- Displaying Information About the Installed Hardware Modules
- Displaying the Hardware Inventory for a Switch
- Displaying the Backplane and Serial Number Information
- Displaying Environmental Information for the Switch
- Displaying the Current State of a Module
- Displaying Temperatures for a Module
- Connecting to a Module
- Saving the Module Configuration
- Shutting Down or Starting Up a Module
- Purging a Nonfunctioning Module from the Running Configuration
- Displaying Power Usage Information
- Power Cycling a Module
- Rebooting a Switch
- Overview of Supervisor Modules
- Overview of I/O Module Support
- Overview of Fabric Modules
- Overview of Power Modes
- Overview of Fan Trays
Managing the Switch
- Displaying Information About the Installed Hardware Modules
- Displaying the Hardware Inventory for a Switch
- Displaying the Backplane and Serial Number Information
- Displaying Environmental Information for the Switch
- Displaying the Current State of a Module
- Displaying Temperatures for a Module
- Connecting to a Module
- Saving the Module Configuration
- Shutting Down or Starting Up a Module
- Purging a Nonfunctioning Module from the Running Configuration
- Displaying Power Usage Information
- Power Cycling a Module
- Rebooting a Switch
- Overview of Supervisor Modules
- Overview of I/O Module Support
- Overview of Fabric Modules
- Overview of Power Modes
- Overview of Fan Trays
Displaying Information About the Installed Hardware Modules
You can display information about the switch hardware and the hardware modules installed in the switch chassis by using the show hardware command.
switch# show hardware
Cisco Nexus Operating System (NX-OS) Software
TAC support: http://www.cisco.com/tac
Documents: http://www.cisco.com/en/US/products/ps9372/tsd_products_support_seri
es_home.html
Copyright (c) 2002-2013, Cisco Systems, Inc. All rights reserved.
The copyrights to certain works contained herein are owned by
other third parties and are used and distributed under license.
Some parts of this software are covered under the GNU Public
License. A copy of the license is available at
http://www.gnu.org/licenses/gpl.html.
Software
...
Hardware
cisco Nexus9000 C9504 (4 Slot) Chassis ("Supervisor Module")
Intel(R) Xeon(R) CPU E5-2403 with 16402560 kB of memory.
Processor Board ID SAL17184072
Device name: cloud-n9k
bootflash: 20971520 kB
Kernel uptime is 10 day(s), 19 hour(s), 55 minute(s), 55 second(s)
Last reset
Reason: Unknown
System version:
Service:
plugin
Core Plugin, Ethernet Plugin
--------------------------------
Switch hardware ID information
--------------------------------
Switch is booted up
Switch type is : Nexus9000 C9504 (4 Slot) Chassis
Model number is N9K-C9504
H/W version is 0.2010
Part Number is 73-15298-01
Part Revision is 1
Manufacture Date is Year 17 Week 25
Serial number is SAL17257PBN
CLEI code is 12345678
--------------------------------
Chassis has 8 Module slots and 6 Fabric modules slots
--------------------------------
Module1 empty
Module2 empty
Module3 empty
Module4 ok
Module type is : 36p 40G Ethernet Module
0 submodules are present
Model number is N9k-X9636PQ
H/W version is 0.1010
Part Number is
Part Revision is 1
Manufacture Date is Year 17 Week 25
Serial number is SAL17257AHD
CLEI code is
FM21 empty
FM22 ok
Module type is : Fabric Module
0 submodules are present
Model number is N9K-C9504-FM
H/W version is 0.1010
Part Number is 73-15287-01
Part Revision is 1
Manufacture Date is Year 17 Week 19
Serial number is SAL17194HVX
CLEI code is 12345678
FM23 empty
FM24 powered-dn
Module type is : Fabric Module
0 submodules are present
Model number is N9K-C9504-FM
H/W version is 0.1010
Part Number is 73-15287-01
Part Revision is 1
Manufacture Date is Year 17 Week 19
Serial number is SAL17194HRK
CLEI code is 12345678
FM25 empty
FM26 powered-dn
Module type is : Fabric Module
0 submodules are present
Model number is N9K-C9504-FM
H/W version is 0.1010
Part Number is 73-15287-01
Part Revision is 1
Manufacture Date is Year 17 Week 19
Serial number is SAL17194HSR
CLEI code is 12345678
