Billion BiPAC 7700N User Manual page 71

Subnet Mask: the default Subnet mask on the router.
Enable IGMP Snooping: Enable or disable the IGMP Snooping function. Without IGMP snooping,
multicast traffic is treated in the same manner as broadcast traffic - that is, it is forwarded to all
ports. With IGMP snooping, multicast traffic of a group is only forwarded to ports that have
members of that group."
When enabled, you will see two modes:
Standard Mode: In standard mode, multicast traffic will flood to all bridge ports when no
client subscribes to a multicast group.
Blocking Mode: In blocking mode, the multicast data will be blocked when there are no
client subscribes to a multicast group, it won't flood to the bridge ports.
Enable LAN Side Firewall: Blocking all service on the LAN side. After activating it, the user on the
LAN side can't access CPE any more. But, you still can enjoy the internet service on the LAN side.
But Note that by default the remote access (HTTP service in WAN side, you can go to
enable remote access service) is disabled, thus if you enable LAN Side Firewall, then in this case,
you can have no access to manage this CPE through both LAN and WAN, the only method you
can adopt is to restore the CPE to default setting.
DHCP Server
You can disable or enable the DHCP (Dynamic Host Configuration Protocol) server or enable the
router's DHCP relay functions. The DHCP protocol allows your router to dynamically assign IP
addresses to PCs on your network if they are configured to obtain IP addresses automatically.
Disable DHCP Server: Disable the DHCP Server function.
Enable DHCP Server: Enable the DHCP function, enter the information wanted. Here as
default.
Start IP Address: the start IP address of the range the DHCP Server used to assign to the Clients.
68
Service to