<!DOCTYPE html><html><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8" /></head><body><div data-crea="font-wrapper" style="font-family: Tahoma; font-size: 13px; direction: ltr"><div>I want to create DHCPv4 option 191 for a certain subnet.</div><div><br></div><div>This option allows Extreme Networks WiNG wireless access points to discover their WLAN controller at the IP address specified in option 191. <br></div><div><br></div><div>The same option also gives the access point information about a proprietary protocol called MINT.</div><div><br></div><div>According to Extreme Networks, the format of the option is as follows:</div><div><br></div><div>pool1=1.2.3.4;level=1</div><div><br></div><div>(from <a href="https://gtacknowledge.extremenetworks.com/articles/Q_A/What-is-syntax-for-DHCP-option-191-allowing-WING-devices-to-automatically-adopt" style="cursor: inherit;">https://gtacknowledge.extremenetworks.com/articles/Q_A/What-is-syntax-for-DHCP-option-191-allowing-WING-devices-to-automatically-adopt</a>)</div><div><br></div><div>That's it; I need to give this to DHCP clients as a simple ascii text string but I can't find a piece of documentation which tells me how to do this. My attempts at configuring it always end up with an error.</div><div><br></div><div>This is what I currently have:</div><div><br></div><div>"subnet4": [<br> {<br> "subnet": "192.168.2.0/24",<br> "option-data": [<br> {<br> "name": "AP-option",<br> "code": 191,<br> "data": "pool1=192.168.2.249;level=1"<br> }</div><div> ],...</div><div> }<br></div><div><br></div><div>I'd be grateful for any help about how I can configure this.</div><div><br></div><div>--ChrisSW.<br></div><div></div></div></body></html>