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Figure 24 – Brocade Fabric OS Administrators Guide (Supporting Fabric OS v7.3.0) User Manual

Page 275

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FID 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 FID 8.

FIGURE 24 Logical switches connected to other logical switches through physical ISLs

Figure 25

shows a logical representation of the configuration in

Figure 24

.

FIGURE 25 Logical switches connected to form logical fabrics

The ISLs between the logical switches are dedicated ISLs because they carry traffic only for a single
logical fabric. In

Figure 24

, Fabric 128 has two switches (the default logical switches), but they cannot

communicate with each other because they have no ISLs between them and they cannot use the ISLs
between the other logical switches.

NOTE
Only logical switches with the same FID can form a fabric. If you connect two logical switches with
different FIDs, the link between the switches segments.

Managing Virtual Fabrics

Fabric OS Administrators Guide

275

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