RedundancyDHCP and Domain Controller

Dr. John P. AbrahamProfessor

UTPA

DHCP Redundancy

• Divide usable IP addresses into Static and Dynamic.

• dynamically assigned IP addresses are divided among multiple DHCP servers

• Each DHCP gets a scope (range of IP addresses)

Multiple domain controllers

• Reasons:– Redundancy– Clustering – can’t cluster unless you have more

than one domain controller– Presence of more than one geographical location• You can make remote sites read only• Read only receives updates from the primary domain

controller. Two way updates on WAN might slow it down.

Domain controller setup

• As directed to you in assignments, you must have static IP on servers with domain controller.

• Add the Active Directory Role from the Server Manager– If this is the first domain controller, choose create new domain

in new forest– If this is a backup dc, choose Add domain controller in existing

forest. Give the existing domain name.• When finished, you have to do a dcpromo from the

console prompt.– This is where you choose read only, if that’s what you want to

do. Usually it is not read only.