Chapter 8 Broadband
AX/DX/EX/PX Series User’s Guide
208
Primary DNS
Server
Enter the first DNS server address assigned by the ISP.
Secondary DNS
Server
Enter the second DNS server address assigned by the ISP.
Routing Feature (This is available only when you select IPv4 Only or IPv4 IPv6 DualStack in the IPv4/IPv6 Mode field.)
NAT Click this switch to activate NAT on this connection.
IGMP Proxy Internet Group Multicast Protocol (IGMP) is a network-layer protocol used to establish
membership in a Multicast group – it is not used to carry user data.
Click this switch to have the Zyxel Device act as an IGMP proxy on this connection.
This allows the Zyxel Device to get subscribing information and maintain a joined member list for
each multicast group. It can reduce multicast traffic significantly.
Apply as Default
Gateway
Click this switch to have the Zyxel Device use this WAN interface of this connection as the system
default gateway.
Fullcone NAT Click this switch to enable full cone NAT on this WAN connection.
This field is available only when you activate NAT.
In full cone NAT, the Zyxel Device maps all outgoing packets from an internal IP address and port
to a single IP address and port on the external network. The Zyxel Device also maps packets
coming to that external IP address and port to the internal IP address and port.
6RD
The 6RD (IPv6 rapid deployment) fields display when you set the IPv6/IPv4 Mode field to IPv4 Only. See IPv6 Rapid
Deployment on page 202 for more information.
Click this switch to tunnel IPv6 traffic from the local network through the ISP’s IPv4 network.
Automatically
configured by
DHCPC
The Automatically configured by DHCPC option is configurable only when you set the method of
encapsulation to IPoE.
Manually
Configured
Select Manually Configured if you have the IPv4 address of the relay server. Otherwise, select
Automatically configured by DHCPC to have the Zyxel Device detect it automatically through
DHCP.
Service Provider
IPv6 Prefix
Enter an IPv6 prefix for tunneling IPv6 traffic to the ISP’s border relay router and connecting to the
native IPv6 Internet.
IPv4 Mask
Length
Enter the subnet mask number (1 – 32) for the IPv4 network.
Border Relay
IPv4 Address
When you select Manually Configured, specify the relay server’s IPv4 address in this field.
DHCPC Options (This is available only when you select IPv4 Only or IPv4 IPv6 DualStack in the IPv4/IPv6 Mode field
and IPoE in the Encapsulation field.)
Note: The available DHCP options may differ by model.
Request Options Select Option 42 to have the Zyxel Device get NTP time server information from DHCP packets
sent from the DHCP server.
Select Option 43 to have the Zyxel Device get vendor specific information from DHCP packets
sent from the DHCP server.
Select Option 120 to have the Zyxel Device get static route information from DHCP packets sent
from the DHCP server.
Select Option 121 to have the Zyxel Device get SIP server information from DHCP packets sent
from the DHCP server.
Sent Options
Table 45 Network Setting > Broadband > Add or Edit New WAN Interface (Routing Mode) (continued)
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