Netopia 3300-ENT Series, Firmware User Manual

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IP Setup 7-21
Numerous factors influence the choice of ser ved address. It is difficult to specify the address that will be
ser ved to a par ticular client in all circumstances. However, when the address ser ver has been configured, and
the clients involved have no prior address ser ving interactions, the Router will generally ser ve the first unused
address from the first address pool with an available address. The Router star ts from the pool on the first row
and continues to the pool on the last row of this screen.
Once the address ser ver and/or the clients have par ticipated in address ser ving transactions, different rules
apply:
• When requesting an address, a client will often suggest an address to be assigned, such as the one it was
last ser ved. The Router will attempt to honor this request if the address is available. The client stores this
address in non-volatile storage, for example, on disk, and the specific storage method/location differs
depending on the client operating system.
• When requesting an address, a client may provide a client identifier, or, if it does not, the Netopia Firmware
Version 8.7 may construct a pseudo-client identifier for the client. When the client subsequently requests
an address, the Router will attempt to ser ve the address previously associated with the pseudo-client
identifier. This is normally the last address ser ved to the client.
•
Other wise, the Netopia will select the least-recently used available address, star ting from the first address
in the first pool and ending with the last address in the last pool.
Note:
The address ser ving pools on this screen are tied to the IP subnets configured on the IP Subnets
screen. Changes to the IP Subnets screen may affect this screen. In par ticular, deleting a subnet on the IP
Subnets screen will delete the corresponding address ser ving pool, if any, on this screen.
DHCP NetBIOS Options
If your network uses NetBIOS, you can enable the Router to use DHCP to distribute NetBIOS information.
NetBIOS stands for Network Basic Input/Output System. It is a layer of software originally developed by IBM
and Sytek to link a network operating system with specific hardware. NetBIOS has been adopted as an industr y
standard. It offers LAN applications a variety of “hooks” to carr y out inter-application communications and data
transfer. Essentially, NetBIOS is a way for application programs to talk to the network. To run an application that
works with NetBIOS, a non-IBM network operating system or network inter face card must offer a NetBIOS
emulator. Many vendors either provide a version of NetBIOS to inter face with their hardware or emulate its
transpor t layer communications ser vices in their network products. A NetBIOS emulator is a program provided
by NetWare clients that allow workstations to run applications that suppor t IBM’s NetBIOS calls.
• Select DHCP NetBIOS Options and press Return. The DHCP NetBIOS Options screen appears.