Module27 ok
Module type is : Supervisor Module
0 submodules are present
Model number is N9K-SUP-A
H/W version is 0.3011
Part Number is 73-15279-03
Part Revision is 1
Manufacture Date is Year 17 Week 18
Serial number is SAL17184072
CLEI code is 12345678
Module28 ok
Module type is : Supervisor Module
0 submodules are present
Model number is N9K-SUP-A
H/W version is 1.0
Part Number is 73-15279-05
Part Revision is A0
Manufacture Date is Year 17 Week 39
Serial number is SAL1739DAUL
CLEI code is CMUCAE2BAA
Module29 ok
Module type is : System Controller
0 submodules are present
Model number is N9K-SC-A
H/W version is 0.2010
Part Number is 73-15294-02
Part Revision is 1
Manufacture Date is Year 17 Week 22
Serial number is SAL17225YFS
CLEI code is
Module30 ok
Module type is : System Controller
0 submodules are present
Model number is N9K-SC-A
H/W version is 0.2010
Part Number is 73-15294-02
Part Revision is 1
Manufacture Date is Year 17 Week 22
Serial number is SAL17225YG8
CLEI code is
---------------------------------------
Chassis has 8 PowerSupply Slots
---------------------------------------
PS1 ok
Power supply type is: 3000.00W 220v AC
Model number is N9K-PAC-3000W-B
H/W version is 0.2
Part Number is 341-0580-01
Part Revision is 02
Manufacture Date is Year 17 Week 22
Serial number is DTM1722000A
CLEI code is 12345678
PS2 absent
PS3 absent
PS4 fail/shutdown
Power supply type is: 3000.00W 220v AC
Model number is N9K-PAC-3000W
H/W version is 0.0
Part Number is
Part Revision is 1
Manufacture Date is Year 16 Week 46
Serial number is DTM164601XC
CLEI code is 12345678
----------------------------------
Chassis has 3 Fan slots
----------------------------------
Fan1 ok
Model number is N9K-C9504-FAN
H/W version is 0.5020
Part Number is 73-15288-05
Part Revision is 02
Manufacture Date is Year 17 Week 18
Serial number is SAL171843HG
CLEI code is 12345678
Fan2 ok
Model number is N9K-C9504-FAN
H/W version is 0.5020
Part Number is 73-15288-05
Part Revision is 02
Manufacture Date is Year 17 Week 18
Serial number is SAL171843K2
CLEI code is 12345678
Fan3 ok
Model number is N9K-C9504-FAN
H/W version is 0.5010
Part Number is 73-15288-05
Part Revision is 2
Manufacture Date is Year 17 Week 14
Serial number is SAL171421SY
CLEI code is
switch#
Displaying the Hardware Inventory for a Switch
You can display information about the field replaceable units (FRUs), including product IDs, serial numbers, and version IDs by using the show inventory command.
switch# show inventory NAME: "Chassis", DESCR: "Nexus9000 C9504 (4 Slot) Chassis " PID: N9K-C9504 , VID: V01 , SN: SAL17257PBN NAME: "Slot 4", DESCR: "36p 40G Ethernet Module" PID: N9k-X9636PQ , VID: , SN: SAL17257AHD NAME: "Slot 22", DESCR: "Fabric Module" PID: N9K-C9504-FM , VID: V01 , SN: SAL17194HVX NAME: "Slot 24", DESCR: "Fabric Module" PID: N9K-C9504-FM , VID: V01 , SN: SAL17194HRK NAME: "Slot 26", DESCR: "Fabric Module" PID: N9K-C9504-FM , VID: V01 , SN: SAL17194HSR NAME: "Slot 27", DESCR: "Supervisor Module" PID: N9K-SUP-A , VID: V01 , SN: SAL17184072 NAME: "Slot 28", DESCR: "Supervisor Module" PID: N9K-SUP-A , VID: V01 , SN: SAL1739DAUL NAME: "Slot 29", DESCR: "System Controller" PID: N9K-SC-A , VID: , SN: SAL17225YFS NAME: "Slot 30", DESCR: "System Controller" PID: N9K-SC-A , VID: , SN: SAL17225YG8 NAME: "Slot 33", DESCR: "Nexus9000 C9504 (4 Slot) Chassis Power Supply" PID: N9K-PAC-3000W-B , VID: V01 , SN: DTM1722000A NAME: "Slot 36", DESCR: "Nexus9000 C9504 (4 Slot) Chassis Power Supply" PID: N9K-PAC-3000W , VID: V01 , SN: DTM164601XC NAME: "Slot 41", DESCR: "Nexus9000 C9504 (4 Slot) Chassis Fan Module" PID: N9K-C9504-FAN , VID: V01 , SN: SAL171843HG NAME: "Slot 42", DESCR: "Nexus9000 C9504 (4 Slot) Chassis Fan Module" PID: N9K-C9504-FAN , VID: V01 , SN: SAL171843K2 NAME: "Slot 43", DESCR: "Nexus9000 C9504 (4 Slot) Chassis Fan Module" PID: N9K-C9504-FAN , VID: , SN: SAL171421SY switch#
Displaying the Backplane and Serial Number Information
You can display the backplane information, including the serial number for the switch by using the show sprom backplane command.
