DHCP and BOOTP Service
The Dynamic Host Configuration Protocol (DHCP) server and applicant are chip in Cisco IOS. DHCP is based on BOOTP and
shares the acclaimed UDP server anchorage 67 (per RFC 951, RFC 1534, and RFC 2131). When the BOOTP server and DHCP servers
are disabled, all admission packets on UDP anchorage 67 are discarded, and ICMP port-unreachable letters are beatific out in response.
The no ip bootp server and no account dhcp commands can be acclimated to attenuate BOOTP and DHCP, respectively, from the global
configuration mode.