PfSense and Layer 3 Switch Doing Inter VLAN Routing

  • I have pfSense 2.1 in front of a Cisco 3550 layer 3 switch. The layer 3 switch is currently doing the inter vlan routing. The pfSense LAN interface is and the switch interface is I am able to ping the pfSense LAN interface from the switch but when I plug a workstation into FastEthernet0/48 it is unable to pull an ip address from the DHCP server on pfsense. I have not created any vlans on pfSense, just a WAN and LAN interface. Not sure if I need to add static routes on the pfsense box. Any help would be greatly appreciated. Thanks!

    On the switch:

    interface FastEthernet0/1
    no switchport
    ip address

    interface FastEthernet0/48
    switchport access vlan 100
    switchport mode access
    spanning-tree portfast

    VLAN 100
    ip address
    ip helper-address

    VLAN 105
    ip adress
    ip helper-address

    router ospf 1
    network area 0
    network area 0

    ip route

  • Hmmm. I think pfSense cannot be the DHCP for this particular setup. For the LAN interface, DHCP server is set to serve only the network. No other possible way to have pfSense hand out ip addresses from the range unless I create VLAN 100 on pfsense but that messes everything up.

  • I'm doing a fix fot that. Take a look on bounty topic.

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