DHCP Issues

Daniel_Hyde

Hi,

I have two 8200's configured for High Availability but I'm coming across a strange issue.
It appears both devices are giving out DHCP leases, I was under the impression that only the master should do this.
Have I configured something wrong?

Thanks
Dan

viragomann

@Daniel_Hyde
Did you specify the "Failover peer IP"?

Daniel_Hyde

@viragomann

Thanks for the reply, where would I find that?
I can only find: pfsync Synchronize Peer IP

Thanks
Dan

viragomann

@Daniel_Hyde
In the DHCP server settings.

Daniel_Hyde

@viragomann

Thanks but I don't have that option.

Thanks
Dan

viragomann

@Daniel_Hyde
Services > DHCP Server > <interface_name>
?

Do you even have any issues with DHCP leases?
That both hand out leases is a normal behavior, but they should exchange lease information, when this is set correctly (on the primary) and System > High Availability Sync > Select options to sync > DHCP Server settings is checked.

Daniel_Hyde

@viragomann

Yes, the Ubiquiti cloud controller for the Wi-Fi keeps reporting multiple devices have the same IP.
Also some users cannot connect to the Wi-Fi

Thanks
Dan

Daniel_Hyde

@viragomann

I found the setting, I changed DHCP from KEA to ISC and the setting was there.

Thanks
Dan

viragomann

@Daniel_Hyde
Yeah, I think I've read here, that KEA is not compatible with CARP at this time. Would be worth to mention, that you use it.

Daniel_Hyde

@viragomann

I didn't know it was in use, I only found it was a thing when I saw about it on here when looking at the DHCP section.

Thanks
Dan

Daniel_Hyde

@viragomann

Should I put the IP of the secondary pfSense in there?

Thanks
Dan

viragomann

@Daniel_Hyde
Yes, as the hint there is mentioning.
This setting needs only to be made on the primary.