The documentation set for this product strives to use bias-free language. For the purposes of this documentation set, bias-free is defined as language that does not imply discrimination based on age, disability, gender, racial identity, ethnic identity, sexual orientation, socioeconomic status, and intersectionality. Exceptions may be present in the documentation due to language that is hardcoded in the user interfaces of the product software, language used based on RFP documentation, or language that is used by a referenced third-party product. Learn more about how Cisco is using Inclusive Language.
To display information about the switch hardware and the hardware modules installed in the switch chassis, use the show hardware command.
|
Enter the show hardware command. Example: |
To display information about the field replaceable units (FRUs), including product IDs, serial numbers, and version IDs, use the show inventory command.
|
Enter the show inventory command. Example: |
You can display the backplane information, including the serial number for the switch, by using the show sprom backplane command.
|
Enter the show sprom backplane command. Example: |
You can display all of the environment-related switch information by using the show environment command.
|
Enter the show environment command. Example: |
Each 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:
Displays system messages
Sends Call Home alerts (if configured)
Sends SNMP notifications (if configured)
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:
Displays system messages.
Sends Call Home alerts (if configured). For more information, refer Associating an Alert Group with a Destination Profile .
Sends SNMP notifications (if configured). For more information, refer Enabling SNMP Notifications.
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. |
You can display temperature readings for module temperature sensors by using the show environment temperature command.
|
Enter the show environment temperature command. Example: |
At any time, you can connect to any module by using the attach module command. Once you are at the module prompt, 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.
| Step 1 |
Enter the attach module slot_number command. Example:Provides direct access to the specified module (in this example, the standby supervisor module is in slot 6). |
||
| Step 2 |
dir bootflash Example:Provides the available space information for the standby supervisor module.
|
To save the new configuration along with the non-default VDC configuration to nonvolatile storage, use the copy running-config startup-config vdc-all command from EXEC mode. Once you enter these commands, 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 |
Consequence |
|---|---|
|
A particular switching module is removed and you used the copy running-config startup-config vdc-all 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 vdc-all 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. |
To display the power usage information for the entire switch, use the show environment power command. This command shows the power usage for many of the modules installed in the switch. For the older modules that do not have the capability to output this information, the output is shown as N/A.
Note |
Power usage is reserved for both supervisor modules regardless of whether one or both supervisor modules are present. |
|
Enter the show environment power command. |
You can reset a module by using the reload module command and specifying the module by its slot number in the chassis.
 Caution |
Reloading a module disrupts traffic through the module. |
| Step 1 |
Enter the configure terminal command to enter the configuration terminal mode. Example: |
| Step 2 |
Specify the slot number for the module that you are resetting by entering the reload module slot_number command. Example: |
To reboot or reload the switch, use the reload command without any options. When you use this command, you reboot the switch.
Note |
If you need to use the reload command, be sure to save the running configuration by using the copy running-config startup-config vdc-all command beforehand. |
| Step 1 |
Start the configuration mode by entering the configure terminal command. Example: |
| Step 2 |
Save the running configuration by entering the copy running-config startup-config vdc-all command. Example: |
| Step 3 |
Reload the switch by entering the reload command. Example: |
The switch has one or two supervisor modules of the following types:
Supervisor 2 Enhanced (N77-SUP2E)
Supervisor 3 Enhanced (N77-SUP3E)
Note |
You can use only one type of supervisor module in a switch. |
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 this 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.
Supervisor modules are automatically powered up and started with the switch.
To shut down a supervisor module, use the out-of-service module command to specify the chassis slot with that module.
| Step 1 |
Start the configuration mode by entering the configure terminal command. Example: |
| Step 2 |
Take the supervisor module out of service by entering the out-of-service module slot_number command. Example: |
The following table lists the I/O modules supported by the switch.