 Note | The following example shows the contents of the first instance of the backplane SPROM. |
switch# show sprom backplane 1 DISPLAY backplane sprom contents: Common block: Block Signature : 0xabab Block Version : 3 Block Length : 160 Block Checksum : 0x15a3 EEPROM Size : 65535 Block Count : 5 FRU Major Type : 0x6001 FRU Minor Type : 0x0 OEM String : Cisco Systems, Inc. Product Number : N9K-C9504 Serial Number : SAL17257PBN Part Number : 73-15298-01 Part Revision : 1 Mfg Deviation : 0 H/W Version : 0.2010 Mfg Bits : 0 Engineer Use : 0 snmpOID : 0.0.0.0.0.0.0.0 Power Consump : 0 RMA Code : 0-0-0-0 CLEI Code : 12345678 VID : V01 Chassis specific block: Block Signature : 0x6001 Block Version : 3 Block Length : 39 Block Checksum : 0x42c Feature Bits : 0x0 HW Changes Bits : 0x0 Stackmib OID : 0 MAC Addresses : 00-22-bd-f6-ce-70 Number of MACs : 128 OEM Enterprise : 9 OEM MIB Offset : 5 MAX Connector Power: 0 WWN software-module specific block: Block Signature : 0x6005 Block Version : 1 Block Length : 0 Block Checksum : 0x66 wwn usage bits: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 License software-module specific block: Block Signature : 0x6006 Block Version : 1 Block Length : 16 Block Checksum : 0x77 lic usage bits: 00 00 00 00 00 00 00 00 Second Serial number specific block: Block Signature : 0x6007 Block Version : 1 Block Length : 28 Block Checksum : 0x34a Serial Number : SAL17257PBN switch#
Displaying Environmental Information for the Switch
You can display all of the environment-related switch information by using the show environment command.
switch# show environment
Power Supply:
Voltage: 12 Volts
Power Actual Actual Total
Supply Model Output Input Capacity Status
(Watts ) (Watts ) (Watts )
------- ------------------- ---------- ---------- ---------- -------------
-
1 N9K-PAC-3000W-B 517 W 563 W 3000 W Ok
2 ------------ 0 W 0 W 0 W Absent
3 ------------ 0 W 0 W 0 W Absent
4 N9K-PAC-3000W 0 W 0 W 0 W Shutdown
Actual Power
Module Model Draw Allocated Status
(Watts ) (Watts )
------- ------------------- ----------- ----------- --------------
4 N9k-X9636PQ 178.00 W 399.60 W Powered-Up
22 N9K-C9504-FM 118.00 W 300.00 W Powered-Up
24 N9K-C9504-FM N/A 0.00 W Powered-Dn
26 N9K-C9504-FM N/A 0.00 W Powered-Dn
27 N9K-SUP-A 47.00 W 79.92 W Powered-Up
28 N9K-SUP-A 45.00 W 79.92 W Powered-Up
29 N9K-SC-A 12.00 W 60.00 W Powered-Up
30 N9K-SC-A 22.00 W 60.00 W Powered-Up
fan1 N9K-C9504-FAN 47 W 225.00 W Powered-Up
fan2 N9K-C9504-FAN 48 W 225.00 W Powered-Up
fan3 N9K-C9504-FAN 46 W 249.00 W Powered-Up
N/A - Per module power not available
Power Usage Summary:
--------------------
Power Supply redundancy mode (configured) Non-Redundant(combined
)
Power Supply redundancy mode (operational) Non-Redundant(combined
)
Total Power Capacity (based on configured mode) 3000.00 W
Total Power of all Inputs (cumulative) 3000.00 W
Total Power Output (actual draw) 517.00 W
Total Power Input (actual draw) 563.00 W
Total Power Allocated (budget) 1728.24 W
Total Power Available for additional modules 1271.76 W
Clock:
----------------------------------------------------------
Clock Model Hw Status
----------------------------------------------------------
Fan:
------------------------------------------------------
Fan Model Hw Status
------------------------------------------------------
Fan1(sys_fan1) N9K-C9504-FAN 0.5020 Ok
Fan2(sys_fan2) N9K-C9504-FAN 0.5020 Ok
Fan3(sys_fan3) N9K-C9504-FAN 0.5010 Ok
Fan_in_PS1 -- -- Ok
Fan_in_PS2 -- -- None
Fan_in_PS3 -- -- None
Fan_in_PS4 -- -- None
Fan Zone Speed: Zone 1: 0x0
Fan Air Filter : NotSupported
Temperature:
--------------------------------------------------------------------
Module Sensor MajorThresh MinorThres CurTemp Status
(Celsius) (Celsius) (Celsius)
--------------------------------------------------------------------
4 CPU 105 95 32 Ok
4 TD2-1 105 95 41 Ok
4 TD2-2 105 95 41 Ok
4 TD2-3 105 95 41 Ok
4 VRM-1 110 100 41 Ok
4 VRM-2 110 100 45 Ok
4 VRM-3 110 100 40 Ok
22 CPU 105 95 34 Ok
22 TD2-1 105 95 45 Ok
22 TD2-2 105 95 41 Ok
22 VRM-1 110 100 49 Ok
22 VRM-2 110 100 47 Ok
27 OUTLET 75 55 29 Ok
27 INLET 60 42 21 Ok
27 CPU 90 80 27 Ok
28 OUTLET 75 55 27 Ok
28 INLET 60 42 21 Ok
28 CPU 90 80 32 Ok
29 CPU 105 95 40 Ok
30 CPU 105 95 34 Ok
switch#
Displaying the Current State of a Module
You can display information about the modules installed in the switch chassis by using the show module command. This information includes module type, bootup status, MAC addresses, serial numbers, software versions, and hardware versions. You can use this command in the following ways to display information about all of the installed module or specific modules:
-
For information on all modules, use the show module command.
