I just updated the IOS on a Cisco C819G-4G-V-K9 router from 15.3(3)M to 15.6(3)M2.  The reason I did this is because we are having issues with some of our routers where the modem (Sierra Wireless MC7750) have failed. Looking through the forum I came ...

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?...