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NB620W Super-G Wireless Broadband Gateway User Guide YML725 Rev1
26 www.netcomm.com.au
3.1.2 Local Port
Configure your gateway's Local Port IP address here. The Local Port must be a private IP
address. (10.x.x.x, 192.x.x.x are reserved for LAN use).
Subnet Mask. The subnet mask determines the number of computers that are allowed in this
network. A class C network with the subnet mask 255.255.255.0 allows maximum 253 users
(the gateway is already using the 192.168.1.1) in your local area network. Usually a class C
network is satisfactory for a local network.
DHCP server. To enable the DHCP server, please click the check box. The DHCP server
assigns dynamic IP address to the clients.
Start IP address. Specify the start of the IP address for DHCP users. The default value is
192.168.1.2. (Please make sure there is no fixed IP address within the range you assigned here
on the LAN, otherwise the DHCP client cannot get the IP address correctly.)
Number of IP address. Assign the number of users allowed to use the DHCP service. The
default value is 128 users.
Lease Time. A DHCP user's PC gets the IP address with a lease time. When the lease time is
expired, the user's PC must connect to the DHCP server to request the dynamic IP address
again. When there are lots of mobile users using DHCP service in your network, select an
appropriate time to make sure you manage the IP addresses well, because when the user turns
his computer off and leaves, the gateway might not be aware of that IP address is vacant, thus
that IP address will be idle there until the lease time expired. The default value of the lease time
is 168hours.