I have read many sheets on the 3560, we currently use them. We do have a situation where we need Fault-Tolerance built into our environment. I have looked into the cluster feature of the 3560 but it would seem that is for management only. I see the 3750's are stackable and that is the main advantage over the 3560's. Does anyone know if it is possible to 'stack' the 3560's in a similar fashion? I dont want to scale these down to Layer 2 because we are using the IP Base features. Any ideas on this? Does anyone have pair of 3560's running A/P?
Unfortunately, the 3560 series switches are not stackable, and that is actually the only difference between the 3560 series and the 3750.
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As Reza noted, the 3560 can not be stacked. For redundancy you would either need to do "traditional" L2 loops, and use a STP to control them, or you might use FlexLinks.
BTW, for original 3560s there's a "special" 50CM "stack" cable. Basically, it's a less expensive way to use gig SFP ports between 3560s.