832 CHAPTER 61: BOOTP C LIENT CONFIGURATIONObtaining an IP AddressDynamicallyn A DHCP server can take the place of the BOOTP server in the following dynamic IPaddress acquisition.A BOOTP client dynamically obtains an IP address from a BOOTP server in thefollowing way:1 The BOOTP client broadcasts a BOOTP request, which contains its own MACaddress.2 The BOOTP server receives the request and searches the configuration file for thecorresponding IP address according to the MAC address of the BOOTP client. TheBOOTP server then returns a BOOTP response to the BOOTP client.3 The BOOTP client obtains the IP address from the received the response.Protocols and Standards Some protocols and standards related to BOOTP include:■ RFC 951: Bootstrap Protocol (BOOTP)■ RFC 2132: DHCP Options and BOOTP Vendor Extensions■ RFC 1542: Clarifications and Extensions for the Bootstrap ProtocolConfiguring anInterface toDynamically Obtain anIP Address ThroughBOOTPFollow these steps to configure an interface to dynamically obtain an IP address:Displaying andMaintaining BOOTPClient ConfigurationBOOTP ClientConfigurationExampleNetwork requirementSwitch B’s port belonging to VLAN 1 is connected to the LAN. VLAN-interface 1obtains an IP address from the DHCP server by using BOOTP.Network diagramSee Figure 246.Configuration procedureThe following describes only the configuration on Switch B serving as a client.To do… Use the command… RemarksEnter system view system-view -Enter interface view interface interface-typeinterface-number-Configure an interface todynamically obtain IP addressthrough BOOTPip address bootp-alloc RequiredBy default, an interface doesnot use BOOTP to obtain an IPaddress.To do… Use the command… RemarksDisplay related information ona BOOTP clientdisplay bootp client[ interface interface-typeinterface-number ]Available in any view
