NetComm N300 - Manual (Page 49)

YML9WMAXXN ADSL2+ Wireless N300 Modem Router with VoIP User Guide
www.netcomm.com.au 49
NetComm Gateway TM Series - ADSL2+ Wireless N300 Modem Router with VoIP
8.2 LAN
Use this screen to configure LAN interface settings.
NOTE: NAT is enabled so Enable UPnP is shown above while DHCP Server Relay is hidden. Consult the field descriptions below for more details.
Field Means
LAN IP Address Default: 192.168.1.1. The LAN IP address of your NB9WMAXXn.
LAN Subnet Mask Default: 255.255.255.0. The subnet mask of your NB9WMAXXn. A subnet mask is used to determine what subnet an IP address
belongs to. For more information on subnetting see http://www.ralphb.net/IPSubnet/.
Enable UPnP Universal plug and play (UPnP) allows traffic to pass through the NB9WMAXXn for applications using the UPnP protocol. This
feature requires one active WAN connection. In addition, the client connecting to the NB9WMAXXn should support this feature.
UPnP also supports NAT Traversal which can automatically solve many NAT-related communications problems. UPnP enables
applications to assign dynamic port mappings to the NB9WMAXXn and delete them when connections are complete.
A typical example is the MSN Messenger application that runs on Windows. Instead of manually setting up the port mappings
UPnP enables MSN Messenger to make the request to the NB9WMAXXn which will setup these ports dynamically. When MSN
Messenger is closed the port openings will be removed from the NB9WMAXXn’s configuration.
Configure the second IP address and subnet mask for LAN interface. It is possible to configure the second IP address to access
the NB9WMAXXn on. Once this box is checked you are able to enter the IP address and subnet mask.
Disable DHCP Server Disables the DHCP server. Only to be done if Static IP address is set up.
Enable DHCP Server Default: Enabled.
Start IP Address Default: 192.168.1.2. The first IP address that will be issued to the first DHCP client connecting to the NB9WMAXXn using
Ethernet cable or wirelessly.
End IP Address Default: 192.168.1.254. The last IP address in the DHCP pool to be issued to DHCP clients connecting to the NB9WMAXXn.
Lease Time Default: 24 hours. The time an IP address is assigned to a client before being renewed.
Enable IGMP Snooping IGMP specifies how a host can register a router in order to receive specific multicast traffic. IGMP Snooping allows the
NB9WMAXXn to capture IGMP frames. When your NB9WMAXXn hears an IGMP report from a host for a given multicast group
it adds the host’s port number for that group. When the NB9WMAXXn hears an IGMP Leave, it removes the host’s port from the
table entry.
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. IGMP Snooping
generates no additional network traffic, allowing you to significantly reduce multicast traffic passing through your NB9WMAXXn.
Save Save the settings.
Save / Reboot Save and reboot with the settings applied.
NOTE: The Save button saves new settings to allow continued configuration while the Save/Reboot button not only saves new settings but also reboots the device to apply
the new configuration (i.e. all new settings).