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Upgrading Cisco 9300 Switch using TFTP server

July 28, 2021 ,

Upgrading Cisco 9300 Switching using TFTP server

To upgrade a Cisco Catalyst 9300 Series switch, transfer the new software image to the switch and then set it as the active boot image. The procedure is simple and may be completed using the switch's command-line interface (CLI). 

Cisco Catalyst 9300
Fig 1.1- Cisco Catalyst 9300

Step 1: Need to clean old installation files in case of insufficient space and to ensure that you have at least 1GB of space in flash, to expand a new image

NDNA_Switch# install remove inactive

Step 2: Copy the new IOS file to each switch flash through TFTP.
NDNA_Switch# copy tftp://10.10.10.1/cat9k_iosxe.17.09.03.SPA.bin flash:

Where 10.10.10.1 is a TFTP server

Check the flash now
NDNA_Switch# show Flash: 

Step 3: Verify md5 hash file for new IOS file.
NDNA_Switch# verify /md5 flash:cat9k_iosxe.17.09.03.SPA.bin

Step 4: Configure the boot variable as below.
NDNA_Switch(config)# no boot system
NDNA_Switch(config)# boot system switch all flash:cat9k_iosxe.17.09.03.SPA.bin
NDNA_Switch# end
NDNA_Switch# wr

Step 5: Verify the boot variable is configured correctly.
NDNA_Switch# show boot system

Step 6: Need to create packages and install the new IOS.
NDNA_Switch# install add file flash:cat9k_iosxe.17.09.03.SPA.bin activate commit

Note: It will prompt for (Y/N) we need to press Y. Switch will automatically reload once execution of above command completed. This command will also copy new IOS file in standby switches.

Step 7: verify now after reboot
NDNA_Switch# show version | include System image file

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