Session 9 Windows Platform Dina Alkhoudari

Learning Objectives Understanding DHCP Address Assignment Understanding Address Leases Understanding DHCP Scopes Unserstanding DHCP Options Installing and configuring DHCP server

Understanding DHCP Address Assignment The function of a DHCP server is to assign IP addresses and other configuration like subnet mask, DNS server and default gateway to computers.

Understanding Address Leases Lease is the period the DHCP assigns an IP address to computer The default lease lasts six or eight days by default The DHCP server keeps track of leased addresses so that no address is assigned to two clients.

Understanding DHCP Scopes Scope is a range of IP addresses defined at the DHCP server in which it uses to assign IP addresses to computers. The DHCP server should be directly connected to the subnet the scope belongs

Unserstanding DHCP Options DHCP options provides clients with addtional configuration parameters, such as DNS or WINS server addresses, along with address lease. More than 60 standard options are available.

Unserstanding DHCP Options Examples: 003 router A preferred list of IPv4 addresses for routers on the same subnets as DHCP clients. The client can then contact these routers as needed to forward IPv4 packets destined for remote hosts. 006 DNS Servers The IP addresses for DNS name servers that DHCP clients can contact and use to resolve a domain host name query. 015 DNS Domain Name An option that specifies the domain name that DHCP clients should use when resolving unqualified names during DNS domain name resolution. 044 WINS/NBNS Servers The IPv4 addresses of primary and secondary WINS servers for the DHCP client to use. 046 WINS/NBT Node Type A preferred NetBIOS name resolution method for the DHCP client to use- such as b-node (0x1) for broadcast only or h-node (0x8) for a hybrid of point-to-point and broadcast methods. 051 Lease An option that assigns a special lease duration only to remote access clients.

Unserstanding DHCP Options Examples: 003 router A preferred list of IPv4 addresses for routers on the same subnets as DHCP clients. The client can then contact these routers as needed to forward IPv4 packets destined for remote hosts. 006 DNS Servers The IP addresses for DNS name servers that DHCP clients can contact and use to resolve a domain host name query. 015 DNS Domain Name An option that specifies the domain name that DHCP clients should use when resoliving unqualified names during DNS domain name resolution. 044 WINS/NBNS Serves The IPv4 addresses of primary and secondary wins servers for the DHCP client to use. 044 WINS/NBT Node Type A preferred NetBIOS name resolution method for the DHCP client to use- such as b-node (0x1) for broadcast only or h-node (0x8) for a hybrid of point-to-point and broadcast methods. 051 Lease An option that assigns a special lease duration only to remote access clients.

Installing and configuring DHCP server Installing DHCP server role Creating Address Exclusions Creating Reservations Adjusting Lease Durations