|
I/O Module |
Supported Cisco Nexus FEX Models | ||||||
|---|---|---|---|---|---|---|---|
| 2224TP | 2232PP | 2232TM | 2232TM-E | 2248PQ | 2248TP | 2248TP-E | |
|
F2-Series Enhanced 48-port 1- and 10-GE with XL (N77-F248XP-23E) |
Yes |
Yes |
Yes |
Yes |
Yes |
Yes |
Yes |
|
F3-Series Enhanced 48-port 1-/10-GE with XL (N77-F348XP-23) |
Yes |
Yes |
Yes |
Yes |
Yes |
Yes |
Yes |
|
F3-Series Enhanced 24-port 40-GE with XL (N77-F324FQ-25) |
Yes |
Yes |
Yes |
Yes |
Yes |
Yes |
Yes |
|
F3-Series Enhanced 12-port 100-GE with XL (N77-F312CK-26) |
Yes |
Yes |
Yes |
Yes |
Yes |
Yes |
Yes |
|
F4-Series 30-port 100-Gigabit Ethernet I/O module (N77-F430CQ-36) |
Yes |
Yes |
Yes |
Yes |
Yes |
Yes |
Yes |
|
M3-Series 48-port 1-/10-GE (N77-M348XP-23L) |
Yes |
Yes |
Yes |
Yes |
Yes |
Yes |
Yes |
|
M3-Series 24-port 40-GE (N77-M324FQ-25L) |
Yes |
Yes |
Yes |
Yes |
Yes |
Yes |
Yes |
|
M3-Series 12-port 100-GE (N77-M312CQ-26L) |
No |
No |
No |
No |
No |
No |
No |
The following F3-Series modules are supported by the Cisco Nexus 7700 Series switches:
F3-Series Enhanced 48-port 1-/10-G Ethernet with XL (N77-F348XP-23)
F3-Series Enhanced 24-port 40-G Ethernet with XL (N77-F324FQ-25)
F3-Series Enhanced 12-port 100-G Ethernet with XL (N77-F312CK-26)
The following F4-Series module is supported by the Cisco Nexus 7700 Series switches:
F4-Series 30-port 100-G Ethernet (N77-F430CQ-36)
The following M3 Series modules are supported by the Cisco Nexus 7700 Series switches:
M3-Series 48-port 1-/10-G Ethernet (N77-M348XP-23L)
M3-Series 24-port 40-G Ethernet (N77-M324FQ-25L)
M3-Series 12-port 100-G Ethernet (N77-M312CQ-26L)
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 you need to work with. Specify a slot from 1 to2 or from 5 to 6.
Note |
To exit the console mode, enter the ~ , command. |
|
Attach to the console port for the I/O module by entering the attach console module slot_number command. Example: |
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 or I/O module, use the show module slot_number command to specify a slot number.
For information on a specific fabric module, use the show module xbar slot_number command to specify a slot number.
For a description of the module status indicated by one of the above show module commands, see the following table.
| 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 module and the switch is ready to be configured. |
|
HA-standby |
The HA switchover mechanism is enabled on the standby supervisor module. |
switch# show module
Mod Ports Module-Type Model Status
--- ----- ----------------------------------- ------------------ ----------
1 48 1/10 Gbps Ethernet Module N77-M348XP-23L ok
2 24 10/40 Gbps Ethernet Module N77-M324FQ-25L ok
3 0 Supervisor Module-3 N77-SUP3E active *
4 0 Supervisor Module-3 N77-SUP3E ha-standby
5 30 100 Gbps Ethernet Module N77-F430CQ-36 ok
6 48 1/10 Gbps Ethernet Module N77-F348XP-23 ok
Mod Sw Hw
--- -------------- ------
1 8.3(0)SK(0.47) 0.203
2 8.3(0)SK(0.47) 0.203
3 8.3(0)SK(0.47) 0.909
4 8.3(0)SK(0.47) 0.203
5 8.3(0)SK(0.47) 0.203
6 8.3(0)SK(0.47) 0.203
Mod MAC-Address(es) Serial-Num
--- -------------------------------------- ----------
1 50-06-ab-91-05-a0 to 50-06-ab-91-05-d3 JAE194108S6
2 00-57-d2-0a-9c-c0 to 00-57-d2-0a-9d-23 JAE194507M4
3 0c-68-03-28-d9-58 to 0c-68-03-28-d9-6a JAE172704C3
4 1c-df-0f-79-17-6d to 1c-df-0f-79-17-7f JAE171807ZJ
5 00-27-90-a1-9a-20 to 00-27-90-a1-9a-83 JAE214303MP
6 e8-ed-f3-e4-c8-e8 to e8-ed-f3-e4-c9-1f JAE17360CZA
Mod Online Diag Status
--- ------------------
1 Pass
2 Pass
3 Pass
4 Pass
5 Pass
6 Pass
Xbar Ports Module-Type Model Status
--- ----- ----------------------------------- ------------------ ----------
1 0 Fabric Module 3 N77-C7706-FAB-3 ok
2 0 Fabric Module 3 N77-C7706-FAB-3 ok
3 0 Fabric Module 3 N77-C7706-FAB-3 ok
4 0 Fabric Module 3 N77-C7706-FAB-3 ok
5 0 Fabric Module 3 N77-C7706-FAB-3 ok
6 0 Fabric Module 3 N77-C7706-FAB-3 ok
Xbar Sw Hw
--- -------------- ------
1 NA 0.705
2 NA 0.703
3 NA 0.703
4 NA 0.703
5 NA 0.703
6 NA 0.703
Xbar MAC-Address(es) Serial-Num
--- -------------------------------------- ----------
1 NA JAE213604M9
2 NA JAE212106WA
3 NA JAE212106VM
4 NA JAE212106W6
5 NA JAE212106WX
6 NA JAE212106X3
