ZyXEL Communications 110, 1100, 310 7.10 Interface Technical Reference

Chapter 7 Interfaces

Table 59 Configuration > Network > Interface > Create Virtual Interface (continued)

LABEL	DESCRIPTION
Ingress	This is reserved for future use.
Bandwidth	Enter the maximum amount of traffic, in kilobits per second, the ZyWALL can receive
	from the network through the interface. Allowed values are 0 - 1048576.
OK	Click OK to save your changes back to the ZyWALL.
Cancel	Click Cancel to exit this screen without saving.

7.10 Interface Technical Reference

Here is more detailed information about interfaces on the ZyWALL.

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.

Figure 99 Example: Entry in the Routing Table Derived from Interfaces

lan1wan1

Table 60 Example: Routing Table Entries for Interfaces

IP ADDRESS(ES)	DESTINATION
100.100.1.1/16	lan1
200.200.200.1/24	wan1

For example, if the ZyWALL gets a packet with a destination address of 100.100.25.25, it routes the packet to interface lan1. If the ZyWALL gets a packet with a destination address of 200.200.200.200, it routes the packet to interface wan1.

In most interfaces, you can enter the IP address and subnet mask manually. In PPPoE/PPTP interfaces, however, the subnet mask is always 255.255.255.255 because it is a point-to-point interface. For these interfaces, you can only enter the IP address.

In many interfaces, you can also let the IP address and subnet mask be assigned by an external DHCP server on the network. In this case, the interface is a DHCP client. Virtual interfaces, however, cannot be DHCP clients. You have to assign the IP address and subnet mask manually.

In general, the IP address and subnet mask of each interface should not overlap, though it is possible for this to happen with DHCP clients.

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	ZyWALL 110/310/1100 Series User’s Guide