I Commands

This chapter describes the Cisco NX-OS commands that begin with I that are used to manage a Cisco Nexus 2000 Series Fabric Extender from a Cisco Nexus 6000 switch.

install fex

To perform a nondisruptive preload and upgrade of Fabric Extenders (FEX) which are online with a switch, use the install fex command.

install fex { fex_id | fex_range }

Note You can use either a FEX ID, a FEX range, multiple FEX IDs or FEX ranges, or a combination of both FEX IDs and FEX ranges.

 
Syntax Description

fex_id

Fabric Extender ID. The FEX ID ranges from 100 to 199.

fex_range

Fabric Extender range. The range is from 100 to 199.

 
Command Default

None.

 
Command Modes

EXEC mode.

 
Command History

Release
Modification

7.1(4)N1(1)

This command was introduced.

 
Usage Guidelines

We recommend to use the install all command to upgrade the FEX devices along with the switch.

Use the install fex command only when one or more FEX devices fail during a nondisruptive upgrade process executed using the install all command.

The install process executed using the install fex command will display the upgrade failure of that particular FEX devices but will continue the upgrade process for other remaining FEXs.

Note These are the two uses cases for the install fex command:

  • For VPC topology, it is recommended to execute the install fex command after upgrading both the switches, and should be executed for FEX devices that failed to upgrade. Although the install fex command can be used after upgrading the first switch, but it is less recommended.
  • For straight through single-homed FEX topology, execute the install fex command only after the switch upgrade.

Examples

This example shows how to do the install process for a specific FEX ID:

switch# install fex 120
switch#
 

This example shows how to do the install process for a FEX ID and a FEX range:

switch# install fex 120, 130-145
switch#
 
This example shows how to do the install process for multiple FEX IDs and FEX ranges:
 
switch# install fex 120, 130-145, 148-155, 199
switch#
 

 
Related Commands

Command
Description

show fex

Displays all configured Fabric Extender chassis connected to the switch.