ZyXEL Communications ZyWALL 300 User Manual

 Chapter 10 Interface

ZyWALL USG 300 User’s Guide

A bridge interface creates a software bridge between the members of the bridge interface. It 
also becomes the ZyWALL’s interface for the resulting network.

A bridge interface may consist of the following members:

• Zero or one VLAN interfaces (and any associated virtual VLAN interfaces)

• Any number of Ethernet interfaces (and any associated virtual Ethernet interfaces)

When you create a bridge interface, the ZyWALL removes the members’ entries from the 
routing table and adds the bridge interface’s entries to the routing table. For example, this table 
shows the routing table before and after you create bridge interface br0 (250.250.250.0/23) 
between ge1 and vlan1.

In this example, virtual Ethernet interface ge1:1 is also removed from the routing table when 
ge1 is added to br0. Virtual interfaces are automatically added to or remove from a bridge 
interface when the underlying interface is added or removed.

This screen lists every bridge interface and virtual interface created on top of bridge interfaces. 
To access this screen, click Network > Interface > Bridge.

Figure 135   Network > Interface > Bridge

Each field is described in the following table. 

Table 56   Example: Routing Table Before and After Bridge Interface br0 Is Created

210.210.210.0/24

ge1

221.221.221.0/24

vlan0

210.211.1.0/24

ge1:1

230.230.230.192/26

ge3

221.221.221.0/24

vlan0

241.241.241.241/32

ge4

222.222.222.0/24

vlan1

242.242.242.242/32

ge5

230.230.230.192/26

ge3

250.250.250.0/23

br0

241.241.241.241/32

ge4

242.242.242.242/32

ge5

Table 57   Network > Interface > Bridge

#

This field is a sequential value, and it is not associated with any interface.

Name

This field displays the name of the interface.