B-8 Firmware User Guide

For a dynamic address, the Router releases the address back to the address pool after it has lost contact with the Mac workstation for over 2 minutes.

For a static address, the Router releases the address back to the address pool after it has lost contact with the Mac workstation for over 20 minutes.

Netopia Firmware Version 8.4 MacIP server characteristics

The Mac workstation uses ATP to both request and receive an address from the Router's MacIP server. Once acquired, NBP confirm packets will be sent out every minute from the Router to the Mac workstation.

Manually distributing IP addresses

If you choose to manually distribute IP addresses, you must enter each computer’s address into its TCP/IP stack software. Once you manually issue an address to a computer, it possesses that address until you manually remove it. That’s why manually distributed addresses are called static addresses.

Static addresses are useful in cases when you want to make sure that a host on your network cannot have its address taken away by the address server. Appropriate candidates for a static address include a network administrator’s computer, a computer dedicated to communicating with the Internet, and gateways.

Using address serving

The Router provides three ways to serve IP addresses to computers on a network. The first, Dynamic Host Configuration Protocol (DHCP), is supported by PCs with Microsoft Windows and a TCP/IP stack. Macintosh computers using Open Transport and computers using the UNIX operating system may also be able to use DHCP. The second way, MacIP, is for Macintosh computers. The third way, called Serve Dynamic WAN Clients (IPCP), is used to fulfill WAN client requirements

The Router can use both DHCP and MacIP. Whether you use one or both depends on your particular networking environment. If that environment includes both PCs and Macintosh computers that do not use Open Transport, you need to use both DHCP and MacIP to distribute IP addresses to all of your computers.

Serve dynamic WAN clients

The third method, used to fulfill WAN client requirements, is called Serve Dynamic WAN Clients. The correct term or protocol is a subset of the PPP suite call IPCP. Originally, this would apply only to switched WAN interface gateways, and not to leased line gateways. However, a new feature can give you Asynchronous PPP dial-in support on the Auxiliary port on any gateway including leased line Netopia gateways.

In any situation where a device is dialing into a Netopia gateway, the gateway may need to be configured to serve IP via the WAN interface. This is only a requirement if the calling device has not been configured locally to know what its address(es) are. So when a client, dialing into a Netopia gateway's WAN interface, is expecting addresses to be served by the answering gateway, you must set the answering Netopia gateway to serve IP via its WAN interface.

You can do this in either of two ways:

use the Serve Dynamic WAN Clients option in the Address Serving Setup screen.

Enabling Serve Dynamic WAN Clients only allows you to specify a pool of addresses from which the dial-in client may get an IP address. It does not allow static addressing.

If you want to serve addresses dynamically, use Serve Dynamic WAN Clients.

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Netopia 3300-ENT manual Manually distributing IP addresses, Using address serving, Serve dynamic WAN clients