I have a very simple questions. I'm creating a stack of 2 3750's switches and connecting it to 12 2960G's switches through the copper ports (using etherchannels, one trunk per 3750 switch for redundancy). Should I hardcode duplex/speed on the trunks? I've read so many opinions on this that I am confused. How about the trunks from the 3750 to the 3725 router, Firewall and servers?