3.1. Configuring Interface

Overview

Function Introduction

Interface status, speed and duplex are configurable.

When the interface is configured as no shutdown, it can work normally after cable is connected. When the interface is configured as shutdown, no matter the cable is connected or not, the interface can not work.

If the device supports combo-port, user can choose to enable copper or fiber mode. The two modes of one port can not work together at same time. The configuration of speed or duplex at combo ports cannot be effective when combo port is working at fiber mode.

The rule of physical port name is as following: interface name format is eth-[slot]-[port]; [slot] is 0 for single pizza-box switch; when stacking is enabled, the [slot] number is according to the configuration. The [port] number is begin with 1, and increase from up to down, from left to right. The following figure shows the interface name of the device:

image

image5 To get more information about the interface type and number please reference to the product spec.

Principle Description

N/A

Configuration

Configuring Interface State

step 1 Enter the configure mode

Switch# configure terminal

step 2 Turn on an interface

Switch(config)# interface eth-0-1
Switch(config-if)# no shutdown

step 3 Shut down an interface

Switch(config-if)# interface eth-0-2
Switch(config-if)# shutdown

step 4 Exit the configure mode

Switch(config-if)# end

step 5 Validation

Use the following command to display the status of the interfaces:

Switch# show interface status
Port Status Duplex Speed Mode Type
------------------------------------------------------------
eth-0-1 up a-full a-1000 access 1000BASE_T
eth-0-2 admin down auto auto access 1000BASE_T

Configuring Interface Speed

step 1 Enter the configure mode

Switch# configure terminal

step 2 Enter the interface configure mode and set the speed

Set speed of interface eth-0-1 to 100M:

Switch(config)# interface eth-0-1
Switch(config-if)# speed 100
Switch(config-if)# no shutdown

Set speed of interface eth-0-2 to 1000M:

Switch(config-if)# interface eth-0-2
Switch(config-if)# no shutdown
Switch(config-if)# speed 1000

Set speed of interface eth-0-3 to auto:

Switch(config-if)# interface eth-0-3
Switch(config-if)# no shutdown
Switch(config-if)# speed auto

step 3 Exit the configure mode

Switch(config-if)# end

step 4 Validation

Use the following command to display the status of the interfaces:

Switch# show interface status
Port Status Duplex Speed Mode Type
------------------------------------------------------------
eth-0-1 up a-full 100 access 1000BASE_T
eth-0-2 up a-full 1000 access 1000BASE_T
eth-0-3 up a-full a-1000 access 1000BASE_T

Configuring Interface Duplex

There are 3 duplex mode supported on the device:

  • full mode: the interface can transmit and receive packets at same time.

  • half mode: the interface can transmit or receive packets at same time.

  • auto mode: the interface should negotiate with the other side to decide the duplex mode.

User can choose proper duplex mode according to the network state.

step 1 Enter the configure mode

Switch# configure terminal

step 2 Enter the interface configure mode and set the duplex

Set duplex of interface eth-0-1 to full:

Switch(config)# interface eth-0-1
Switch(config-if)# no shutdown
Switch(config-if)# duplex full

Set duplex of interface eth-0-1 to half:

Switch(config-if)# interface eth-0-2
Switch(config-if)# no shutdown
Switch(config-if)# duplex half

Set duplex of interface eth-0-1 to auto:

Switch(config)# interface eth-0-3
Switch(config-if)# no shutdown
Switch(config-if)# duplex auto

step 4 Validation

Use the following command to display the status of the interfaces:

Switch# show interface status
Port Status Duplex Speed Mode Type
------------------------------------------------------------
eth-0-1 up full a-1000 access 1000BASE_T
eth-0-2 up half a-100 access 1000BASE_T
eth-0-3 up a-full a-1000 access 1000BASE_T

Application cases

N/A