Netopia 4752 2a4na Benutzerhandbuch

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The Netopia 4752 releases the DHCP address back to the available DHCP address pool exactly one hour 
after the last-heard lease request. Some other DHCP implementations may hold on to the lease for an 
additional time after the lease expired to act as a buffer for variances in clocks between the client and 
ser ver.

Macintosh workstation (MacTCP or Open Transpor t):

Once the Mac workstation requests and receives a valid address, the Netopia 4752 actively checks for the 
workstation’s existence once ever y minute.

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For a dynamic address, the Netopia 4752 releases the address back to the address pool after it has lost 
contact with the Mac workstation for over 2 minutes.

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For a static address, the Netopia 4752 releases the address back to the address pool after it has lost 
contact with the Mac workstation for over 20 minutes.

Netopia 4752 MacIP server characteristics

The Mac workstation uses ATP to both request and receive an address from the Netopia 4752's MacIP ser ver. 
Once acquired, NBP confirm packets will be sent out ever y minute from the Netopia 4752 to the Mac 
workstation.

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 ser ver. Appropriate candidates for a static address include a network 
administrator’s computer, a computer dedicated to communicating with the Internet, and routers.

The Netopia 4752 provides three ways to ser ve IP addresses to computers on a network. The first, Dynamic 
Host Configuration Protocol (DHCP), is suppor ted by PCs with Microsoft Windows and a TCP/IP stack. 
Macintosh computers using Open Transpor t 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 Ser ve Dynamic WAN 
Clients (IPCP), is used to fulfill WAN client requirements

The Netopia 4752 can use both DHCP and MacIP. Whether you use one or both depends on your par ticular 
networking environment. If that environment includes both PCs and Macintosh computers that do not use Open 
Transpor t, you need to use both DHCP and MacIP to distribute IP addresses to all of your computers.

The third method, used to fulfill WAN client requirements, is called Ser ve 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 
inter face routers, and not to leased line routers. However, a new feature can give you Asynchronous PPP dial-in 
suppor t on the Auxiliar y por t on any router including leased line Netopia routers.