I just moved a stack of 1900s last night from one 6509 to another as part of a core redesign.
So there were 3 stacks that were moved. One is flaky, host on the switches ping but switch IP addresses won't. Each stacks are redundantly connected to two 6509s using GLBP. I do not see an obvious difference on configuration with the flaky stack and the working stacks.
I broke the redundancy on the switch stack and the switches started pinging except for the first switch on the stack.
Does anyone have any idea?
