1-2Operation Command RemarksEnable the Ethernet port undo shutdownOptionalBy default, the port is enabled.Use the shutdown command todisable the port.Set the description string for theEthernet port description textOptionalBy default, the description string ofan Ethernet port is null.Set the duplex mode of theEthernet port duplex { auto | full | half }OptionalBy default, the duplex mode of theport is auto (auto-negotiation).Set the speed of the Ethernet port speed { 10 | 100 | 1000 | auto }Optionalz By default, the speed of anEthernet port is determinedthrough auto-negotiation (theauto keyword).z Use the 1000 keyword forGigabit Ethernet ports only.Set the medium dependentinterface (MDI) mode of theEthernet portmdi { across | auto | normal }OptionalBe default, the MDI mode of anEthernet port is auto.Set the maximum frame sizeallowed on the Ethernet port to2048 bytes (Only S3100-EI Seriesswitches support this feature)jumboframe enableOptionalBy default, the maximum framesize allowed on an Ethernet port is2048 bytes.Configuring Port Auto-Negotiation SpeedYou can configure an auto-negotiation speed for a port by using the speed auto command.Take a 10/100/1000 Mbps port as an example.z If you expect that 10 Mbps is the only available auto-negotiation speed of the port, you just need toconfigure speed auto 10.z If you expect that 10 Mbps and 100 Mbps are the available auto-negotiation speeds of the port, youjust need to configure speed auto 10 100.z If you expect that 10 Mbps and 1000 Mbps are the available auto-negotiation speeds of the port,you just need to configure speed auto 10 1000.Follow these steps to configure auto-negotiation speeds for a port:To do... Use the command... RemarksEnter system view system-view —Enter Ethernet interface view interface interface-typeinterface-number —Configure the availableauto-negotiation speed(s) forthe portspeed auto [ 10 | 100 | 1000 ]*OptionalBy default, the port speed is determinedthrough auto-negotiation.
