ZyXEL Communications USG FLEX H Series - CHAPTER 7 Interfaces; 7.1 Interface Overview

USG FLEX H Series User’s Guide
98
CHAPTER 7
Interfaces
7.1 Interface Overview
Use the Interface screens to configure the Zyxel Device’s interfaces. You can also create interfaces on
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 features. An
interface also describes a network that is directly connected to the Zyxel Device. For example, You
connect the LAN network to the LAN interface.
7.1.1 What You Can Do in this Chapter
• Use the Interface (Section 7.2 on page 103) screen to view a summary of the Zyxel Device interface
settings.
• Use the Internal/External Interface (Section 7.3 on page 105) screens to configure Ethernet, VLAN and
LAG interfaces.
Ethernet interfaces are the foundation for defining other interfaces and network policies.
VLAN interfaces receive and send tagged frames. The Zyxel Device automatically adds or removes
the tags as needed. Each VLAN can only be associated with one Ethernet interface.
LAG interfaces combine multiple physical Ethernet interfaces into a single logical interface.
• Use the Bridge (Section 7.4 on page 121) screens to combine two or more network segments into a
single network.
• Use the Trunk (Section 7.7 on page 131) screen to configure load balancing.
• Use the Port screen (Section 7.8 on page 135) to configure Zyxel Device port settings.
7.1.2 What You Need to Know
Interface Characteristics
Interfaces generally have the following characteristics (although not all characteristics apply to each
type of interface).
• An interface is a logical entity through which (layer-3) packets pass.
• An interface is bound to a physical port or another interface.
• Many interfaces can share the same physical port.
• An interface belongs to at most one zone.
• Many interfaces can belong to the same zone.