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    Introducing Netgate Nexus: Multi-Instance Management at Your Fingertips.

    DHCP not working over VLAN/Trunk

    Scheduled Pinned Locked Moved DHCP and DNS
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    • S Offline
      Spider_VL
      last edited by Spider_VL

      Firstly I was debating if this should go to DHCP section or VLAN/Trunk section (so pelase move if incorrect) but decided its DHCP as explained later.

      My setup:
      PfSense CE 2.8.1-Release amd64 (4 interfaces):
      If 1: WAN (to ISP)
      If 2: LAN (no IP)
      If 3 and 4: LAGG0 (LACP)
      VLAN10 on LAGG0 (no IP)
      VLAN20 on LAGG0 (192.168.66.1/24)
      VLAN30 on LAGG0 (192.168.96.1/24)
      Bridge0: LAN,VLAN10 (192.168.69.1/24)

      DHCP is set up on Bridge0, VLAN20, VLAN30 all set to use Kea DHCP.

      Switch configuration:
      port 1-4 Untagged vlan 10
      port 5-8 Untagged vlan 20
      port 9-10 Untagged vlan 30
      port 11-12 LACP LAG: Tagged VLANS 10,20,30
      Switch have VLAN10 with IP 192.168.69.5

      a PC plugged in to LAN port with Static DHCP reservation 192.168.69.69 works fine (without static was working fine too). DHCP scope is 192.168.69.100-250

      a Laptop plugged in to switch port 1 does not get DHCP IP allocation. If I configure laptop with static IP address e.g: 192.168.69.50 I can ping GW, and PC just fine.
      PC can ping Switch, GW and laptop with static IP configured fine.

      Just not getting any DHCP.

      Similar for plugging laptop in switch ports from Vlan 20 or 30 - DHCP does not work but manually setting static IP on laptop works.

      First I though itc the bridge but since VLAN20 and 30 does not work neither Im bit lost.

      Any tips what to look next?

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      • S Offline
        Spider_VL @Spider_VL
        last edited by

        3 or so hours later..... turns out that me using my corporate laptop as a test was the issue. I guess I was voulenteered to be in some test group for new NAC features :) Using any other device works fine (apart form missus screaming for disconnecting her mini pc for testing :D )

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