Stack IOS Upgrade Procedure

[benolyndav]

Hi

We have a 3 switch stack and am wondering if anyone can give me step by step instructions on how to upgrade the IOS on the Stack Switches

And also instructions on how to replace one of the Stack members if any issues arise with one.???????? Version and model below

  ( WS-C3750X-12S      15.0(2)SE6            C3750E-UNIVERSALK9-M )

[balaji.bandi]

Here is high level : (read the release notes, download the latest image to your TFTP Server)

1. check any other image in the flahsh except the one running, remove all .bin files

2. Switch#sh boot system  (give you what image you booting now)

3. Switch#dir flash1: (not the .bin name

(Setup a TFTP server and copy the latest version of image in root folder of TFTP)

4. #delete flash1:c3750XXXXXXX.bin ( replace with above noted name as per your setup)

5. #ip tftp blocksize 8192 ( you can copy more and quicker)

6. #Copy tftp://10.10.10.10/c3750XXXXXXXX.bin flash1:  ( repalce TFTP IP and .BIN file name)

Once it copied successs verify the image

#verify /md5 flash:c3750XXXXXXXXXX.bin

Follow same steps for other stack memebers. Once copied to all devices

#boot system switch 1 flash:c3750XXXXXXXXX.bin

Verfy that the Boot System pointing to the new image
#Show boot
Save the running config
#wr
Reboot the stack

Make sure you connect console and see if any issue. post the logs here.

if 3750X  has modules - check if the module required to upgrade.

Check the status of the Service-Module after reload and ensure it is "connected"

[benolyndav]

Hi

Thanks for that, there are 10G modules in but when i do a show switch service-module it states its not connected, we aren't using the ports, can the Switch be upgraded without the module being upgraded as we aren't using it or do they both need upgrading.?

Thanks

[balaji.bandi]

yes, you can upgrade when you get a chance to upgrade that too if required as best practice since you have a maintenance window.

[benolyndav]

Hi

Good point any info on the module upgrade process please.??

Thanks

[balaji.bandi · Accepted solution]

Once the Stack upgrade finished and reloaded.

Get the Service Module image from cisco site.

#archive download-sw /overwrite tftp://10.10.10.10/c3kx-sm10g-XXXX.tar  ( change the IP and image name as per the environment)

as soon it completed with out any errors.

reload the module example switch 1

#sw 1 frulink reload

Once the module reloaded check

#sh sw service-modules

Follow same proceedure if your stack has more service module on each switch.,

hope this help you.