Upgrading IOS-XE (3850 switch stack)

Copy image file over as you normally would for any Cisco device.

copy ftp://user:password@192.168.2.1/cat3k_caa-universalk9.SPA.03.03.02.SE.150-1.EZ2.bin flash:

Before we can do the upgrade, we need to make sure that the switches are operating in install mode. To do this use the show ver command.

3850Stack#show ver | begin Switch Ports
Switch Ports Model              SW Version        SW Image              Mode  
------ ----- -----              ----------        ----------            ----  
*    1 56    WS-C3850-48T       03.03.00SE        cat3k_caa-universalk9 INSTALL
     2 56    WS-C3850-48T       03.03.00SE        cat3k_caa-universalk9 INSTALL

Install Mode
This is the default mode for the switch. The INSTALL mode uses a package-provisioning file named packages.conf in order to boot the switch. In addition, there are a number of .pkg files in the flash. Cisco recommends that you do not alter these files unless directed by a Cisco Technical Assistance Center (TAC) engineer.

Bundle Mode
If you are comfortable with the use of traditional monolithic IOS images in order to boot the switch, then the BUNDLE mode should be familiar. The BUNDLE mode consumes more memory than the INSTALL mode because the packages are extracted from the Bundle and copied to the RAM.

Use the show switch command to view the cluster's current status

3850Stack#show switch
Switch/Stack Mac Address : 30cc.d16f.1f91 - Local Mac Address
Mac persistency wait time: Indefinite
                                             H/W   Current
Switch#   Role    Mac Address     Priority Version  State
------------------------------------------------------------
*1       Active   30cc.d16f.1f91    1      A0      Ready              
 2       Standby  3512.d834.cd91     1      A0      Ready              

With the switch in install mode, you can install any supported Cisco IOS-XE software bundle by using the software install command. The new operand denotes that only packages within the bundle being installed will be used (think of it as a clean install).

3850Stack#software install file flash:cat3k_caa-universalk9.SPA.03.03.02.SE.150-1.EZ2.bin new                  
Preparing install operation ...
[1]: Copying software from active switch 1 to switch 2
[1]: Finished copying software to switch 2
[1 2]: Starting install operation
[1 2]: Expanding bundle flash:cat3k_caa-universalk9.SPA.03.03.02.SE.150-1.EZ2.bin
[1 2]: Copying package files
[1 2]: Package files copied
[1 2]: Finished expanding bundle flash:cat3k_caa-universalk9.SPA.03.03.02.SE.150-1.EZ2.bin
[1 2]: Verifying and copying expanded package files to flash:
[1 2]: Verified and copied expanded package files to flash:
[1 2]: Starting compatibility checks
[1 2]: Finished compatibility checks
[1 2]: Starting application pre-installation processing
[1 2]: Finished application pre-installation processing
[1]: Old files list:
    Removed cat3k_caa-base.SPA.03.03.00SE.pkg
    Removed cat3k_caa-drivers.SPA.03.03.00SE.pkg
    Removed cat3k_caa-infra.SPA.03.03.00SE.pkg
    Removed cat3k_caa-iosd-universalk9.SPA.150-1.EZ.pkg
    Removed cat3k_caa-platform.SPA.03.03.00SE.pkg
    Removed cat3k_caa-wcm.SPA.10.1.100.0.pkg
[2]: Old files list:
    Removed cat3k_caa-base.SPA.03.03.00SE.pkg
    Removed cat3k_caa-drivers.SPA.03.03.00SE.pkg
    Removed cat3k_caa-infra.SPA.03.03.00SE.pkg
    Removed cat3k_caa-iosd-universalk9.SPA.150-1.EZ.pkg
    Removed cat3k_caa-platform.SPA.03.03.00SE.pkg
    Removed cat3k_caa-wcm.SPA.10.1.100.0.pkg
[1]: New files list:
    Added cat3k_caa-base.SPA.03.03.02SE.pkg
    Added cat3k_caa-drivers.SPA.03.03.02SE.pkg
    Added cat3k_caa-infra.SPA.03.03.02SE.pkg
    Added cat3k_caa-iosd-universalk9.SPA.150-1.EZ2.pkg
    Added cat3k_caa-platform.SPA.03.03.02SE.pkg
    Added cat3k_caa-wcm.SPA.10.1.121.0.pkg
[2]: New files list:
    Added cat3k_caa-base.SPA.03.03.02SE.pkg
    Added cat3k_caa-drivers.SPA.03.03.02SE.pkg
    Added cat3k_caa-infra.SPA.03.03.02SE.pkg
    Added cat3k_caa-iosd-universalk9.SPA.150-1.EZ2.pkg
    Added cat3k_caa-platform.SPA.03.03.02SE.pkg
    Added cat3k_caa-wcm.SPA.10.1.121.0.pkg
[1 2]: Creating pending provisioning file
[1 2]: Finished installing software.  New software will load on reboot.
[1 2]: Committing provisioning file

[1 2]: Do you want to proceed with reload? [yes/no]: yes
[1 2]: Reloading

Once the reboot is complete (which can take several minutes depending on the size of stack) verify update.

3850Stack#show ver | begin Switch Ports 
Switch Ports Model              SW Version        SW Image              Mode  
------ ----- -----              ----------        ----------            ----  
*    1 56    WS-C3850-48T       03.03.02SE        cat3k_caa-universalk9 INSTALL
     2 56    WS-C3850-48T       03.03.02SE        cat3k_caa-universalk9 INSTALL