I'm looking to implement some changes to our network to introduce a distribution layers instead of the just Core/Access design we have now and wanted to get some thoughts on a couple of things:
In a Catalyst 3750G stack if there are only two members in a stack and the stack cable breaks, but both switches are still operational would this cause a MAC flap as there is an etherchannel over two switches? If so would a stack with three stop this problem as there would be an 'double hop' connection to the third switch.
Where about's should I be feeding my data centre into the layers, should I be looking at getting some high speed resilient switches and having these fed in as an access layer or should I connect them directly in to the distribution or core layer?
Are there recommendations on the amount of access layer switches/ports/bandwidth you should be connecting to a distribution switch for best practices?
Just to add I've read through the best practice design document, so saw the parts about 20:1 access to distribution and 4:1 distribution to core, but wanted to know more in terms of whether there are limitations on the amount of switches you should stack together in the distribution layer.