Important note about SSL VPN compatibility for 20.0 MR1 with EoL SFOS versions and UTM9 OS. Learn more in the release notes.

DHCP reservation

I have a few subnets, and all of them have a dhcp server/pool range for specific range. A few of them have a IP reservation (bind mac to IP address).
The error/strange behavior I get is if the MAC address is in list for reservation in any of the dhcp pools it wont get IP address from other subnet.
To bi more specific:
Let say I have a network address of interface 1 (LAN) 192.168.0.1 and dhcp pool in range between 100 and 200 and IP (MAC address) reservation to 192.168.0.25
Interface 5 (LAN) has IP address of 172.16.16.1 and dhcp pool in range from 100 to 200 and no MAC/IP reservations.
If I put my pc in network 192.168.0/24 (interface 1) everything works fine I get a reserved IP (192.168.0.25).

But if i put my PC in interface 5 (subnet 172.16.16.0/24) I dont get an IP address if this MAC address is writen in any of the DHCP reservations. If I delete MAC address (delete reservation) from DHCP pool 192.168.0.1 (the only reservation to my PC mac address) then again everything is working without problems.
I instantly get a new IP address from that range (172.16.6.100 - 200). I already tried to change setting for dhcp (sy dhcp conf-generation-method) to new but nothing happends.

This problem exist in SFOS 21.0.0 GA-Build169 and in SFOS 20.0.2 MR-2-Build378

Best regards,

  Robert



Edited TAGs
[edited by: Erick Jan at 12:15 AM (GMT -8) on 11 Nov 2024]