Configuring an Interface Pair Using the Web UI

This section describes how to configure an interface pair.

Context

An interface pair is a pair of incoming and outgoing interfaces of the same type. After an interface pair is formed, the traffic enters the incoming interface of the interface pair is forwarded out of the outgoing interface in the interface pair, without MAC address table lookup. If the incoming and outgoing interfaces are the same interface, the packets entering the interface are forwarded out of the same interface after being processed.

If the incoming and outgoing interfaces are the same interface, do not send broadcast traffic to the interface. Otherwise, a local loopback may occur on the connected device.

Procedure

Choose Network > Interface.
Click Edit in the row of the interface to change the interface mode to Interface Pair.
Choose Network > Interface Pair.

Click Add and create an interface pair. Only interfaces in Interface Pair mode can be added to an interface pair.

Parameter	Description
Name	Specifies the name of the interface pair.
Working mode	Specifies the working mode of the interface. Inject via another interface: An interface pair has two interfaces. Packets entering one interface are forwarded through the other. Inject via the same interface: The interface pair has only one interface. Packets entering the interface are forwarded out of the same interface after being processed.
Member	Select members for an interface pair. When the working mode of the interface pair is Inject via another interface, you are advised not to use interfaces with different bandwidth upper limits as an interface pair to prevent adverse impact on services due to traffic congestion caused by surging traffic.
Allowed VLAN	Specifies the scope of the VLAN ID.
Status Synchronization	Enables the function of status synchronization.
Advanced
Default VLAN ID	Specifies the default VLAN ID.

Click OK.