We have two switches CISCO WS-C3560G-48TS in our network. When we connect these two switches via cross cable through any of the ports (1-48) and trying to hard code the speed on both sides as 1000M, interface is going down physically. We have enabled dot1Q trunking. Link is working fine with 100M/Full duplex settings. But not working with 1000M speed. Is this an expected behaviour of ports 1-48 (non SFP ports)? SFP Ports are working fine with 1000M/Full. Please suggest.