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 70
• Power down the unused slots by using the
poweroff xbar slot_number
command (see
or Powering Up a Fabric Module, on page 70
).
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)#
Shutting Down or Powering Up a Fabric Module
To shut down a fabric module, use either the
out-of-service xbar
command or the
poweroff xbar
command.
If you use the
poweroff xbar
command, the slot remains in that state until you use the
no poweroff
command.
If you use the
out-of-service xbar
command, the out-of-service state remains in effect until you do something
like remove the module and replace it with another module.
If you are going to limit the maximum number of fabric modules, make sure that powered-on fabric modules
are in the first
n
fabric module slots, where
n
is the new maximum number of fabric modules. For example,
if you are limiting the maximum number of fabric modules to 4, you must make sure that the four powered-on
fabric modules are in fabric slots 1 through 4.
If you are powering up more fabric modules than allowed by the current maximum number of fabric modules,
then make sure that the fabric modules that you are powering up are installed in the first
n
fabric slots (slots
1 through
n
), power-on those modules with the
no poweroff xbar
command, and change the maximum number
of fabric modules to
n
(see
Change the Amount of Power Reserved for Fabric Modules, on page 69
Note
Cisco Nexus 7710 Switch Site Preparation and Hardware Installation Guide
OL-30452-01.
70
Managing the Switch
Shutting Down or Powering Up a Fabric Module
