DHCP not working consistently
It appears there is a DHCP server running on both the switch and the router. I do not understand how to manage this configuration from the Omada controller to get the correct network behavior.
My LAN interface (192.168.10.1/24) is configured with a DHCP range of 100-250, custom DNS servers, and 20 reserved IP address. These do not always work. Some of the machines will come up with an IP address that's not in the pool, not a fixed value, have wrong DNS servers, and using the wrong lease time. Some machines are working as expected.
I run a dhcping
sudo dhcping -s 255.255.255.255 -r -v
Got answer from: 192.168.10.3
received from 192.168.10.3, expected from 255.255.255.255
Got answer from: 192.168.10.1
received from 192.168.10.1, expected from 255.255.255.255
no answer
Both the switch (192.168.10.3) and the router (192.168.10.1) responded.
Using wireshark I see that both the swtich and the router are responding to DHCP requests. The switch data is wrong and the router data is correct.
When I look at these packets, the switch response is wrong data. The router response is correct data. Then in the last packet from the router is a message saying wrong server ID.
Router : ER605 V2.0 2.2.4
Switch : SG2210MP v4.20 4.20.1
AP : EAP660 HD(US) v1.0 1.2.10
Controller : OC200 2.0 5.6.4
Controller Version : 5.6.4
Controller Firmware : 2.6.1 Build 20220921 Rel.35903