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Administration Guide for Cisco Virtualization Experience Client 6215 Firmware Release 8.6
Appendix A Central Configuration Using File Server
How to Set Up Central Configuration Using a File Server
Using DHCP
With the DHCP method of configuring the file server location (recommended), the thin clients obtain
information about the server and root directory using the following DHCP options:
• 161—Specifies the server
• 162—Specifies the root path to the server (ftp/http/https)
–
If no root path is defined, /wyse is assumed.
–
If a root path is defined, the additional path is appended to the URL supplied by Option 161.
• 184—(Optional) Specifies the server username (for the server specified in Option 161)
• 185—(Optional) Specifies the server password (for the server specified in Option 161.
Tip The thin clients perform the check-in for firmware updates early in the boot process. For that reason, a
unit may not receive changes in DHCP information until it completes a full boot. However, you can avoid
this scenario by forcing a renewing of the DHCP lease, which ensures that the unit has the latest
file-server location before the next firmware check.
Use the guidelines shown in Table A-1 when you create and add the DHCP options you need.
Table A-1 DHCP Option Tags
Option Description Notes
001 Client identifier Always sent
002 Time Offset Optional
003 Router Optional but recommended. It is not required unless the appliance
must interact with servers on a different subnet.
006 Domain Name Server (DNS) Optional but recommended
012 Host Name/Terminal Name Optional string. The hostname or terminal name to be set.
015 Domain Name Optional but recommended. See Option 6.
028 Broadcast Address Optional
044 WINS servers IP Address Optional
051 Lease Time Optional but recommended
052 Option Overload Optional
053 DHCP Message Type Recommended
054 DHCP Server IP Address Recommended
055 Parameter Request List Sent by appliance
057 Maximum DHCP Message Size Optional (always sent by appliance)
058 T1 (renew) Time Optional but recommended
059 T2 (rebind) Time Optional but recommended
061 Client identifier Always sent