4.4.6 DHCP Relay questions and answers latest 2023

4.4.6 DHCP Relay questions and answers latest 2023Dynamic Host Configuration Protocol (DHCP) A component of the TCP/IP protocol suite used to assign an IP address to a host automatically from a defined pool of addresses DHCPDISCOVER First packet in sequence for DHCP address assignment. The client transmits a broadcast packet via UDP source port 68/destination port 67 asking for IP address. 00:21 01:36 DHCPOFFER Second packet in sequence for DHCP address assignment. DHCP server responds with an offer of IP/subnet mask from pool of addresses and is broadcast on source port 67 and destination port 68. DHCPREQUEST Third packet in sequence for DHCP address assignment. The client responds by requesting the offered address. Possible for multiple offers to be made to the client from different servers but it will only accept one. DHCPACK Fourth packet in sequence for DHCP address assignment. Server that made the offer acknowledges the transaction and sends any other requested IP params to the client. lease renewal the process of a DHCP client renewing its IP address lease by using unicast DHCPREQUEST messages. Packet 1-DHCPREQUEST: Client sends request to server when the lease is 50% expired Packet 2- DHCPACK- If server responds and can honor request, sends unicast packet ot client granting and awkknowledging the renewal requset Reasons why a renewal request might fail If the requested address has been deleted or deactivated from scope If the server doesn't respond DHCP server authorization The process of enabling a DHCP server in a domain environment to prevent rogue DHCP servers from operating on the network DHCP scope Pool of IP addresses and optionally other IP configuration parameters from which a DHCP server leases addresses to DHCP clients lease duration A parameter o the DHCP IP address lease that specifies how long a DHCP client an keep an address exclusion ranges Certain addresses or range of addresses that are excluded from the DHCP scope for use in static address assignments