-
For information on a specific supervisor, system controller, I/O, or fabric module, use the show module slot_number command to specify a slot number.
Note
To determine the slots to specify, use the show inventory command.
This table provides descriptions of the module status displayed by the show module commands.
| I/O Module State | Description |
|---|---|
|
powered up |
The hardware has electrical power. When the hardware is powered up, the software begins booting. |
|
testing |
The module has established connection with the supervisor and the module is performing bootup diagnostics. |
|
initializing |
The diagnostics have completed successfully and the configuration is being downloaded. |
|
failure |
The switch detects a module failure upon initialization and automatically attempts to power-cycle the module three times. After the third attempt, the module powers down. |
|
ok |
The switch is ready to be configured. |
|
power-denied |
The switch detects insufficient power for an I/O module to power up. |
|
active |
This module is the active supervisor or system controller module and the switch is ready to be configured. |
|
HA-standby |
The HA switchover mechanism is enabled on the standby supervisor module. |
|
standby |
The switchover mechanism is enabled on the standby system controller module. |
Use the show module [slot_number] command to display information about all of the installed modules or for the module that you specify by its slot number.
This example shows how to display information about all the modules installed in a chassis.
switch# show module Mod Ports Module-Type Model Status --- ----- ----------------------------------- ------------------ ---------- 4 36 36p 40G Ethernet Module N9k-X9636PQ ok 22 0 Fabric Module N9K-C9504-FM ok 24 0 Fabric Module N9K-C9504-FM powered-dn 26 0 Fabric Module N9K-C9504-FM powered-dn 27 0 Supervisor Module N9K-SUP-A active * 28 0 Supervisor Module N9K-SUP-A ha-standby 29 0 System Controller N9K-SC-A active 30 0 System Controller N9K-SC-A standby Mod Power-Status Reason --- ------------ --------------------------- 24 powered-dn Configured Power down 26 powered-dn Configured Power down Mod Sw Hw --- -------------- ------ 4 6.1(4.11) 0.1010 22 6.1(4.11) 0.1010 27 6.1(4.11) 0.3011 28 6.1(4.11) 1.0 29 6.1(4.11) 0.2010 30 6.1(4.11) 0.2010 Mod MAC-Address(es) Serial-Num --- -------------------------------------- ---------- 4 00-22-bd-f8-2a-83 to 00-22-bd-f8-2a-b6 SAL17257AHD 22 00-00-00-00-00-00 to 00-00-00-00-00-00 SAL17194HVX 24 00-00-00-00-00-00 to 00-00-00-00-00-00 SAL17194HRK 26 00-00-00-00-00-00 to 00-00-00-00-00-00 SAL17194HSR 27 00-22-bd-f6-9d-58 to 00-22-bd-f6-9d-69 SAL17184072 28 00-22-bd-fc-04-b0 to 00-22-bd-fc-04-c1 SAL1739DAUL 29 00-00-00-00-00-00 to 00-00-00-00-00-00 SAL17225YFS 30 00-00-00-00-00-00 to 00-00-00-00-00-00 SAL17225YG8 * this terminal session switch#
Note | This example shows how to display information about a module in a specific slot (slot 4) of the chassis. |
switch# show module 4 Mod Ports Module-Type Model Status --- ----- ----------------------------------- ------------------ ---------- 4 36 36p 40G Ethernet Module N9k-X9636PQ ok Mod Sw Hw --- -------------- ------ 4 6.1(4.11) 0.1010 Mod MAC-Address(es) Serial-Num --- -------------------------------------- ---------- 4 00-22-bd-f8-2a-83 to 00-22-bd-f8-2a-b6 SAL17257AHD switch#
Displaying Temperatures for a Module
You can display temperature readings for module temperature sensors by using the show environment temperature command. Each system controller, supervisor, I/O, and fabric module has temperature sensors with two thresholds:
-
Minor temperature threshold—When a minor threshold is exceeded, a minor alarm occurs and the following actions occur for all four sensors:
-
Major temperature threshold—When a major threshold is exceeded, a major alarm occurs and the following actions occur:
-
For sensors 1, 3, and 4 (outlet and onboard sensors), the following actions occur:
-
For sensor 2 (intake sensor), the following actions occur:
-
If the threshold is exceeded in a switching module, only that module is shut down.