* this terminal session
switch# switch# show module 1
Mod Ports Module-Type Model Status
--- ----- --------------------------------- ---------------- ------
1 30 100 Gbps Ethernet Module N77-F430CQ-36 ok
Mod Sw Hw
--- -------------- ------
1 8.3(0)SK(0.47) 0.203
Mod MAC-Address(es) Serial-Num
--- -------------------------------------- ----------
1 00-27-90-a1-ab-50 to 00-27-90-a1-ab-b3 JAE214303LW
Mod Online Diag Status
--- ------------------
1 Pass
Chassis Ejector Support: Enabled
Ejector Status:
Left ejector CLOSE, Right ejector CLOSE, Module HW does support
ejector based shutdown, Ejector policy enabled.
switch#
switch# show module xbar 1
Xbar Ports Module-Type Model Status
--- ----- ----------------------------------- ------------------ ------
1 0 Fabric Module 3 N77-C7706-FAB-3 ok
Xbar Sw Hw
--- -------------- ------
1 NA 0.705
Xbar MAC-Address(es) Serial-Num
--- -------------------------------------- ----------
1 NA JAE213604M9
Chassis Ejector Support: Enabled
Ejector Status:
Top ejector OPEN, Bottom ejector OPEN, Module HW does not support ejector
based shutdown, Ejector policy disabled.
switch#
You can clear the running configuration for an I/O slot that is not functioning by using the purge module command in EXEC mode.
Note |
This command does not work on supervisor slots nor on any I/O slot that currently has a powered-up module. |
Verify that either the I/O slot is empty or the I/O module installed in the slot is powered down.
|
Clear the running configuration by using the purge module slot_number running-config command. Example: |
For example, suppose you create an IP storage configuration with a 48-port 10/100/1000 Ethernet 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 will 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.
You can shutdown or power up an I/O module by using the poweroff module or no poweroff module command to specify the module by its slot number in the chassis.
| Step 1 |
Start the configuration mode by entering the configure terminal command. Example: |
| Step 2 |
Shutdown the module by entering the [no] shutdown module slot_number command. Example:Example: |
This switch supports the following fabric modules:
Fabric 2 (N77-C7706-FAB-2)
Fabric 3 (N77-C7706-FAB-3)
Note |
You can replace a Fabric 2 module with a Fabric 3 module during operations, but while there is a mix of fabric module types, all of the fabric modules perform as Fabric 2 modules. If you reload a switch with Fabric 2 and Fabric 3 modules installed, only the Fabric 3 modules will power up. To utilize the Fabric 3 module capabilities, all of the installed fabric modules must be Fabric 3 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.
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).
Power down the unused slots by using the poweroff xbar slot_number command (see Shutting Down or Powering Up a Fabric Module).
| Step 1 |
Start the configuration mode by entering the configure terminal command. Example: |
| 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: |
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.
Note |
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). |
| Step 1 |
Start the configuration mode by entering the configure terminal command. Example: |
| Step 2 |
Shut down or power up the specified fabric module by entering the [no] shutdown xbar slot_number command. Example:Example: |
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 when there is a power loss:
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.
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.
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.
This mode provides both power-supply (n+1) and input-source (grid) redundancies. As happens with the input-source redundancy mode, this mode allocates half of the power supplies to provide available power and the other half of the power supplies to provide the reserve power. One of the reserve power supplies can alternatively be used to provide power if a power supply supplying the available power fails.
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:
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.
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.
