图4：为所有适配器设置速度和双工。
交换机和服务器之间的速度和双工不匹配是网络问题的常见原因。
Speed and duplex mismatches between the switch and the server are frequent contributors to network problems.
因此，尽管可以在物理接口上修改介质速度和双工模式，但是要在逻辑接口上设置IP地址和子网。
So, although you can change the media speed and duplex on the physical interface, you set up the IP address and subnet on the logical interface.
应该做的第一件事是，确保所有服务器使用全双工和最高的网络速度，并相应地匹配交换机端口。
The first thing you should do is make sure all servers are locked down to the highest speed possible using full duplex and the switch port is set to match.
大多数现代网络交换机和环境都能利用自动协商机制（auto-negotiation）来提供最佳速度，特别是全双工网络交换机成为标准后。
Most modern network switches and environments can take advantage of auto-negotiation to provide the best speed, especially as full-duplex network switches have become the standard.
大多数现代网络交换机和环境都能利用自动协商机制（auto-negotiation）来提供最佳速度，特别是全双工网络交换机成为标准后。
Most modern network switches and environments can take advantage of auto-negotiation to provide the best speed, especially as full-duplex network switches have become the standard.
应用推荐