Cisco switch image update

[Jothish97]

Hello Folks,

I want to learn about the Cisco switch image update and it's methods, as far as i know there are few methods (like ISSU, ROMMON) are there to update the image in Cisco switches. Could someone give me any document or link to study about the methods it would be very grateful. Kindly someone help me. 

[DanielP211]

Hello!

To put it shortly there are two methods - boot and install. 

I'm attaching the manual for Cat 9000 series because its the most common.

https://www.cisco.com/c/en/us/support/docs/switches/catalyst-9300-series-switches/216231-upgrade-guide-for-cisco-catalyst-9000-sw.html

BR

[Jothish97]

Thank you.

[Jothish97]

can i use the same process for Cisco catalyst 3750?

[DanielP211]

the cisco C3750 is a bit older, so upgrade is a bit different. Please refer to the following manual

https://www.cisco.com/c/en/us/support/docs/switches/catalyst-3750-series-switches/64898-upgrade-3750-stack.html#anc10

BR

[Leo Laohoo]

What model of switch/router/WLC?

[Leo Laohoo]

Regarding ISSU, please note the LIST of Bug IDs.

[Jothish97]

Thank you Leo

[Jothish97]

Cisco catalyst 9300, 9200 and 3750