Logical Fabric is a fabric that contains at least one Logical Switch. The four fabrics shown in Figure 12 on page 176 and Figure 13 are Logical Fabrics because they each have at least one Logical Switch in them. You can connect Logical Switches to non-Virtual Fabric switches and to other Logical Switches. You can connect Logical Switches to non-Virtual Fabric switches using an ISL, as shown in Figure 12 on page 176. You can connect Logical Switches to other Logical Switches in two ways: • Using ISLs • Using base switches and shared ISLs Logical Fabric and ISLs Figure 14 shows two physical chassis divided into Logical Switches. In this figure, ISLs are used to connect the Logical Switches with fabric ID 1 and the Logical Switches with fabric ID 15. The Logical Switches with fabric ID 8 are each connected to a non-Virtual Fabrics switch. The two Logical Switches and the non-Virtual Fabrics switch are all in the same fabric, with fabric ID 8. Physical chassis 1 Logical switch 1 P1 (Default logical switch) Fabric ID 128 Logical switch 2 P2 Fabric ID 1 P3 P4 Logical switch 3 Fabric ID 15 P5 Physical chassis 2 P1 Logical switch 5 (Default logical switch) Fabric ID 128 P2 Logical switch 6 P3 Fabric ID 1 P4 P5 P7 Logical switch 7 P6 Fabric ID 15 Logical switch 4 P6 Fabric ID 8 P8 Logical switch 8 P9 Fabric ID 8 Switch Figure 14 Logical Switches connected to other Logical Switches through physical ISLs Figure 15 shows a logical representation of the configuration in Figure 14. Fabric OS 6.2 administrator guide 177