-
If the threshold is exceeded in an active supervisor module with HA-standby or standby present, only that supervisor module is shut down and the standby supervisor module takes over.
-
If you do not have a standby supervisor module in your switch, you have up to 2 minutes to decrease the temperature. During this interval, the software monitors the temperature every 5 seconds and continuously sends system messages as configured.
Tip
We recommend that you install dual supervisor modules. If you are using a switch without dual supervisor modules, we recommend that you immediately replace the fan module if just one fan is not working.
-
-
Note | A threshold value of –127 indicates that no thresholds are configured or applicable. |
Use the show environment temperature command to display the temperature readings for each of the powered-up modules.
switch# show environment temperature
Temperature:
--------------------------------------------------------------------
Module Sensor MajorThresh MinorThres CurTemp Status
(Celsius) (Celsius) (Celsius)
--------------------------------------------------------------------
4 CPU 105 95 32 Ok
4 TD2-1 105 95 41 Ok
4 TD2-2 105 95 41 Ok
4 TD2-3 105 95 41 Ok
4 VRM-1 110 100 41 Ok
4 VRM-2 110 100 45 Ok
4 VRM-3 110 100 40 Ok
22 CPU 105 95 34 Ok
22 TD2-1 105 95 45 Ok
22 TD2-2 105 95 41 Ok
22 VRM-1 110 100 49 Ok
22 VRM-2 110 100 47 Ok
27 OUTLET 75 55 29 Ok
27 INLET 60 42 20 Ok
27 CPU 90 80 27 Ok
28 OUTLET 75 55 27 Ok
28 INLET 60 42 22 Ok
28 CPU 90 80 33 Ok
29 CPU 105 95 40 Ok
30 CPU 105 95 34 Ok
switch#
Connecting to a Module
You can connect to any module by using the attach module slot_number command. When the the module prompt appears, you can obtain further details about the module by using module-specific commands in EXEC mode.
You can also use the attach module command to display the standby supervisor module information, although you cannot configure the standby supervisor module using this command.
Note | To see which slots are filled with modules, use the show inventory command. |
Use the attach module slot_number command to get direct access to a specific module.
This example shows how to attach to the supervisor in slot 28.
switch# attach module 28 Attaching to module 28 ... To exit type 'exit', to abort type '$.' Cisco Nexus Operating System (NX-OS) Software TAC support: http://www.cisco.com/tac Copyright (c) 2002-2013, Cisco Systems, Inc. All rights reserved. The copyrights to certain works contained in this software are owned by other third parties and used and distributed under license. Certain components of this software are licensed under the GNU General Public License (GPL) version 2.0 or the GNU Lesser General Public License (LGPL) Version 2.1. A copy of each such license is available at http://www.opensource.org/licenses/gpl-2.0.php and http://www.opensource.org/licenses/lgpl-2.1.php switch(standby)#
Note | To exit the module-specific prompt, use the exit command. |
Tip | If you are not accessing the switch from a console terminal, this command is the only way to access the standby supervisor module. |
Saving the Module Configuration
To save the new configuration to nonvolatile storage, use the copy running-config startup-config command from EXEC mode. Once you enter this command, the running and the startup copies of the configuration are identical.
The following table lists various scenarios when module configurations are preserved or lost.
|
Scenario |
Result |
|---|---|
|
A particular switching module is removed and you used the copy running-config startup-config command again. |
The configured module information is lost. |
|
A particular switching module is removed and the same switching module is replaced before you enter the copy running-config startup-config command again. |
The configured module information is preserved. |
|
A particular switching module is removed and replaced with the same type switching module, and you entered the reload module slot_number command. |
The configured module information is preserved. |
|
A particular switching module is reloaded when you enter the reload module slot_number command. |
The configured module information is preserved. |
Shutting Down or Starting Up a Module
You can shut down or power up a module by using the poweroff module or no poweroff module command to specify the module by its slot number in the chassis.
Note | To determine the slot number for a module, use the show inventory command. |
Purging a Nonfunctioning Module from the Running Configuration
You can clear the running configuration for a system controller, I/O, or fabric slot (slots 1 to 30) that is not functioning by using the purge module command in EXEC mode.
Note | This command does not work on supervisor slots or on any I/O slot that currently has a powered-up module. |
Use the purge module slot_number runnning-config command to clear the running configuration for the specified I/O slot.
switch# purge module 4 running-config
Verify that either the system controller, I/O, or fabric slot is empty or that the module installed in the slot is powered down.
For example, suppose that you create an IP storage configuration with an I/O module in slot 3 of Switch A. This module uses an IP address. You decide to remove this I/O module and move it to Switch B, and you no longer need the IP address. If you try to configure this unused IP address, you receive an error message that prevents you from proceeding with the configuration. In this case, you need to enter the purge module 3 running-config command to clear the old configuration in Switch A before using the IP address.
