Add Scope 156 in DHCP | Blog | Hotmodz

Add Scope 156 in DHCP

Step 1: Create Option 156 in Your Windows DHCP server

a. Open the DHCP tool in Windows - Start>Administrative Tools>DHCP
b. Add all of the Windows DHCP servers to the manager - Right-click DHCP>Add Server... Select This authorized DHCP server and add all the servers by clicking the first, pressing and holding the Shift key and clicking the last server. Click OK.
c. Click the "+" sign next to the first DHCP server in the left-most pane to expand the options. Right-click IPv4 and select Set Predefined Options.
d. Click Add and in the Name field, type Shoretel (or whatever you want to name the option).
e. Set the Data type to String.
f. Under Code, type 156 and add a description if desired.
g. Click OK twice.

Step 2: Add Option 156 to Your Windows DHCP Server's DHCP scope

a. Click the "+" sign next to IPv4, then next to Scope [x.x.x.x] (where x.x.x.x is your scope subnet and name).
b. Right-click Scope Options and select Configure Options.
c. On the General tab, scroll down to option 156 and check the box next to it to enable it.
d. Under the String Value,enter any/all of the following options: ftpservers=x.x.x.x, country=1, language=1, vlanid=n (where x.x.x.x is your ShoreWare Headquarters server's IP address and n is the VLAN for your ShoreTel IP phones).
e. Click OK.