Netra j 2.0 Administrator's Guide

Optional DHCP Options

Table 8-4 lists the DHCP options that can be interpreted by the DHCP client during the JavaStation boot sequence but are not necessarily required for the boot sequence.

Table 8-4 Optional DHCP Options for Booting JavaStation computers

DHCP Option Name (Number)  

Symbol Name in Solaris dhcptab File

Definition  

Bootfile Name (67)  

Bootfile

The path name of the initial boot file, which can be a "booter" file or JavaOS. The path name is assumed to be relative to the TFTP root directory.  

If this option is not provided, the name of the booter is assumed to be the same as the Client Class Identifier shown in Table 8-5 and is assumed to be in the TFTP root directory. See Table 8-6 for more information.

Root Path (17)  

Rootpath

The NFS-exported directory containing the JavaOS image. This option is used by the booter to locate JavaOS and by JavaOS to locate a newer image to update the flash. This option is required if you are using the booter method or if flash update is enabled. See Table 8-6 for more information.

Broadcast Address (28)  

Broadcst

The network broadcast address.  

Router (3) 

Router

The IP address of the router to be used by the JavaStation clients. If not given, JavaOS uses router discovery to broadcast for a router.  

N/A (Solaris-specific flag) 

LeaseNeg

A boolean flag which by its presence tells the DHCP server to renew the leases of clients requesting IP address lease renewal.  

NIS Servers (41) 

NISservs

If not given, JavaOS broadcasts looking for NIS servers. (This only works if the NIS server is on the same subnet.) 

NIS Domain Name (40) 

NISdmain

The NIS domain name. 

Vendor-Specific Options (43) 

Symbol names are defined by the user. By convention, use JOScmd1-4 and JOSchksm

A list of vendor-specific options. See "Vendor-Specific Options".

See "Sample dhcptab File " for examples of how these options are set in dhcptab.