HP StorageWorks 8/8 Brocade Fabric OS Administrator's Guide v6.3.0 (53-1001336 - Page 242
Logical fabric overview
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10 Logical fabric overview You can also connect other switches to logical switches. In Figure 18, P6 is an E_Port that forms an ISL between Logical switch 4 and the non-Virtual Fabrics switch. Logical switch 4 is the only logical switch that can communicate with the non-Virtual Fabrics switch and D2, because the other logical switches are in different fabrics. Physical chassis Logical switch 1 P1 (Default logical switch) Fabric ID 128 H1 Logical switch 2 P2 Fabric ID 1 P3 D1 P4 Logical switch 3 Fabric ID 15 P5 D2 Logical switch 4 P6 ISL Fabric ID 8 Switch FIGURE 18 Logical switches connected to devices and non-Virtual Fabric switch Figure 19 shows a logical representation of the physical chassis and devices in Figure 18. As shown in Figure 19, the devices are isolated into separate fabrics. Switch 1 H1 D1 D2 Fabric 128 Switch 2 Switch 3 Switch 4 Fabric 1 Fabric 15 Fabric 8 FIGURE 19 Logical switches in a single chassis belong 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 496. Logical fabric overview A logical fabric is a fabric that contains at least one logical switch. The four fabrics shown in Figure 18 and Figure 19 are logical fabrics because they each have at least one logical switch. You can connect logical switches to non-Virtual Fabric switches and to other logical switches. You connect logical switches to non-Virtual Fabric switches using an ISL, as shown in Figure 18. 200 Fabric OS Administrator's Guide 53-1001336-01
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