1Ethernet interface configurationThis chapter includes these sections:• Ethernet interface naming conventions• Configuring basic settings of an Ethernet interface• Displaying and maintaining an Ethernet interfaceEthernet interface naming conventionsThe Ethernet interfaces on the S5120-SI Switch Series are numbered in the format of interface-typeA/B/C:• A represents the ID of the switch in an IRF virtual device. If the switch is not assigned to any IRFvirtual device, A takes 1.• B represents a slot number on the switch. It takes 0.• C represents the number of a port on a slot.Configuring basic settings of an Ethernet interfaceConfiguring duplex mode and speed on an Ethernet interfaceYou can set an Ethernet interface to operate in one of the following duplex modes:• Full-duplex mode (full). Interfaces operating in this mode can send and receive packetssimultaneously.• Half-duplex mode (half). Interfaces operating in this mode cannot send and receive simultaneously.• Auto-negotiation mode (auto). Interfaces operating in this mode negotiate a duplex mode with theirpeers.Similarly, you can set the speed of an Ethernet interface or enable it to automatically negotiate a speedwith its peer. For a 1000-Mbps Layer 2 Ethernet interface, you can also set speed options for autonegotiation. The two ends can pick a speed only from the available options. For more information, see"Setting speed options for auto negotiation on an Ethernet interface."Follow these steps to set duplex mode and speed on an Ethernet interface:To do… Use the command… RemarksEnter system view system-view —Enter Ethernet interface view interface interface-typeinterface-number —
