Mac OS X Leopard - ARCAism

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CHAPTER 9 CONNECTING TO THE INTERNET
DHCP: Dynamic Host Configuration Protocol (DHCP) is more and more common these
days in almost every environment. Not only does it make setting up a system incredibly
easy from the user end, but it also allows reuse of IP addresses and increased manageability
from the administrative perspective.
DHCP with manual address: Usually DHCP will automatically assign a computer that
connects to it the next available IP address it has at its disposal. It will lease this address
to that particular system for a period of time (and usually continue to renew that lease as
long as the system remains connected); however, after a period of time, it may issue the
system a different IP address. For most situations, this is fine; however, occasionally a
system needs a static IP address that won’t change. This option allows you to pick a static
IP address.
NOTE IP addresses need to be unique; even on a private network, every IP address needs to
be different than every other IP address on that network. Because of this, when you manually
assign an IP address, you should be careful that it doesn’t belong to the block of IP addresses
being dynamically assigned and that it isn’t being used by another system on the network.
BootP: Bootstrap Protocol (BootP) is an older technology that was created to allow
diskless workstations or thin clients to receive an IP address automatically from a server.
DHCP is based upon BootP but is much more advanced (and complex).
Manually: This option requires that you manually fill in all the required networking
information. In this case, you will likely be given specific information to use (Figure 9-6).
Off: This turns off the interface.
Create PPPoE Service: This will create a new PPPoE interface for configuring the PPPoE
service (Figure 9-7). If this is required, your service provider will give you the necessary
information for this (username, password, and perhaps a service name).
Figure 9-6. If you must configure your network manually, you will need to fill in all the required
information.