hi, i test this workaround today and i must say....it works..i upgraded the first switch and plan the other upgrade 50 minutes later. i test it with a host they connected to this stack via lacp. the host was always availibe i have 2 stack with 2 MS425 for redundancy. all other switches are connected via stp to this two stack. now, i think i can create a stack with 4 MS425.
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