Displaying Power Usage Information
To display the power usage information for the entire switch, use the show environment power command. This command shows the power usage for the modules installed in the switch.
Note | Power usage is reserved for both supervisor modules regardless of whether one or both supervisor modules are present. |
Use the show environment power command to display power usage information for the switch.
switch# show environment power
Power Supply:
Voltage: 12 Volts
Power Actual Actual Total
Supply Model Output Input Capacity Status
(Watts ) (Watts ) (Watts )
------- ------------------- ---------- ---------- ---------- -------------
-
1 N9K-PAC-3000W-B 517 W 566 W 3000 W Ok
2 ------------ 0 W 0 W 0 W Absent
3 ------------ 0 W 0 W 0 W Absent
4 N9K-PAC-3000W 0 W 0 W 0 W Shutdown
Actual Power
Module Model Draw Allocated Status
(Watts ) (Watts )
------- ------------------- ----------- ----------- --------------
4 N9k-X9636PQ 177.00 W 399.60 W Powered-Up
22 N9K-C9504-FM 118.00 W 300.00 W Powered-Up
24 N9K-C9504-FM N/A 0.00 W Powered-Dn
26 N9K-C9504-FM N/A 0.00 W Powered-Dn
27 N9K-SUP-A 47.00 W 79.92 W Powered-Up
28 N9K-SUP-A 45.00 W 79.92 W Powered-Up
29 N9K-SC-A 12.00 W 60.00 W Powered-Up
30 N9K-SC-A 23.00 W 60.00 W Powered-Up
fan1 N9K-C9504-FAN 47 W 225.00 W Powered-Up
fan2 N9K-C9504-FAN 48 W 225.00 W Powered-Up
fan3 N9K-C9504-FAN 47 W 249.00 W Powered-Up
N/A - Per module power not available
Power Usage Summary:
--------------------
Power Supply redundancy mode (configured) Non-Redundant(combined
)
Power Supply redundancy mode (operational) Non-Redundant(combined
)
Total Power Capacity (based on configured mode) 3000.00 W
Total Power of all Inputs (cumulative) 3000.00 W
Total Power Output (actual draw) 517.00 W
Total Power Input (actual draw) 566.00 W
Total Power Allocated (budget) 1728.24 W
Total Power Available for additional modules 1271.76 W
switch#
Power Cycling a Module
You can reset a module by using the reload module slot_number command and specifying the module by its slot number in the chassis.
 Caution | Reloading a module disrupts traffic through the module. |
Note | To see which slots are filled with modules, use the show inventory command. |
Rebooting a Switch
You can reboot or reload the switch by using the reload command without any options.
Note | If you need to use the reload command, be sure to save the running configuration first by using the copy running-config startup-config command. |
Overview of Supervisor Modules
The switch has one or two supervisor modules.
When a switch has two supervisors, one supervisor is automatically active while the other is in standby mode. If the active supervisor goes down or is disconnected for replacement, the standby supervisor automatically becomes active. If you need to replace one of two installed supervisor modules with another module, you can do so without interrupting operations. The supervisor that you are not replacing becomes the active supervisor and retains the kickstart configuration while you replace the other supervisor. If the switch has just one supervisor, you can install the new supervisor in the open supervisor slot during operations and make that supervisor active after the installation.
Note | If there are two supervisors installed in the chassis, both must be the same type. That is, either both supervisors must be supervisor A modules (four cores, 16 GB memory, and 64 GB of SSD) or both must be supervisor B modules (six cores, 24 GB memory, and 256 GB of SSD). |
Supervisor modules are automatically powered up and started with the switch.
To understand the terms used for the supervisors, see the following table.
Overview of I/O Module Support
The switch supports the following I/O modules in slots 1 through 4:
-
48-port 1-/10-Gigabit SFP+ plus 4-port 40-Gigabit QSFP+ I/O module (N9K-X9464PX)
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48-port 1-/10-GBASE-T plus 4-port 40-Gigabit QSFP+ I/O module (N9K-X9464TX)
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48-port 1-/10-GBASE-T plus 4-port 40-Gigabit QSFP+ I/O module (N9K-X9564TX)
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48-port 1-/10-Gigabit SFP+ plus 4-port 40-Gigabit QSFP+ I/O module (N9K-X9564PX)
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36-port 40-Gigabit QSFP+ aggregation (non-blocking) I/O module (N9K-X9636PQ)
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36-port 40-Gigabit QSFP+ I/O module (N9K-X9536PQ)
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32-port 40-Gigabit QSFP+ I/O module (N9K-X9432PQ)
Note | The slots are labeled as LC 1 to LC 4. |
Accessing an I/O Module Through a Console
You can troubleshoot bootup problems for an I/O module by accessing the module through its console port. This action establishes a console mode that you must exit in order to use other Cisco NX-OS commands.
To attach to the console port for an I/O module, use the attach console module command to specify the module that you need to work with.
