User Manual

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The amount of time that a computer may have an IP address before it is required to renew the lease. The
lease functions just as a lease on an apartment would. The initial lease designates the amount of time before
the lease expires. If the tenant wishes to retain the address when the lease is expired then a new lease is
established. If the lease expires and the address is no longer needed than another tenant may use the
address.
Always Broadcast
If all the computers on the LAN successfully obtain their IP addresses from the router's DHCP server as
expected, this option can remain disabled. However, if one of the computers on the LAN fails to obtain an IP
address from the router's DHCP server, it may have an old DHCP client that incorrectly turns off the broadcast
flag of DHCP packets. Enabling this option will cause the router to always broadcast its responses to all
clients, thereby working around the problem, at the cost of increased broadcast traffic on the LAN.
NetBIOS Advertisement
Check this box to allow the DHCP Server to offer NetBIOS configuration settings to the LAN hosts. NetBIOS
allows LAN hosts to discover all other computers within the network, e.g. within Network Neighbourhood.
Learn NetBIOS information from WAN
If NetBIOS advertisement is swicthed on, switching this setting on causes WINS information to be learned
from the WAN side, if available. Turn this setting off to configure manually.
Primary WINS Server IP address
Configure the IP address of the preferred WINS server. WINS Servers store information regarding network
hosts, allowing hosts to 'register' themselves as well as discover other available hosts, e.g. for use in Network
Neighbourhood. This setting has no effect if the 'Learn NetBIOS information from WAN' is activated.
Secondary WINS Server IP address
Configure the IP address of the backup WINS server, if any. This setting has no effect if the 'Learn NetBIOS
information from WAN' is activated.
NetBIOS Scope
This is an advanced setting and is normally left blank. This allows the configuration of a NetBIOS 'domain'
name under which network hosts operate. This setting has no effect if the 'Learn NetBIOS information from
WAN' is activated.
NetBIOS Registration mode
Indicates how network hosts are to perform NetBIOS name registration and discovery.
H-Node, this indicates a Hybrid-State of operation. First WINS servers are tried, if any, followed by local
network broadcast. This is generally the preferred mode if you have configured WINS servers.
M-Node (default), this indicates a Mixed-Mode of operation. First Broadcast operation is performed to register
hosts and discover other hosts, if broadcast operation fails, WINS servers are tried, if any. This mode favours
broadcast operation which may be preferred if WINS servers are reachable by a slow network link and the
majority of network services such as servers and printers are local to the LAN.
P-Node, this indicates to use WINS servers ONLY. This setting is useful to force all NetBIOS operation to the
configured WINS servers. You must have configured at least the primary WINS server IP to point to a working
WINS server.
B-Node, this indicates to use local network broadcast ONLY. This setting is useful where there are no WINS
servers available, however, it is preferred you try M-Node operation first.
This setting has no effect if the 'Learn NetBIOS information from WAN' is activated.
Add/Edit DHCP Reservation
This option lets you reserve IP addresses, and assign the same IP address to the network device with the
specified MAC address any time it requests an IP address. This is almost the same as when a device has a
static IP address except that the device must still request an IP address from the router. The router will
provide the device the same IP address every time. DHCP Reservations are helpful for server computers on
the local network that are hosting applications such as Web and FTP. Servers on your network should either
use a static IP address or use this option.
Computer Name