Switching an Interface Between Layer 2 and Layer 3 Modes

S7700 V200R019C10 Configuration Guide - Interface Management

This document describes the interface management configuration, including basic interface configuration, Ethernet interface configuration, and logical interface configuration.

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Switching an Interface Between Layer 2 and Layer 3 Modes

Context

To switch between Layer 2 and Layer 3 modes on multiple interfaces, run the portswitch batch command in the system view.

IP addresses can be assigned to Ethernet interfaces in Layer 3 mode.

By default, an Ethernet interface works at Layer 2 and belongs to VLAN 1. An interface is not removed from VLAN 1 immediately after being switched to Layer 3 mode. It is removed from VLAN 1 only when Layer 3 protocols are Up.

You can configure Layer 2 and Layer 3 modes of an Ethernet interface in the Ethernet interface view or system view. When the configurations in the two views differ, the latest configuration takes effect.

Procedure

Switch an Ethernet interface to Layer 3 mode in the Ethernet interface view.
1. Run system-view
  The system view is displayed.
2. Run interface interface-type interface-number
  The Ethernet interface view is displayed.
3. Run undo portswitch
  The interface is switched to Layer 3 mode.
  
  By default, an Ethernet interface works in Layer 2 mode.
  
  When you run this command on an interface, the mode switching configuration takes effect when only attribute configurations (such as shutdown and description configurations) exist on the interface. If service configurations (such as the port link-type trunk configuration) exist on the interface, you need to clear all service configurations before running this command.
Switch an Ethernet interface to Layer 2 mode in the Ethernet interface view.
1. Run system-view
  The system view is displayed.
2. Run interface interface-type interface-number
  The Ethernet interface view is displayed.
3. Run portswitch
  The interface is switched to Layer 2 mode.
  
  By default, an Ethernet interface works in Layer 2 mode.
  
  When you run this command on an interface, the mode switching configuration takes effect when only attribute configurations (such as shutdown and description configurations) exist on the interface. If service configurations (such as the port link-type trunk configuration) exist on the interface, you need to clear all service configurations before running this command.
Switch Ethernet interfaces to Layer 3 mode in a batch in the system view.
1. Run system-view
  The system view is displayed.
2. Run undo portswitch batch interface-type { interface-number1 [ to interface-number2 ] } &<1-10>
  The interfaces are switched to Layer 3 mode in a batch.
  
  By default, an Ethernet interface works in Layer 2 mode.
If an Ethernet interface works in Layer 2 mode, the interface uses the system MAC address as its MAC address. If you run the undo portswitch command to switch the interface to Layer 3 mode, the system automatically allocates a MAC address to the interface. For X1E series cards, if the allocated MAC address is the same as an existing MAC address on the network, resulting in a MAC address conflict. To solve this problem, you can run the mac-address mac-address command to manually configure a MAC address for the interface. After running this command, run the reset slot slot-id command to reset the card on which the interface is located to make the configured MAC address take effect.
Switch Ethernet interfaces to Layer 2 mode in a batch in the system view.
1. Run system-view
  The system view is displayed.
2. Run portswitch batch interface-type { interface-number1 [ to interface-number2 ] } &<1-10>
  The interfaces are switched to Layer 2 mode in a batch.
  
  By default, an Ethernet interface works in Layer 2 mode.

Verifying the Configuration

Run the display interface [ interface-type [ interface-number ] ] command in any view or the display this interface command in the interface view to check the current interface status. The interface is a Layer 2 interface if the Switch Port field is displayed in the command output and is a Layer 3 interface if the Route Port field is displayed. The Hardware address field in the command output indicates the MAC address of the interface.

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Updated: 2021-10-20

Document ID: EDOC1100126849

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