Page 71 / 103
Scroll up to view Page 66 - 70
DG-BG4300N User Manual
6.6.3 Tunnel Configuration
This configuration provides a configuration for tunneling an IPv6 network and traffic through a
pre-existing IPv4 network. This technique allows you to connect IPv6 sites over the IPv4
backbone that exists.
Page 72 / 103
DG-BG4300N User Manual
6.6.4 Other Advanced Configuration
Here you can set other miscellaneous advanced settings.
Half Bridge:
When the PPP Half Bridge is enabled the WAN IP address from the ISP is passed straight through the
modem to the local client PC. Only one PC is able to access the Internet using half bridge mode as NAT
is disabled. Half bridge mode can only be used when a single IP address has been assigned by the ISP,
it is not suitable for services that provide multiple IP addresses. Half bridge mode is used when the use
of NAT or NAPT is not desired and there is a single computer attached to the modem. When the half-
bridged modem is used in conjunction with a router handling DHCP, only then multiple computers can
connect to the Internet.
Page 73 / 103
DG-BG4300N User Manual
7. Service Setup
7.1 IGMP Configuration
Multicasting is useful when the same data needs to be sent to more than one hosts. Using
multicasting as opposed to sending the same data to the individual hosts uses less network
bandwidth. The multicast feature also enables you to receive multicast video stream from multicast
servers.
Page 74 / 103
DG-BG4300N User Manual
IP hosts use Internet Group Management Protocol (IGMP) to report their multicast group
memberships to neighboring routers. Similarly, multicast routers use IGMP to discover which of their
hosts belong to multicast groups. This device supports IGMP proxy that handles IGMP messages.
When enabled, this device acts as a proxy for a LAN host making requests to join and leave multicast
groups, or a multicast router sending multicast packets to multicast group on the WAN side.
When a host wishes to join a multicast group, it sends IGMP REPORT message to the device’s IGMP
downstream interface. The proxy sets up a multicast route for the interface and host requesting the
video content. It then forwards the Join to the upstream multicast router. The multicast IP traffic will
then be forwarded to the requesting host. On a leave, the proxy removes the route and then forwards
the leave to the upstream multicast router.
7.1.1 IGMP Proxy Configuration
The IGMP Proxy page allows you to enable multicast on WAN and LAN interfaces. The LAN
interface is always served as downstream IGMP proxy, and you can configure one of the available
WAN interfaces as the upstream IGMP proxy.
Upstream:
The interfaces that IGMP requests from hosts are sent to the multicast router.
Page 75 / 103
DG-BG4300N User Manual
Downstream:
The interface data from the multicast router are sent to hosts in the multicast group
database.
Fields in this page:
Field
Description
IGMP Proxy
Enable/Disable IGMP proxy feature
Proxy Interface
The upstream WAN interface is selected here.
7.1.2 MLD Configuration
Multicast Listener Discovery (MLD) is a component of the Internet Protocol Version 6 (IPv6) suite. MLD
is used by IPv6 routers for discovering multicast listeners on a directly attached link, much like IGMP is
used in IPv4. The protocol is embedded in ICMPv6 instead of using a separate protocol. MLDv1 is
19216811.live