ZyXEL Communications ISG50-ISDN User Manual page 235

- * The format of interface names other than the Ethernet and ppp interface names is strict. Each name consists of 2-4
letters (interface type), followed by a number (x). For most interfaces, x is limited by the maximum number of the
type of interface. For VLAN interfaces, x is defined by the number you enter in the VLAN name field. For example,
Ethernet interface names are wan1, wan2, lan1, lan2, dmz; VLAN interfaces are vlan0, vlan1, vlan2, ...; and so on.
** - The names of virtual interfaces are derived from the interfaces on which they are created. For example, virtual
interfaces created on Ethernet interface wan1 are called wan1:1, wan1:2, and so on. Virtual interfaces created on
VLAN interface vlan2 are called vlan2:1, vlan2:2, and so on. You cannot specify the number after the colon(:) in the
Web Configurator; it is a sequential number. You can specify the number after the colon if you use the CLI to set up
a virtual interface.
Relationships Between Interfaces
In the ISG50, interfaces are usually created on top of other interfaces. Only Ethernet interfaces are
created directly on top of the physical ports or port groups. The relationships between interfaces
are explained in the following table.
Table 62 Relationships Between Different Types of Interfaces
INTERFACE
port group
Ethernet interface
VLAN interface
bridge interface
PPP interface
virtual interface
(virtual Ethernet interface)
(virtual VLAN interface)
(virtual bridge interface)
trunk
* - You cannot set up a PPP interface, virtual Ethernet interface or virtual VLAN interface if the underlying interface is a
member of a bridge. You also cannot add an Ethernet interface or VLAN interface to a bridge if the member
interface has a virtual interface or PPP interface on top of it.
Finding Out More
• See Section 6.3 on page 92
zones in the ISG50.
• See Section 6.6.3 on page 98
• See Section 12.8 on page 276
• See Section 7.1 on page 107
zones.
• See Section 7.2 on page 109
• See Chapter 13 on page 281
ISG50 User's Guide
REQUIRED PORT / INTERFACE
physical port
physical port
port group
Ethernet interface
Ethernet interface*
VLAN interface*
WAN1, WAN2
Ethernet interface*
VLAN interface*
bridge interface
Ethernet interface
Cellular interface
VLAN interface
bridge interface
PPP interface
details on the differences between physical ports, interfaces, and
for related information about the Interface screens.
for background information on interfaces.
for an example of configuring Ethernet interfaces, port role, and
for an example of configuring a cellular (3G) interface.
to configure load balancing using trunks.
Chapter 12 Interfaces
235