Initiating The Dhcp Service; Edirectory Implementation - Novell NETWARE 6-DOCUMENTATION Manual

Initiating the DHCP Service

eDirectory Implementation

If you are planning to use DHCP for the first time, you must gather a
significant amount of information. You need to make a list of all hosts to be
served by the DHCP server. You must include all devices that use network
addresses in every segment of your network. You must also compile lists of IP
address assignments.
Organize your lists of hosts and IP addresses by geographic location. For
example, if your network is spread over a WAN, make a list for each location
to help you organize the distribution of DHCP resources.
You must have a list of all permanently assigned network addresses. You
might also want to make a list of devices that are to be denied IP addresses and
those hosts that are to receive strict limitations on leases.
After you gather the necessary information, you need to create the necessary
objects to represent this information. This is done by creating subnet address
ranges for contiguous network addresses and other, more specific information.
You will probably have a separate subnet address range for each LAN segment
of your network. You will also create objects of subnets and DHCP servers.
Plan to create an Organizational Unit (OU), Country (C), or Locality (L)
container object near the top of your eDirectory tree. Plan to locate the DNS/
DHCP Group and Locator objects under the container object.
The DNS/DHCP Locator object must be easily accessible to all DHCP servers
on the network. Plan to have multiple routes for DHCP servers to access the
DNS/DHCP Group object.
Create Subnet objects to represent each LAN segment. Then create one or
more Subnet Address Range objects to represent all your contiguous strings
of IP addresses.
Place the NetWare Core Protocol
service near the data to be updated and close to a writable partition. For fast
access and availability, a DHCP server should be on the same LAN as or
geographically close to the writable partitions the DHCP server uses.
When a DHCP server makes or modifies address assignments, the database is
updated. The partition where this database is stored should have at least two
writable replicas. Only one replica might be unsafe because of fault tolerance
(NCP ) servers that will provide DCHP
TM TM
63
Planning