ZyXEL Communications PMG2006-T20A User Manual page 45

Table 9 Network Setting > Broadband > Add New WAN Interface/Edit (Routing Mode) (continued)
LABEL DESCRIPTION
802.1q Type the VLAN ID number (from 1 to 4094) for traffic through this connection.
MTU
MTU Size Enter the MTU (Maximum Transfer Unit) size for this traffic.
Routing Feature (This is available only when you select IPv4 Only or IPv4 IPv6 DualStack in the IPv4/IPv6 Mode field.)
NAT Enable Select this option to activate NAT on this connection.
Fullcone NAT Select this option to enable full cone NAT on this connection. This field is available only when you
Enable activate NAT. In full cone NAT, the PMG2006-T20A maps all outgoing packets from an internal IP
address and port to a single IP address and port on the external network. The PMG2006-T20A
also maps packets coming to that external IP address and port to the internal IP address and
port.
IGMP Proxy Internet Group Multicast Protocol (IGMP) is a network-layer protocol used to establish
Enable membership in a Multicast group - it is not used to carry user data.
Select this option to have the PMG2006-T20A act as an IGMP proxy on this connection. This
allows the PMG2006-T20A to get subscribing information and maintain a joined member list for
each multicast group. It can reduce multicast traffic significantly.
Apply as Default Select this option to have the PMG2006-T20A use the WAN interface of this connection as the
Gateway system default gateway.
DNS Server (This is available only when you select IPv4 Only or IPv4 IPv6 DualStack in the IPv4/IPv6 Mode field.)
Select Obtain DNS Info Automically if you want the PMG2006-T20A to use the DNS server
addresses assigned by your ISP.
Select Use Following Static DNS Address if you want the PMG2006-T20A to use the DNS server
addresses you configure manually.
Primary DNS Enter the first DNS server address assigned by the ISP.
Server
Secondary DNS Enter the second DNS server address assigned by the ISP.
Server
Tunnel
The DS-Lite (Dual Stack Lite) fields display when you set the IPv4/IPv6 Mode field to IPv6 Only.
Enable Dual Stack Lite to let local computers use IPv4 through an ISP's IPv6 network. See
for more information.
Enable DS-Lite This is available only when you select IPv6 Only in the IPv4/IPv6 Mode field. Select Enable to let
local computers use IPv4 through an ISP's IPv6 network.
DS-Lite Relay Specify the transition router's IPv6 address.
Server IP
6RD
The 6RD (IPv6 rapid deployment) fields display when you set the IPv6/IPv4 Mode field to IPv4 Only. See
Deployment on page 40 for more information.
6RD Select Enable to tunnel IPv6 traffic from the local network through the ISP's IPv4 network.
Select Manually Configured if you have the IPv4 address of the relay server. Otherwise, select
Automatically configured by DHCPC to have the PMG2006-T20A detect it automatically through
DHCP.
The Automatically configured by DHCPC option is configurable only when you set the method of
encapsulation to IPoE.
Service Provider Enter an IPv6 prefix for tunneling IPv6 traffic to the ISP's border relay router and connecting to the
IPv6 Prefix native IPv6 Internet.
Chapter 6 Broadband
PMG2006-T20A User's Guide
45
Dual Stack Lite on page 41
IPv6 Rapid