# ePMP Option 66 **URL:** https://community.cambiumnetworks.com/t/epmp-option-66/50222 **Category:** Available Now **Created:** [March 22, 2017, 3:32am UTC](https://community.cambiumnetworks.com/t/epmp-option-66/50222 "2017-03-22T03:32:53Z") **Posts on this page:** 11 **Page:** 1
### Author: ![dayas](https://d10gw3vjmzyp8.cloudfront.net/letter_avatar_proxy/v4/letter/d/e95f7d/32.png) [@dayas](https://community.cambiumnetworks.com/u/dayas) #### Post date: [March 22, 2017, 3:32am UTC](https://community.cambiumnetworks.com/t/epmp-option-66/50222/1 "2017-03-22T03:32:53Z")
It would be nice if the ePMP radios  could pull a config file from DHCP option 66 just like the PMP radios can. This would allow us to mass configure radios a lot easier as well as preconfigure (zero touch provision) radios for the field. ---
### Author: ![RayS](https://d10gw3vjmzyp8.cloudfront.net/user_avatar/community.cambiumnetworks.com/rays/32/11680_2.png) [@RayS](https://community.cambiumnetworks.com/u/RayS) #### Post date: [March 22, 2017, 11:24am UTC](https://community.cambiumnetworks.com/t/epmp-option-66/50222/2 "2017-03-22T11:24:50Z")
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### Author: ![Daniel\_Millar](https://d10gw3vjmzyp8.cloudfront.net/user_avatar/community.cambiumnetworks.com/daniel_millar/32/12214_2.png) [@Daniel\_Millar](https://community.cambiumnetworks.com/u/Daniel_Millar) #### Post date: [September 24, 2018, 4:03am UTC](https://community.cambiumnetworks.com/t/epmp-option-66/50222/3 "2018-09-24T04:03:11Z")
Hi, Has there been any progress made on using Option 66 with ePMP? ---
### Author: ![MattGorecki](https://d10gw3vjmzyp8.cloudfront.net/user_avatar/community.cambiumnetworks.com/mattgorecki/32/20339_2.png) [@MattGorecki](https://community.cambiumnetworks.com/u/MattGorecki) #### Post date: [November 6, 2020, 10:18pm UTC](https://community.cambiumnetworks.com/t/epmp-option-66/50222/4 "2020-11-06T22:18:36Z")
Is this still the case? Why is it listed in the config if it isn’t implemented? ---
### Author: ![Eric\_Ozrelic](https://d10gw3vjmzyp8.cloudfront.net/user_avatar/community.cambiumnetworks.com/eric_ozrelic/32/16188_2.png) [@Eric\_Ozrelic](https://community.cambiumnetworks.com/u/Eric_Ozrelic) #### Post date: [November 7, 2020, 3:48am UTC](https://community.cambiumnetworks.com/t/epmp-option-66/50222/5 "2020-11-07T03:48:44Z")
The option is there, but I’ve never used it. ![option 66](https://d1okf4ta8xniw3.cloudfront.net/original/3X/a/5/a58bd44cb4e063a02ee5f3690f618db0e982bc3d.jpeg) ---
### Author: ![MattGorecki](https://d10gw3vjmzyp8.cloudfront.net/user_avatar/community.cambiumnetworks.com/mattgorecki/32/20339_2.png) [@MattGorecki](https://community.cambiumnetworks.com/u/MattGorecki) #### Post date: [November 24, 2020, 5:38pm UTC](https://community.cambiumnetworks.com/t/epmp-option-66/50222/6 "2020-11-24T17:38:29Z")
It doesn’t do anything though. After hours of fighting it, I found something that said it’s only implemented in PMP, not ePMP radios. ---
### Author: ![kelmore](https://d10gw3vjmzyp8.cloudfront.net/letter_avatar_proxy/v4/letter/k/ee59a6/32.png) [@kelmore](https://community.cambiumnetworks.com/u/kelmore) #### Post date: [December 22, 2020, 6:44pm UTC](https://community.cambiumnetworks.com/t/epmp-option-66/50222/7 "2020-12-22T18:44:55Z")
Would love to see this too. cnMaestro has some auto-provisioning capabilities, but I don’t believe it can look up customer specific information, like naming the device after the customer. ---
### Author: ![Arakasi](https://d10gw3vjmzyp8.cloudfront.net/letter_avatar_proxy/v4/letter/a/d07c76/32.png) [@Arakasi](https://community.cambiumnetworks.com/u/Arakasi) #### Post date: [June 21, 2024, 9:54pm UTC](https://community.cambiumnetworks.com/t/epmp-option-66/50222/8 "2024-06-21T21:54:00Z")
I see the option on the new epmp4600, and would like to setup a golden config like we do for PMP450. does this work? If not, why is it showing in the UI? So far we haven’t gotten it to do anything… ---
### Author: ![James\_ATG](https://d10gw3vjmzyp8.cloudfront.net/letter_avatar_proxy/v4/letter/j/b9e5f3/32.png) [@James\_ATG](https://community.cambiumnetworks.com/u/James_ATG) #### Post date: [October 30, 2024, 10:12pm UTC](https://community.cambiumnetworks.com/t/epmp-option-66/50222/9 "2024-10-30T22:12:31Z")
Same here, it does nothing at all, more marketing fluff. Even the Ethernet port on the SM won’t query for a DHCP address to even use opt 66, which is hilarious since it’s supposed to be in bridged mode. ---
### Author: ![Arakasi](https://d10gw3vjmzyp8.cloudfront.net/letter_avatar_proxy/v4/letter/a/d07c76/32.png) [@Arakasi](https://community.cambiumnetworks.com/u/Arakasi) #### Post date: [January 23, 2025, 11:08pm UTC](https://community.cambiumnetworks.com/t/epmp-option-66/50222/10 "2025-01-23T23:08:20Z")
I was able to get them to confirm this as a bug. I haven’t heard when it will be fixed yet though… ---
### Author: ![Oleh\_Andriushchenko](https://d10gw3vjmzyp8.cloudfront.net/user_avatar/community.cambiumnetworks.com/oleh_andriushchenko/32/31518_2.png) [@Oleh\_Andriushchenko](https://community.cambiumnetworks.com/u/Oleh_Andriushchenko) #### Post date: [June 2, 2025, 9:43am UTC](https://community.cambiumnetworks.com/t/epmp-option-66/50222/11 "2025-06-02T09:43:00Z")
**Option 66 works as intended, but with some nuances.** For it to function properly, your DHCP server must be able to forcibly send this option to all clients, even if they do not explicitly request it. On **MikroTik** , starting from **RouterOS v7.1rc5** , it is possible to force DHCP options from the server side using the following command: ```auto ip/dhcp-server/option/set force=yes ``` On a **Linux server** using **dnsmasq** , use the `dhcp-option-force` directive: ```auto dhcp-option-force=option:tftp-server,"url/to/config.json" ``` Also, don’t forget to host your configuration file on an **HTTP** or **TFTP** server so that the device can download it.