Users Manual Part 1

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Chapter 6 Broadband

EMG6726/8726-B10A User’s Guide

Fullcone NAT

Enable

Select Enable to enable full cone NAT on this connection. This field is available only when you

activate NAT. In full cone NAT, the EMG maps all outgoing packets from an internal IP address

and port to a single IP address and port on the external network. The EMG also maps packets

coming to that external IP address and port to the internal IP address and port.

IGMP Proxy

Enable

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.

Select Enable to have the EMG act as an IGMP proxy on this connection. This allows the EMG to

get subscribing information and maintain a joined member list for each multicast group. It can

reduce multicast traffic significantly.

Apply as Default

Gateway

Select Enable to have the EMG use the WAN interface of this connection as the 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 EMG to use the DNS server addresses

assigned by your ISP.

Select Use Following Static DNS Address if you want the EMG to use the DNS server addresses you

configure manually.

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.

WAN MAC Address

You can see the default MAC address on the EMG’s bottom label. This is also the MAC address the EMG reports to

the ACS (Auto Configuration Server) server.

Factory Default Select this option to have the EMG use the default MAC address for the WAN interface that

came along with this EMG when it was produced.

Clone LAN

Host’s MAC

Address - IP

Address

Select this option and enter a LAN host’s MAC address this WAN interface will use. In this way, the

WAN interface pretends to be that LAN host to the ISP.

Set WAN MAC

Address

Select this option and enter a MAC address that you want the WAN interface to use.

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 Dual Stack Lite on page 66

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

Server IP

Specify the transition router’s IPv6 address.

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 66 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 EMG detect it automatically through DHCP.

The Automatically configured by DHCPC option is configurable only when you set the method of

encapsulation to IPoE.

Table 12 Network Setting > Broadband > Add New WAN Interface/Edit (Routing Mode) (continued)

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