ZyXEL Communications USG FLEX H Series - 7.4 Bridge Interface

Chapter 7 Interfaces
USG FLEX H Series User’s Guide
121
7.4 Bridge Interface
This section introduces bridges and bridge interfaces and then explains the screens for bridge interfaces.
First DNS Server/
Second DNS
Server/ Third DNS
Server
Specify the IP addresses up to three DNS servers for the DHCP clients to use. Use one of the
following ways to specify these IP addresses.
Custom Defined - enter a static IP address.
ZyWALL - the DHCP clients use the IP address of this interface and the Zyxel Device works as
a DNS relay.
First WINS Server/
Second WINS
Server
Type the IP address of the WINS (Windows Internet Naming Service) server that you want to
send to the DHCP clients. The WINS server keeps a mapping table of the computer names
on your network and the IP addresses that they are currently using.
Default Router If you set this interface to DHCP Server, you can select to use either the interface’s IP
address or another IP address as the default router. This default router will become the
DHCP clients’ default gateway.
To use another IP address as the default router, select Custom Defined and enter the IP
address.
Lease time Specify how long each computer can use the information (especially the IP address)
before it has to request the information again.
Advanced Settings
DHCP Option 60 This field appears when Role is set to External. The setting you configure here will only work
when Address Assignment is set to Get Automatically.
DHCP Option 60 is used by the Zyxel Device for identification to the DHCP server using the
VCI (Vendor Class Identifier) on the DHCP server. The Zyxel Device adds it in the initial DHCP
discovery message that a DHCP client broadcasts in search of an IP address. The DHCP
server can assign different IP addresses or options to clients with the specific VCI or reject
the request from clients without the specific VCI.
Type a string using up to 63 of these characters [a-zA-Z0-9!\"#$%&\'()*+,-./
:;<=>?@\[\\\]^_`{}] to identify this Zyxel Device to the DHCP server. For example, Zyxel-TW.
Default SNAT This field appears when Role is set to External.
Select this to have the Zyxel Device use the IP address of the outgoing interface as the
source IP address of the packets it sends out through its WAN trunks. The Zyxel Device
automatically adds SNAT settings for traffic it routes from internal interfaces to external
interfaces.
Apply Click Apply to save your changes back to the Zyxel Device.
Reset Click Reset to return the screen to its last-saved settings.
Table 63 Network > Interface > Interface > Internal/External > Add (LAG)
LABEL DESCRIPTION