12-18-2009 08:56 AM - edited 03-06-2019 09:00 AM
Greetings,
Let say, I have two switch stack (3750). Can I upgrade and reboot one switch at a time? Thank you.
12-18-2009 09:42 AM
Hi,
You can use reload slot stack-member-number to reset the stack member.
but, you should always use the same IOS version for the entire stack
form the config guide:
All stack members must run the same Cisco IOS software version to ensure compatibility in the stack protocol version among the members
Here is more info:
Use a Tar file to upgrade the entire stack and reboot.
HTH
Reza
12-18-2009 09:58 AM
Thanks Reza, I already know the basics of stacks witches. What I usually do, is upgrade with tar file and then reboot the entire stack. I will test the reload slot stack id command in the lab to verify how effective it is. All I want to do, after downloading and extracting the tar file, is to reboot the primary switch, and once that is up, proceed with rebooting the secondary. I know after rebooting the primary, we will have two versions of IOS, will this be an issue before I reboot the secondary? Thank you.
12-18-2009 10:12 AM
Then, you will have 2 different versions of IOS and Switches with different major version numbers are incompatible and cannot exist in the same stack.
Also, switches with the same major version number but with a different minor version number as the master are considered partially compatible. When connected to a stack, a partially compatible switch enters version-mismatch mode and cannot join the stack as a fully functioning member.
Reza
Find answers to your questions by entering keywords or phrases in the Search bar above. New here? Use these resources to familiarize yourself with the community: