3 ETHERNET INTERFACE CONFIGURATIONWhen configuring Ethernet interfaces, go to these sections for information youare interested in:■ “General Ethernet Interface Configuration” on page 89■ “Configuring Layer 2 Ethernet Interfaces” on page 92■ “Configuring Layer 3 Ethernet Interfaces” on page 96■ “Maintaining and Displaying an Ethernet Interface” on page 97General EthernetInterfaceConfigurationThis section describes the attributes and configurations common to layer 2Ethernet interfaces and layer 3 Ethernet interfaces. For specific attributes, refer torelated sections hereinafter.Combo PortConfigurationIntroduction to Combo portA Combo port refers to two Ethernet interfaces in a device panel (normally one isan optical port and the other is an electrical port). Inside the device there is onlyone forwarding interface. Combo port and its corresponding electrical port workin a TX/SFP mode. Users can choose one to use depending on the actual networkrequirements, but not two simultaneously. When one port is working, the other isdisabled, and vice versa.The two Ethernet interfaces of a Combo port in the device panel correspond toonly one interface view, in which the two Ethernet interfaces can be switched. ACombo port can be a Layer 2 Ethernet interface or a Layer 3 Ethernet interface.Configuring Combo port stateFollow these steps to configure a single Combo port state:Basic Ethernet InterfaceConfigurationThree types of duplex modes available to Ethernet interfaces:■ Full-duplex mode (full): in this mode, the sending and receiving of data packetshappen simultaneously;To do... Use the command... RemarksEnter system view system-view -Enter Ethernet interface view interface interface-typeinterface-number-Enable a Combo port combo enable { copper |fiber }OptionalBy default, the electrical portis enabled.
