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-1when 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

 

 

 

Administration Guide for Cisco Virtualization Experience Client 6215 Firmware Release 8.6

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Cisco Systems CVXC6215SK9 manual Using Dhcp, Option Description