66
Appendix A
Tip
The thin client conforms to both RFC-compliant DHCP servers (RFC
numbers 2131 and 2132) and RFC-noncompliant Microsoft servers (which
NULL terminate strings sent to the thin client). The thin client supports both
infinite leases and leases that expire (per RFC 2131 and others).
Tip
Not all options in the range 128-254 are strings. Options 186, 190, and 192
are employed for all Wyse products that use WDM. Their format and content
are determined by the WDM product.
186
Wyse Device Manager
(WDM) server list
(formerly know as
Rapport)
Optional binary IP addresses of WDM. This option
can specify up to two Wyse Device Manager
servers. If two are specified, at boot time the thin
client will attempt to check-in to the first server. If it
cannot contact the first server it will try to check-in
to the second server. Wyse ThinOS version 4.3
and later only.
187
WDM server port
(formerly know as
Rapport)
Optional number. Byte, word, or two-bytes array.
NOTE:
The value of this option tag, when not
embedded in Vendor Class Specific Information
option, is interpreted in reverse order when it is
sent as 2 bytes (for example, the value of 0x0050
was interpreted as 0x5000). This option tag was
used by old Wyse ThinOS releases. New Wyse
ThinOS releases still accept this option tag for
backward compatibility.
188
Virtual Desktop Broker
port
Optional string.
190
WDM secure port
(formerly know as
Rapport)
Optional number. Word, or two-bytes array.
Specifies to use HTTPS to communicate with
WDM instead of HTTP.
192
WDM server port
(formerly know as
Rapport)
Optional number. Word, or two-bytes array.
NOTE:
The value of this option tag represents the
same information as option tag 187. The
difference is that Wyse ThinOS interprets the
value of this option tag in correct order (for
example, the value of 0x0050 is interpreted as
0x0050). If the DHCP server provides both option
tag 192 and 187, option tag 192 takes
precedence.
Table 5 DHCP Options, Continued
Option
Description
Notes