RegiBoy Lv5Posted 15 Sep 2023 11:10
  
No its not possible if the interfaces are routed but it is possible if the interfaces are Layer 2 only.
MTR Lv2Posted 17 Sep 2023 04:17
  
it is possible to have two DHCP servers on the same physical network, each serving different IP ranges, as long as they are on separate subnets.

In your scenario:

DHCP Server 1 (ETH2):

IP Range: 192.168.1.1 - 192.168.1.100
Netmask: 255.255.255.0
Gateway: 192.168.1.254
DHCP Server 2 (AP):

IP Range: 192.168.1.101 - 192.168.1.254
This setup can work, but there are some considerations:

Avoid IP Range Overlap: Make sure that the two DHCP servers don't allocate the same IP address to different devices. In your case, the first DHCP server allocates IPs from 192.168.1.1 to 192.168.1.100, so DHCP Server 2 should start assigning IPs from 192.168.1.101 and above to avoid conflicts.

Configure the AP:

Ensure that the Access Point (AP) is configured to use DHCP for IP address assignment. You'll want to set it to get its IP address dynamically from the first DHCP server on ETH2.
Avoid DHCP Relay Conflicts: If your network has multiple routers or Layer 3 devices, make sure that DHCP Relay or Helper addresses are properly configured. This ensures that DHCP requests from one subnet can reach the DHCP server on another subnet.

Verify Routing: Confirm that the routing on your network is set up correctly so that devices connected to the AP can communicate with the DHCP server on ETH2.

Consider VLANs: If you're using VLANs, ensure that the ports connecting the AP and ETH2 are configured to carry the appropriate VLANs.

DHCP Lease Times: Consider setting appropriate lease times for the DHCP assignments to ensure that IP addresses are released back to the pool after a reasonable amount of time.

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