Name: Cisco Catalyst 3850
Brand: Cisco
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Switch Stack Update

Performing the Stack Update

Best Practice User Guide for the Catalyst 3850 and Catalyst 3650 Switch Series

Note To learn the differences for the install and bundle installation modes, see the “Working with the Cisco

IOS File System, Configuration File, and Software Bundle Files” chapter of the Cisco IOS File System,

Configuration Files, and Bundle Files Appendix, Cisco IOS XE Release 3SE (Catalyst 3850 Switches)

Step 3 If your switch stack is running in bundle mode, use the request platform software package expand

switch file to flash command to convert it to install mode.

Step 4 After the .bin file has successfully extracted to flash, change the boot statement and boot to the

packages.conf file.

Note Since the format of the pacakges.conf file has changed in Cisco IOS XE Release Denali 16.1, overwrite

the old packages.conf with the new packages.conf file. Perform the above step for eachswitch in your

stack. If you have a 3 member stack, it will need to be done on flash:, flash-2:, and flash-3.

Note Make sure the tftp server is reachable. To improve performance, increase the tftp block size to 8192. Use

the ip tftp blocksize bytes command in global configuration mode.

Switch Ports Model SW Version SW Image Mode

------ ----- ----- ---------- ---------- ----

* 1 32 WS-C3850-24P Denali 16.1.1 CAT3K_CAA-UNIVERSALK9

BUNDLE

2 32 WS-C3850-24P Denali 16.1.1 CAT3K_CAA-UNIVERSALK9

BUNDLE

3 32 WS-C3850-24P Denali 16.1.1 CAT3K_CAA-UNIVERSALK9

request platform software package expand switch 1 file

flash:cat3k_caa-universalk9.BLD_V161_0_THROTTLE_LATEST_20151116_230450.SSA.b

in to flash::

no boot system

boot system switch all flash:packages.conf

exit

write memory

reload

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