Use the attach console module slot_number command to attach the console to a specific I/O module.
switch# attach console module 3 connected Escape character is `~,' (tilde comma]
Note | To exit the console mode, enter the ~, command. |
Overview of Fabric Modules
| Fan Tray Slot | Fabric Module Slots |
|---|---|
|
41 (labeled as FAN 1) |
21 (labeled as FM 1) |
|
22 (labeled as FM 2) |
|
|
42 (labeled as FAN 2) |
23 (labeled as FM 3) |
|
24 (labeled as FM 4) |
|
|
43 (labeled as FAN 3) |
25 (labeled as FM 5) |
|
26 (labeled as FM 6) |
We recommend that you install three to six fabric modules in the switch. To ensure that each of the fan trays is powered up, be sure that the fabric modules are installed in the slots specifed in the following table and install blank filler modules in the remaining slots to maintain the designed airflow.
| Quantity of Fabric Modules Installed | Slots filled with fabric modules |
|---|---|
|
1 |
— |
|
2 |
— |
|
3 |
22, 24, and 26 (labeled as FM 2, FM 4, and FM 6) |
|
4 |
22, 23, 24, and 26 (labeled as FM 2, FM 3, FM 4, and FM6) |
|
5 |
21, 22, 23, 24, and 26 (labeled as FM 1, FM 2, FM 3, FM 4, and FM 6) or 22, 23, 24, 25, and 26 (labeled as FM 2, FM 3, FM 4. FM 5, and FM 6) |
|
6 |
21, 22, 23, 24, 25, and 26 (labeled as FM 1, FM 2, FM 3, FM 4, FM 5, and FM 6) |
Overview of Power Modes
You can configure one of the following power modes to either use the combined power provided by the installed power supply units (no power redundancy) or to provide power redundancy for when there is a power loss:
- Combined mode
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This mode allocates the combined power of all power supplies to active power for switch operations. This mode does not allocate reserve power for power redundancy in case of power outages or power supply failures.
- Power-supply (n+1) redundancy mode
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This mode allocates one power supply as a reserve power supply in case an available power supply fails. The remaining power supplies are allocated for available power. The reserve power supply must be at least as powerful as each power supply used for the available power.
For example, if a switch requires 2.0 kW of available power and the switch has two power supplies that each output 3 kW, then one of the power supplies provides 3.0 kW of available power and one power supply provides 3.0 kW of reserve power in case the other power supply fails.
- Input-source (grid n+n ) redundancy mode
-
This mode allocates half of the power to available power and the other half to reserve power. You must use a different power source for the active and reserve power sources so that if the power source used for active power fails, the other power source used for the reserve power can provide power for the switch.
For example, if the switch requires 4.0 kW of power, the switch has four power supplies that each output 3 kW. If you have two power grids, you use grid A to power two 3-kW power supplies that provide the available power for the switch and you use grid B to power the other two 3-kW power supplies that provide the reserve power in case grid A fails.
Power Mode Configuration Guidelines
The amounts of available and reserve power depend on the power redundancy mode that you specify and the number of power supplies installed in the switch. For each redundancy mode, consider the following:
- Combined mode
-
The available power equals the combined output of all installed power supplies. There is no reserve power. You activate this mode by using the power redundancy-mode combined command.
For example, if the power requirement for a switch is 5.2 kW and the switch has one 3-kW power supply with 220 V input and 3.0-kW output, consider the following power planning scenarios:
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Scenario 1—No added power supplies
If you do not add a power supply unit, the available power (3.0 kW) is insufficient for the switch power requirement of 5.2 kW, so the switch powers the supervisor modules, system controllers, fan trays, and at least one fabric module before powering as many of the fabric and I/O modules as the remaining available power can support (one or more fabric or I/O modules might not be powered).
-
Scenario 2—Install an extra 3-kW power supply
If you install an additional 3-kW power supply unit that can output 3.0 kW, the available power becomes 6.0 kW. The increased amount of available power exceeds the switch power requirement of 5.2 kW, so all of the modules and fan trays in the switch can power up.
The following table shows the results for each scenario.
Scenario Power Requirement Power Supply 1 Output Power Supply 2 Output Available Power Reserve Power Result 1
5.2 kW
3.0 kW
—
3.0 kW
—
Available power is less than the power requirement for the switch, so you cannot power the entire switch (some of the I/O modules will not be able to power up).
2
5.2 kW
3.0 kW
3.0 kW
6.0 kW
—
Available power exceeds the power requirement for the switch, so the entire switch can power up.
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- Power supply (n+1) redundancy mode
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The power supply that outputs the most power provides the reserve power so that it can take over for any other power supply that fails, and all of the other installed power supplies provide the available power. You activate this power mode by using the power redundancy-mode ps-redundant command.
-
Scenario 1—No added power supplies
One 3-kW power supply provides the reserve power and the other 3-kW power supply, also outputting 3.0 kW, provides the available power. The available power (3.0 kW) does not meet the switch requirements of 5.2 kW, so the switch powers up except for some of its I/O modules.