The available power is provided by one power source and the reserve power is provided by the other power source. If the power source providing 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.
Full redundancy provides both power-supply redundancy and input-source redundancy. For power-supply redundancy, the power supply with the most output provides reserve power and the other power supplies provide the available power. For input-source redundancy, the available power is provided by one power source and the reserve power is provided by another power source. You activate this power mode by using the power redundancy-mode redundant command.
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. |
| Step 1 |
Start the configuration mode by entering the configure terminal command. Example: |
| Step 2 |
Specify one of the following power modes by entering the power redundancy-mode mode command:
Example: |
The maximum power available for operations depends on the input power from your power source, the number and output capabilities of your power supplies, and the power redundancy mode that you use. The following table lists the amount of power available for 3-kW AC power supplies depending on power inputs, numbers of power supplies, and the mode used.
|
Power Inputs |
Power Supplies |
Combined Mode |
Power Supply Redundancy Mode |
Input Source Redundancy Mode |
Full Redundancy Mode |
|---|---|---|---|---|---|
|
1 input (220 V) |
1 |
3000 W |
— |
— |
— |
|
2 |
6000 W |
3000 W |
3000 W |
3000 W |
|
|
3 |
9000 W |
6000 W |
3000 W |
3000 W |
|
|
4 |
12000 W |
9000 W |
6000 W |
6000 W |
|
|
1 input (110 V) |
1 |
1450 W |
— |
— |
— |
|
2 |
2900 W |
1450 W |
1450 W |
1450 W |
|
|
3 |
4350 W |
2900 W |
1450 W |
1450 W |
|
|
4 |
5800 W |
4350 W |
2900 W |
2900 W |
The maximum power available for operations depends on the input power from your power source, the number and output capabilities of your power supplies, and the power redundancy mode that you use. The following table lists the amount of power available for 3-kW DC power supplies depending on power inputs, numbers of power supplies, and the mode used.
|
Power Inputs |
Power Supplies |
Combined Mode |
Power Supply Redundancy Mode |
Input Source Redundancy Mode |
Full Redundancy Mode |
|---|---|---|---|---|---|
|
1 input |
1 |
3000 W |
— |
— |
— |
|
2 |
6000 W |
3000 W |
3000 W |
3000 W |
|
|
3 |
9000 W |
6000 W |
3000 W |
3000 W |
|
|
4 |
12000 W |
9000 W |
6000 W |
6000 W |
The maximum power available for operations depends on the input power from your power source, the number and output capabilities of your power supplies, and the power redundancy mode that you use. The following table lists the amount of power available for 3.5-kW HVAC/HVDC power supplies depending on AC power inputs, number of power supplies, and the mode used.
|
Power Inputs |
Power Supplies |
Combined Mode |
Power Supply Redundancy Mode |
Input Source Redundancy Mode |
Full Redundancy Mode |
|---|---|---|---|---|---|
|
1 input (277 V) |
1 |
3500 W |
— |
— |
— |
|
2 |
7000 W |
3500 W |
3500 W |
3500 W |
|
|
3 |
10,500 W |
7000 W |
3500 W |
3500 W |
|
|
4 |
14,000 W |
10,500 W |
7000 W |
7000 W |
|
|
1 input (220/230 V) |
1 |
3500 W |
— |
— |
— |
|
2 |
7000 W |
3500 W |
3500 W |
3500 W |
|
|
3 |
10,500 W |
7000 W |
3500 W |
3500 W |
|
|
4 |
14,000 W |
10,500 W |
7000 W |
7000 W |
|
|
1 input (210 V) |
1 |
3100 W |
— |
— |
— |
|
2 |
6200 W |
3100 W |
3100 W |
3100 W |
|
|
3 |
9300 W |
6200 W |
3100 W |
3100 W |
|
|
4 |
12,400 W |
9300 W |
6200 W |
6200 W |
|
|
1 input (110 V) |
1 |
1500 W |
— |
— |
— |
|
2 |
3000 W |
1500 W |
1500 W |
1500 W |
|
|
3 |
4500 W |
3000 W |
1500 W |
1500 W |
|
|
4 |
6000 W |
4500 W |
3000 W |
3000 W |
Note |
A combination of 3-kW AC and 3.5-kW HVAC/HVDC power supplies can be used. |
The maximum power available for operations depends on the input power from your power source, the number and output capabilities of your power supplies, and the power redundancy mode that you use. The following table lists the amount of power available for 3.5-kW HVAC/HVDC power supplies depending on DC power inputs, number of power supplies, and the mode used.
