Netra j 2.0 Administrator's Guide

Required DHCP Options

Table 8-3 lists the DHCP options required in dhcptab to boot JavaStation computers. For your reference, the left column gives the option number as defined in the DHCP specification (RFC 2132), if it exists. The middle column gives the symbol name for the option in the Solaris implementation of DHCP (the name used in dhcptab). See "Sample dhcptab File " to see how these names are used.

Table 8-3 DHCP Options Required to Boot JavaStation computers


DHCP Option Name (Number)	Symbol Name in Solaris `dhcptab` File	Definition
N/A (This symbol is a DHCP field, not an option.)	`BootSrvA`	The IP address of the server with the initial boot file (either the booter or JavaOS). See Table 8-6 for more information.
IP Address Lease Time (51)	`LeaseTim`	The duration of the IP address lease. A value of -1 indicates an infinite lease. After this period of time (expressed in seconds) has expired without being renewed, JavaOS shuts down the networking port.
Subnet Mask (1)	`Subnet`	The subnet mask.
Time Server (4)	`Timeserv`	The IP address of a server supporting the RFC 868 time port.
Domain Name Server (6)	`DNSserv`	The IP addresses of one or more DNS servers. JavaOS queries additional DNS servers if the primary server fails to respond.
DNS Domain Name (40)	`DNSdmain`	The DNS domain name.

The options DHCP Message Type (53) and Server Identifier (54) are also required in every DHCP packet. However, these options are provided automatically by the DHCP server and do not need to be specified in dhcptab.