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Chapter 10 Interface
ZyWALL USG 300 User’s Guide
180
• Trunks manage load balancing between interfaces.
Port groups, trunks, and the auxiliary interface have a lot of characteristics that are specific to
each type of interface. They are discussed in more detail in Section 10.3.1 on page 194,
Chapter 11 on page 219, and Section 10.7.1 on page 215, respectively. The other types of
interfaces--Ethernet, VLAN, bridge, PPPoE/PPTP, and virtual--have a lot of similar
characteristics. These characteristics are listed in the following table and discussed in more
detail below.
* - The format of interface names is strict. Each name consists of 2-4 letters (interface type), followed by a
number (x, limited by the maximum number of each type of interface). For example, Ethernet interface
names are ge1, ge2, ge3, ...; 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 ge1 are called ge1:1, ge1:2, 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.
10.1.2 IP Address Assignment
Most interfaces have an IP address and a subnet mask. This information is used to create an
entry in the routing table.
Table 43 Ethernet, VLAN, Bridge, PPPoE/PPTP, and Virtual Interfaces Characteristics
CHARACTERISTICS ETHERNET VLAN BRIDGE PPPOE/PPTP VIRTUAL
Name* gex vlanx brx pppx **
IP Address Assignment
static IP address
Yes Yes Yes Yes Yes
DHCP client Yes Yes Yes Yes No
routing metric
Yes Yes Yes Yes Yes
Interface Parameters
bandwidth restrictions Yes Yes Yes Yes Yes
packet size (MTU)
Yes Yes Yes Yes No
DHCP
DHCP server Yes Yes Yes No No
DHCP relay
Yes Yes Yes No No
Ping Check Yes Yes Yes Yes No