ZyXEL Communications ISG50 User Manual
ISG50 User’s Guide
233
C
H A P T E R
1 2
Interfaces
12.1 Interface Overview
Use the Interface screens to configure the ISG50’s interfaces. You can also create interfaces on
top of other interfaces.
top of other interfaces.
• Ports are the physical ports to which you connect cables.
• Interfaces are used within the system operationally. You use them in configuring various
• Interfaces are used within the system operationally. You use them in configuring various
features. An interface also describes a network that is directly connected to the ISG50. For
example, You connect the LAN1 network to the LAN1 interface.
example, You connect the LAN1 network to the LAN1 interface.
• Zones are groups of interfaces used to ease security policy configuration.
12.1.1 What You Can Do in this Chapter
• Use the Port Role screens (
) to create port groups and to assign
physical ports and port groups to Ethernet interfaces.
• Use the Ethernet screens (
) to configure the Ethernet interfaces.
Ethernet interfaces are the foundation for defining other interfaces and network policies. RIP and
OSPF are also configured in these interfaces.
OSPF are also configured in these interfaces.
• Use the PPP screens (
) for PPPoE or PPTP Internet connections.
• Use the Cellular screens (
) to configure settings for interfaces for
Internet connections through an installed 3G card.
• Use the VLAN screens (
) to divide the physical network into multiple
logical networks. VLAN interfaces receive and send tagged frames. The ISG50 automatically adds
or removes the tags as needed. Each VLAN can only be associated with one Ethernet interface.
or removes the tags as needed. Each VLAN can only be associated with one Ethernet interface.
• Use the Bridge screens (
) to combine two or more network segments
into a single network.
• Use the Virtual Interface screen (
) to create virtual interfaces on
top of Ethernet interfaces to tell the ISG50 where to route packets. You can create virtual
Ethernet interfaces, virtual VLAN interfaces, and virtual bridge interfaces.
Ethernet interfaces, virtual VLAN interfaces, and virtual bridge interfaces.
• Use the Trunk screens (
) to configure load balancing.
12.1.2 What You Need to Know
Interface Characteristics
Interfaces generally have the following characteristics (although not all characteristics apply to each
type of interface).
type of interface).
• An interface is a logical entity through which (layer-3) packets pass.
• An interface is bound to a physical port or another interface.
• An interface is bound to a physical port or another interface.