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Overview of Fabric Module Support
This switch supports the following fabric modules:
•
Fabric 2 (N77-C7718-FAB-2)
Change the Amount of Power Reserved for Fabric Modules
By default, each switch reserves enough power for the maximum quantity of fabric modules that can be
installed in its chassis. If you have installed fewer than the maximum number of fabric modules and need to
free up unused reserve power for I/O modules, you can power down the unused slots and specify a smaller
maximum number of modules.
To specify a different maximum number of fabric modules for your system, use the hardware fabrics max
number command. To verify the status of the installed fabric modules, use the
show module xbar
command.
To verify the amount of reserved power, use the
show environment power
command.
Before You Begin
•
Make sure that the fabric modules that you are using are installed in slots 1 through
x
where
x
is the new
maximum number of fabric modules.
You do not have to fill all of the fabric slots, but the fabric modules that you install must be in slots 1
through
x
. For example, if you specify 4 as the new maximum number of fabric modules, you must make
sure that the fabric modules that you are using are in slots 1 through 4.
•
Make sure that each of the installed fabric modules is powered up by using the
no poweroff xbar
slot_number
command (see
Shutting Down or Powering Up a Fabric Module, on page 83
).
•
Power down the unused slots by using the
poweroff xbar slot_number
command (see
or Powering Up a Fabric Module, on page 83
).
Procedure
Step 1
Start the configuration mode by entering the
configure terminal
command.
Example:
switch#
configure terminal
switch(config)#
Step 2
Power off specific a specific fabric module by using the
hardware fabrics max quantity
command. Use a
digit between 1 and 6, inclusive.
Example:
switch(config)#
hardware fabrics max 4
switch(config)#
Cisco Nexus 7718 Switch Site Preparation and Hardware Installation Guide
82
OL-30453-01
Managing the Switch
Overview of Fabric Module Support