5-3An intermediate file maintains the IP address-to-host name mappings which are created using the iphost hostname ip-address command.When you use this command:z The hostname argument is a character string consisting of letters, digits, “.” and “_” only, whichcannot start with “.”.z You can enter the ip host hostname ip-address command multiple times to create multiplemappings; however, you should press Enter after entering the last command to make it effective.z If still no configuration file is obtained through the above two methods, the switch uses theconfiguration file name in Option 67 of the DHCP response to get the configuration file. If no nameis found in Option 67, the switch requests the default configuration file named device.cfg from theTFTP server.5) After obtaining the configuration file, the switch executes it to complete automatic configuration.If the switch does not get any response from the DHCP server or from the TFTP server, it keepssending the request. You can press Enter to terminate automatic configuration.z In different network environments, after you press Enter, it may take a certain period of time (1 to 6minutes) before the automatic configuration terminates. During this period, the command line inputis disabled in case of deletion of commands mistakenly. After the automatic configurationterminates, the command line input is enabled again.z If the switch obtains the configuration file before you press Enter, the configuration file will not beexecuted.Introduction to BOOTP ClientAfter you specify an interface as a bootstrap protocol (BOOTP) client, the interface can use BOOTP toget information (such as IP address) from the BOOTP server, which simplifies your configuration.Before using BOOTP, an administrator needs to configure a BOOTP parameter file for each BOOTPclient on the BOOTP server. The parameter file contains information such as MAC address and IPaddress of a BOOTP client. When a BOOTP client sends a request to the BOOTP server, the BOOTPserver will search for the BOOTP parameter file and return it to the client.A BOOTP client dynamically obtains an IP address from a BOOTP server in the following way:1) The BOOTP client broadcasts a BOOTP request, which contains its own MAC address.2) The BOOTP server receives the request and searches for the corresponding IP address accordingto the MAC address of the BOOTP client and sends the information in a BOOTP response to theBOOTP client.3) The BOOTP client obtains the IP address from the received response.
