my network is a star topology consisting of the main switch connected to 10 switches.there the is no loop in the network.
is it necessary to have the main switch as the root?
which spanning-tree protocol is recommended to be enabled on all switches in this case ?
Might add, you make at least a two link Etherchannel from the edge switch where connected to different 3750s or different line cards in a chassis. This avoids single point of failure for the connection to your "core". As for redundancy of the rest of the core device, 3750 stacks will continue to function with loss of one member, chassis needs to support dup sups, etc.