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Chapter 10 Interface
ZyWALL USG 100/200 Series User’s Guide
256
Bridge Interface Overview
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 WLAN interfaces
• 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 lan1 and vlan1.
In this example, virtual Ethernet interface lan1:1 is also removed from the routing table when
lan1 is added to br0. Virtual interfaces are automatically added to or remove from a bridge
interface when the underlying interface is added or removed.
10.13.1 Configuring the Bridge Summary Screen
This screen lists every bridge interface and virtual interface created on top of bridge interfaces.
To access this screen, click Network > Interface > Bridge.
Figure 181 Network > Interface > Bridge
Each field is described in the following table.
Table 78 Example: Routing Table Before and After Bridge Interface br0 Is Created
IP ADDRESS(ES) DESTINATION IP ADDRESS(ES) DESTINATION
210.210.210.0/24 lan1 221.221.221.0/24 vlan0
210.211.1.0/24 lan1:1 230.230.230.192/26 wan2
221.221.221.0/24 vlan0 241.241.241.241/32 dmz
222.222.222.0/24 vlan1 242.242.242.242/32 dmz
230.230.230.192/26 wan2 250.250.250.0/23 br0
241.241.241.241/32 dmz
242.242.242.242/32 dmz
Table 79 Network > Interface > Bridge
LABEL DESCRIPTION
# This field is a sequential value, and it is not associated with any interface.
Name This field displays the name of the interface.