|
Power Inputs |
Power Supplies |
Combined Mode |
Power Supply Redundancy Mode |
Input Source Redundancy Mode |
Full Redundancy Mode |
|---|---|---|---|---|---|
|
1 input (380 V) |
1 |
3,500 W |
— |
— |
— |
|
2 |
7,000 W |
3,500 W |
3,500 W |
3,500 W |
|
|
3 |
10,500 W |
7,000 W |
3,500 W |
3,500 W |
|
|
4 |
14,000 W |
10,500 W |
7,000 W |
7,000 W |
|
|
1 input (220/240 V) |
1 |
3,500 W |
— |
— |
— |
|
2 |
7,000 W |
3,500 W |
3,500 W |
3,500 W |
|
|
3 |
10,500 W |
7,000 W |
3,500 W |
3,500 W |
|
|
4 |
14,000 W |
10,500 W |
7,000 W |
7,000 W |
|
|
1 input (210 V) |
1 |
3,100 W |
— |
— |
— |
|
2 |
6,200 W |
3,100 W |
3,100 W |
3,100 W |
|
|
3 |
9,300 W |
6,200 W |
3,100 W |
3,100 W |
|
|
4 |
12,400 W |
9,300 W |
6,200 W |
6,200 W |
Note |
A combination of 3-kW DC and 3.5-kW HVAC/HVDC power supplies can be used. |
38 mm Gen 1 Fan Tray (N77-C7706-FAN)
76 mm Gen 2 Fan Tray (N77-C7706-FAN-2)—Use this fan tray for Network Equipment Building System (NEBS) compliance when the Cisco Nexus 7700 M3-Series 12-port 100-Gigabit Ethernet I/O module (N77-M312CQ-26L) or the Cisco Nexus 7700 F4-Series 30-port 100-Gigabit Ethernet I/O module (N77-F430CQ-36) is installed on the switch.
Note |
During normal switch operations, all 3 fan trays in a switch should be of the same type. |
Fan trays provide airflow through a switch for cooling. Each fan tray contains multiple fans to provide redundancy. The switch can continue functioning in the following situations:
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. If a fan fails, the failed fan has to be replaced.
switch# show environment fan
Fan:
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Fan Model Hw Status
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Fan1(sys_fan1) N77-C7706-FAN-2 1.0 Failure(Failed Fanlets: 2 )
Fan2(sys_fan2) N77-C7706-FAN-2 1.0 Ok
Fan3(sys_fan3) N77-C7706-FAN-2 1.0 Ok
Fan_in_PS1 -- -- Ok
Fan_in_PS2 -- -- Ok
Fan_in_PS3 -- -- Shutdown
Fan_in_PS4 -- -- Ok
--More--2017 Mar 15 01:45:40 switch-m3100scale %$ VDC-1 %$ %PLATFORM-1-PFM_ALERT: FAN_BAD: fan1
Fan Zone Speed %(Hex): Zone 1: 100.00(0xff)
switch#Note |
The switch will shut down if a mix of Gen 1 (N77-C7706-FAN) and Gen 2 (N77-C7706-FAN-2) fan trays are present in the same switch for more than 21600 seconds (6 hours). The syslog message "PLATFORM-0-FAN_MISMATCH_TIME: Mismatch of Fan modules. Both Gen1 and Gen2 fans are present in the fantray for <number> seconds" will be displayed at regular intervals when both Gen 1 and Gen 2 fan trays are present in the same switch. |
Note |
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Caution |
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:
System messages are displayed.
Call Home alerts are sent (if configured). For more information, refer Associating an Alert Group with a Destination Profile .
SNMP notifications are sent (if configured). For more information, refer Enabling SNMP Notifications.
.Each of the three fan trays cover two fabric modules as follows:
Fan tray in slot 41 covers the fabric modules in slots 21 and 22.
Fan tray in slot 42 covers the fabric modules in slots 23 and 24.
Fan tray in slot 43 covers the fabric modules in slots 25 and 26.
If you need to replace a fabric module, you must remove the fan tray covering the fabric module before you replace the fabric module. You must replace the fabric module and its covering fan tray within three minutes or an overtemperature condition can occur.
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Enter the show environment fan command. Example: |
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