Compatible interfaces

The interface backup feature is configurable for the interfaces in Table 1.

Table 1: Interfaces that support interface backup

Category

Interfaces

Remarks

Ethernet

Layer 3 Ethernet interfaces/subinterfaces

Layer 3 VE interfaces

N/A

Others

Dialer interfaces

Tunnel interfaces

A dialer interface can be used as the primary interface only when it is a PPPoE client in permanent session mode.