User Manual

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addresses from these ranges are to be manually configured. Suppose you have a web server
computer that has a manually configured address of 192.168.0.100. Because this falls within
the "managed range" be sure to create a reservation for this address and match it to the
relevant computer (see Static DHCP Client below).
DHCP Lease Time
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