1-2z For a Combo port, only one port (either the optical port or the electrical port) is active at a time. Thatis, once the optical port is active, the electrical port will be inactive automatically, and vice versa.z You can use the display port combo command to display the Combo ports on the current deviceand the mappings between the optical and electrical ports.z You can judge whether a port is optical or electrical by the Media type is field in the displayinterface command output.Management Ethernet Interface ConfigurationIntroduction to management Ethernet interfaceA management Ethernet interface also uses an RJ-45 connector. It can be used to connect abackground PC for software loading and system debugging, or connect to a remote device, for example,a remote network management station, for remote system management. It has the attributes of acommon Ethernet interface, but because it is located on the main board, it provides much fasterconnection speed than a common Ethernet interface when used for operations such as softwareloading and network management.Configuring a management Ethernet interfaceFollow these steps to configure a management Ethernet interface:To do… Use the command… RemarksEnter system view system-view —Enter management Ethernetinterface viewinterface M-Ethernetinterface-number —Set the description string description textOptionalBy default, the descriptionM-Ethernet0/0/0 Interface.Shut down the managementEthernet interface shutdownOptionalBy default, a managementEthernet interface is up.Basic Ethernet Port ConfigurationThree types of duplex modes are available to Ethernet ports:z Full-duplex mode (full). Ports operating in this mode can send and receive packets simultaneously.z Half-duplex mode (half). Ports operating in this mode can either send or receive packets at a giventime.z Auto-negotiation mode (auto). Ports operating in this mode determine their duplex mode throughauto-negotiation.