-
Scenario 2—Adding one 3-kW power supply
One 3-kW power supply, which outputs 3.0 kW, provides the reserve power and the other two 3-kW power supplies, also outputting 3.0 kW each, provide a sufficient amount of power (6.0 kW) to meet the switch requirements (5.2 kW), so the entire switch powers up.
The following table shows the results for each scenario.
Scenario Power Requirement Output (kW) for Power Supplies Available Power Reserve Power Result 1 2 3 1
5.2 kW
3.0 kW
3.0 kW
—
3.0 kW
3.0 kW
Available power is less than the power requirement for the switch, so you cannot power the entire switch (one or two of the I/O modules will not be able to power up).
2
5.2 kW
3.0 kW
3.0 kW
3.0 kW
6.0 kW
3.0 kW
Available power exceeds the power requirement for the switch, so the entire switch can power up.
-
- Input-source (grid or n+n) redundancy mode
-
Half of the 3-kW power supplies are connected to one power source (grid) and the other half are connected to another power source. The available power is provided by one power source and the reserve power is provided by the other power source. If the power source that provides the available power fails, the switch uses the reserve power source to provide its required power. You activate this power mode by using the power redundancy-mode insrc_redundant command.
For example, if the power requirement for a switch is 5.2 kW and the switch has two power supplies that output 3 kW, consider the following power planning scenarios:
-
Scenario 1—No added power supplies
The available power is 3.0 kW (output from one 3-kW power supply) and the reserve power is 3.0 kW (output from the other power supply). The available power (3.0 kW) does not meet the switch requirements (5.2 kW), so most of the modules will power up but some of the I/O modules will not be able to power up.
-
Scenario 2—Adding two 3-kW power supplies
The available power is 6.0 kW (output from two 3-kW power supplies on grid A) and the reserve power is 6.0 kW (output from the other two power supplies on grid B). The available power (6.0 kW) exceeds the power requirement of the switch (5.2 kW), so the entire switch can power up.
The following table shows the results for each scenario.
Scenario Power Requirement Output for Power Supplies Available Power Reserve Power Result 1 2 3 4 1
5.2 kW
3.0 kW
3.0 kW
—
—
3.0 kW
3.0 kW
Available power (3.0 kW) is less than the power requirement for the switch (5.2 kW), so most of the switch can power up but one or more I/O modules cannot power up.
2
5.2 kW
3.0 kW
3.0 kW
3.0 kW
3.0 kW
6.0 kW
6.0 kW
Available power (6.0 kW) exceeds the power requirement for the switch (5.2 kW), so the entire switch can power up.
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Setting the Power Mode
You can configure the power supply mode by using the power redundancy-mode command.
Note | To display the current power supply configuration, use the show environment power command. |
Overview of Fan Trays
Fan trays provide airflow through the switch for cooling. Each fan tray contains multiple fans to provide redundancy. The switch can continue functioning in the following situations:
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One or more fans fail within a fan tray—Even with multiple fan failures, the switch can continue functioning. When a fan fails within a tray, the functioning fans in the module increase their speed to compensate for the failed fans.
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The fan tray is removed for replacement—The fan tray is designed to be removed and replaced while the switch is operating without presenting an electrical hazard or damage to the switch.
Note | When a fan fails or when you remove a fan tray, the remaining operating fans speed up to compensate for the loss of fans. This process can increase the noise made by the fan trays until you replace the missing fan tray or replace the defective fan tray. |
Note | When replacing a failed fan tray in a running system, be sure to promptly replace the fan tray. |
Tip | If one or more fans fail within a fan tray, the Fan Status LED turns red. A fan failure could lead to temperature alarms if not corrected immediately. |
The fan status is continuously monitored by the software. In case of a fan failure, the following actions occur:
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System messages are displayed.
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Call Home alerts are sent (if configured).
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SNMP notifications are sent (if configured).
To display the fan module statuses, see Displaying the Status for the Fan Trays.
Note | The fan trays fill slots 41 (labeled as FAN 1), 42 (labeled as FAN 2), and 43 (labeled as 43) in the chassis. |
Displaying the Status for the Fan Trays
You can display the status of the fan trays by using the show environment fan command.
switch# show environment fan Fan: ------------------------------------------------------ Fan Model Hw Status ------------------------------------------------------ Fan1(sys_fan1) N9K-C9504-FAN 0.5020 Ok Fan2(sys_fan2) N9K-C9504-FAN 0.5020 Ok Fan3(sys_fan3) N9K-C9504-FAN 0.5010 Ok Fan_in_PS1 -- -- Ok Fan_in_PS2 -- -- None Fan_in_PS3 -- -- None Fan_in_PS4 -- -- None Fan Zone Speed: Zone 1: 0x0 Fan Air Filter : NotSupported switch#
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