I have a cluster with 1 3560 and 5 2950 switch. This is working fine for 2 years now.
For redundancy I added a second 3560 switch which I want to configure as a standby command switch.
After adding the new switch to the cluster discovery of the devices takes about 10 minutes to complete. Also I get an error when configuring the new switch as a standby command switch.
The IOS versions on my switches are:
12.2(20)SE4 - SMI on the existing 3560 switch
12.2(25)SEE4 - IP-BASE on the new switch
12.1(22)EA2 - C2950-I6Q4L2-M on the existing 2950 switches
Do I have to upgrade the IOS on my existing 3560 switch? Or is there another reason for my problem.