Instead of loading an X server from the first host to respond to the terminal's request or specifying the boot server using BOOTP/DHCP, you can specify the names of the boot hosts.

Specifying the Initial Boot Host

To make sure that the terminal tries to boot first from a specific host, you can set the primary boot host's IP address using the boot-tcpip-desired-server parameter (Setup -> Change Setup Parameters -> Booting [TCP/IP Boot Options section] -> TCP/IP Desired Server). Save the new value in NVRAM. This parameter is used for both TFTP and NFS booting.

Table 4-13 boot-tcpip-desired-server Parameter

You can specify more than one boot host to use in case the initial boot server is unavailable. There are three methods:

• Using the -p and -l bootpd options to specify when a secondary host should respond to the terminal's BOOTP requests.
  
  See the bootpd (8) man page for more information.
  

• Setting Second Boot Host IP Address and Third Boot Host IP Address in the Network window of the Boot Monitor Setup menus.
  
  See Chapter 11, Boot Monitor and NVRAM, for more information.
  

• Setting the boot-tcpip-second-server and boot-tcpip-third-server parameters (Setup -> Change Setup Parameters -> Booting [TCP/IP Boot Options section] Secondary TCP/IP Server and Tertiary TCP/IP Server).Set either or both of the following parameters and save them in NVRAM.
  

  Table 4-14 boot-tcpip-second-server Parameter

  Possible Values	Default
  default	0.0.0.0
  0.0.0.0	There is no designated second boot host.
  IP address or hostname	If the primary boot host is unavailable, the terminal attempts to boot from the specified host.

  Table 4-15 boot-tcpip-third-server Parameter

  Possible Values	Default
  default	0.0.0.0
  0.0.0.0	There is no designated third boot host.
  IP address or hostname	If the primary and secondary boot hosts are unavailable, the terminal attempts to boot from the specified host.