Brocade Fabric OS Administrators Guide (Supporting Fabric OS v7.3.0) - Manual (Page 546)

In addition to ensuring that the backbone fabric IDs are the same within the same backbone, you must
make sure that when two different backbones are connected to the same edge fabric, the backbone
fabric IDs are different, but the edge fabric ID should be the same. Configuration of two backbones
with the same backbone fabric ID that are connected to the same edge is invalid. In this configuration,
a RASLog message displays a warning about fabric ID overlap. When two backbone fabrics are not
connected to the same edge, they can have the same backbone fabric ID.
ATTENTION
In a multi-switch backbone fabric, modification of the FID within the backbone fabric will cause
disruption to local traffic.
Assigning backbone fabric IDs
1. Log in to the switch or backbone.
2. Enter the switchDisable command if EX_Ports are online.
3. Enter the fosConfig --disable fcr command to disable the FC-FC routing service.
The default state for the FC router is disabled.
4. Enter the fcrConfigure --bbfid command. At the prompt, enter the fabric ID, or press Enter to keep
the current fabric ID, which is displayed in brackets.
5. Verify the backbone fabric ID is different from that set for edge fabrics.
Multiple FC routers attached to the same backbone fabric must have the same backbone fabric ID.
6. Enter the fosConfig --enable fcr command.
7. Enter the switchEnable command.
switch:admin> switchdisable
switch:admin> fosconfig --disable fcr
FC Router service is disabled
switch:admin> fcrconfigure --bbfid
FC Router parameter set. to skip a parameter
Please make sure new Backbone Fabric ID does not conflict with any configured EX-
Port's Fabric ID
Backbone fabric ID: (1-128)[128]
switch:admin> fosconfig --enable fcr
FC Router service is enabled
switch:admin> switchenable
Assigning alias names to fabric IDs
You can assign an alias name to each fabric ID for easier configuration and manageability.
The alias name is a user friendly name that you can use instead of a fabric ID (FID) in the
portcfgexport and portcfgvexport commands.
There is no relation between the FID alias name and the fabric name, which you configure with the
fabricname command.
Assigning backbone fabric IDs
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