Two switches below are working fine as a stack with IOS c3750e-universalk9-mz.122-55.SE5.bin & ipbase license.
Switch#1 (Master, WS-C3750X-24P-S)
Switch#2 (Member, WS-C3750X-24P-S)
After IOS Upgrade to c3750e-universalk9-mz.150-2.SE7.bin, The stack was broken. Switch#2 didn’t recognise valid ipbase license with new IOS and came up with lanbase license instead. Therefore stack cannot be composed due to license mismatch between Switch#1 (ipbase) and switch#2(lanbase).
I’m wondering why Switch#2 didn’t recognise ipbase license with new IOS even though IPASE is running well with previous IOS.
Here is excerpt from “show version” with 15.x image on Switch#2.
License Level: lanbase
License Type: Default. No valid license found.
Next reload license Level: lanbase
Here is excerpt from “show version” with 12.x image on Switch Stack.
License Level: ipbase
License Type: Permanent
Next reload license Level: ipbase
I dont see any other way except leo suggested.
You need to get the license back and apply it and only licensing team would be able to generate license for you.
I have fixed the issue by configuring 'license boot level ipbase' on the member switch#2. The switch recognised IPBASE license well and joined the stack successfully.