ZyXEL ZyWALL USG 300 User Guide - Page 297
Relationships Between Interfaces
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Chapter 13 Interfaces • 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. See Section 13.2 on page 299, Chapter 14 on page 369, and Section 13.10 on page 360 for details. The other types of interfaces--Ethernet, PPP, cellular, VLAN, bridge, and virtual--have a lot of similar characteristics. These characteristics are listed in the following table and discussed in more detail below. Table 58 Ethernet, PPP, Cellular, VLAN, Bridge, and Virtual Interface Characteristics CHARACTERISTICS ETHERNET PPP CELLULAR VLAN BRIDGE VIRTUAL Name* gex pppx cellularx vlanx brx ** IP Address Assignment Static IP address Yes Yes Yes Yes Yes Yes DHCP client Yes Yes Yes Yes Yes No Routing metric Yes Yes Yes Yes Yes Yes Interface Parameters Bandwidth restrictions Yes Yes Yes Yes Yes Yes Packet size (MTU) Yes Yes Yes Yes Yes No DHCP DHCP server Yes No No Yes Yes No DHCP relay Yes No No Yes Yes No Connectivity Check Yes Yes Yes Yes Yes No * - 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, limited by the maximum number of each type of interface). For example, 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. Relationships Between Interfaces In the ZyWALL, 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 59 Relationships Between Different Types of Interfaces INTERFACE REQUIRED PORT / INTERFACE auxiliary interface auxiliary port port group physical port Ethernet interface physical port port group ZyWALL USG 300 User's Guide 297
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