4. DYNAMIC VERSUS MANUAL TCP/IP ADDRESS ASSIGNMENT M M a a n n u u a a l l T T C C P P / / I I P P C C o o n n f f i i g g u u r r a a t t i i o o n n A A u u t t o o m m a a t t i i c c T T C C P P / / I I P P C C o o n n f f i i g g u u r r a a t t i i o o n n IP addresses entered manually on each client computer IP addresses are supplied auto- matically to client computers Possibility of entering incorrect or invalid IP address Ensures that client always uses correct configuration information Incorrect configuration can lead to communication and network issues Client configuration updated automatically to reflect network changes Administrative overload on networks on which computers are frequently moved Elimination of source of network problems
11. DHCP MESSAGE TYPES Used by clients to obtain additional TCP/IP addresses D D H H C C P P M M e e s s s s a a g g e e T T y y p p e e D D e e s s c c r r i i p p t t i i o o n n DHCPDISCOVER Used by clients to request configuration parameters from a DHCP server DHCPOFFER Used by servers to offer IP addresses to requesting clients DHCPREQUEST Used by clients to accept or renew IP address assignment and to decline unaccepted servers DHCPDECLINE Used by clients to reject an offered IP address DHCPACK Used by servers to acknowledge a client’s acceptance of an offered IP address DHCPNACK Used by servers to reject a client’s acceptance of an offered IP address DHCPRELEASE Used by clients to terminate an IP address lease DHCPINFORM
