DHCP option 43 on edgerouter 8 pro

[Ola Malmstrom]

Hi!

I am struggling to set up one of my Cisco access points 2802i-e-k running CAPWAP. I have two other 2802i-e-k9 both running ME. This works just fine. However I would like to manage the CAPWAP AP from the WLC user interface. However I just can't get it to connect to the WLC (the controller)

I have tried a number of things without success such as fixed IP address, with netmask 255.255.255.0, hard-coding the CAPWAP AP to reach out to both the primary and secondary WLC (the other two APs).

My last straw seems to be to define DHCP option 43 for the CAPWAP AP. This needs to be done on my Edgerouter 8 Pro,r unning the latest fw version. However, whatever I try, doesn't work.

Seems like I need to run the command "set service dhcp-server shared-network-name LAN-DHCP subnet 192.x.x.x/24 option 43" and then a hex string of some sort.

Can anyone managed to get the Option 43 correct on an edgerouter?

 

[microchip]

Have you asked on the Ubiquiti support forum?

 

[Ola Malmstrom]

I have searched there in vain....

 

[ColinTaylor]

... and then a hex string of some sort.

So is your problem that you don't know what the hex string is meant to be, or that you don't know the syntax of the command on the edgerouter?

 

[Ola Malmstrom]

I know the command and its syntax but I can't find any info on how to specify option 43 and the hex string correctly. The hex string itself should be F1:04:C0:A8:00:EA or some derivative thereof. F1:04 for a Cisco AP, C0:A8:00:EA for the controllers IP address. But.... the option 43 and the hex string can be written in many different ways. I have tried 13, using lower and upper case, ' and " as well as omitting the :. The response I get is always

The specified configuration node is not valid
Set failed

 

[Ola Malmstrom]

So.... maybe of interest here as well. Found an answer in the Ubiquiti Edgemax area.

Two commands are needed:

set service dhcp-server global-parameters 'option option43 code 43 = string;'

set service dhcp-server shared-network-name LAN-DHCP subnet 192.168.0.0/24 subnet-parameters 'option option43 F1:04:C0:A8:00:EA;'

Then commit and save

F1 indicates a Cisco AP
04 is the number of octets in the IP address of the controller.
C0:A8:00:EA is the IP address of the controller, 192.168.0.234