Chapter 9 Interfaces
ZyWALL ATP Series User’s Guide
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9.12 Interface Technical Reference
Here is more detailed information about interfaces on the Zyxel Device.
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 203
Example: Entry in the Routing Table Derived from Interfaces
For example, if the Zyxel Device gets a packet with a destination address of 100.100.25.25, it routes the
packet to interface lan1. If the Zyxel Device 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/L2TP
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.
Spillover
This field displays with the spillover load balancing algorithm. Specify the maximum
bandwidth of traffic in kilobits per second (1~1048576) to send out through the interface
before using another interface. When this spillover bandwidth limit is exceeded, the Zyxel
Device sends new session traffic through the next interface. The traffic of existing sessions
still goes through the interface on which they started.
The Zyxel Device uses the group member interfaces in the order that they are listed.
OK
Click
OK
to save your changes back to the Zyxel Device.
Cancel
Click
Cancel
to exit this screen without saving.
Table 116 Configuration > Network > Interface > Trunk > Edit (System Default) (continued)
LABEL
DESCRIPTION
Table 117 Example: Routing Table Entries for Interfaces
IP ADDRESS(ES)
DESTINATION
100.100.1.1/16
lan1
200.200.200.1/24
wan1
lan1
wan1
