Brocade Fabric OS Administrators Guide (Supporting Fabric OS v7.3.0) - Manual (Page 279)

The NAA=5 syntax uses the following variables:
• nnnnnn is the Brocade Organizationally Unique Identifier (OUI).
• zzzzzz is the logical fabric serial number.
• xxx is the logical port number, in the range 0 through FFF.
Logical fabric formation
Fabric formation is not based on connectivity, but on the FIDs of the logical switches. The basic order of
fabric formation is as follows:
1. Base fabric forms.
2. Logical fabrics form when the base fabric is stable.
3. Traffic is initiated between the logical switches.
4. Devices begin recognizing one another.
Account management and Virtual Fabrics
When user accounts are created, they are assigned a list of logical fabrics to which they can log in and
a home logical fabric (home FID). When you connect to a physical chassis, the home FID defines the
logical switch to which you are logged in by default. You can change to a different logical switch context,
as described in
Changing the context to a different logical fabric on page 294.
When you are logged in to a logical switch, the system prompt changes to display the FID of that switch.
The following are example prompts for when you are logged in to the default logical switch (FID = 128)
and a user-defined logical switch (FID = 15):
switch:FID128:admin>
switch:FID15:admin>
Refer to Managing User Accounts on page 133 for information about creating user accounts and
assigning FIDs to user accounts.
Setting up IP addresses for a logical switch
Each physical chassis has one common IP address that is shared by all of the logical switches in the
chassis. You can set up individual IPv4 addresses for each logical switch.
IPv4 addresses assigned to individual logical switches are assigned to IP over Fibre Channel (IPFC)
network interfaces. In Virtual Fabrics environments, a single chassis can be assigned to multiple fabrics,
each of which is logically distinct and separate from one another. Each IPFC point of connection to a
given chassis needs a separate IPv4 address and prefix to be accessible to a management host.
For a management host to access logical switches, the host bus adapter (HBA) must be able to connect
with the common, shared IP address and the individual IPv4 addresses configured for each logical
switch.
NOTE
IPv6 is not supported when setting the IPFC interface for Virtual Fabrics.
Logical fabric formation
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