Vlan and DHCP



  • Hi,

    I have the latest stable pfsense: 1.2.3

    I have 6 physical nics

    sk0 for wan ( public ips ) XXX.XXX.XXX.XXX
    rl0 for lan 192.168.1.1
    nfe0 for anything i want 10.0.0.1
    re0 for vlans 192.168.1.2
    vr0 for wireless 172.16.0.1
    re1 for ADSL DHCP from modem

    1 have 9 vlans starting by tag 2 to 10

    192.168.2.0/24
    192.168.3.0/24
    192.168.4.0/24
    192.168.5.0/24
    192.168.6.0/24
    192.168.7.0/24
    192.168.8.0/24
    192.168.9.0/24
    192.168.10.0/24

    My SWITCH is: 3com Baseline 2250 plus with 50 ports

    I've just setup vlan at switch and put the vlan tags 2 to 10 acording ports i want and all i have tagged.

    All vlans have their own dhcp server, but if i plug a cable for example at port 25 that correspond vlan 9 with sub net 192.168.9.0/24 i get ip 192.168.1.245!!!

    What i have to do?



  • Here is some log…

    Feb 10 13:39:45 kernel: arp: 192.168.1.18 is on rl0 but got reply from 00:13:d4:8e:a0:57 on re0
    Feb 10 13:39:05 kernel: arp: 192.168.1.245 is on rl0 but got reply from 90:84:0d:e9:0a:f9 on re0
    Feb 10 13:37:09 kernel: arp: 192.168.1.18 is on rl0 but got reply from 00:13:d4:8e:a0:57 on re0
    Feb 10 13:34:55 kernel: arp: 192.168.1.1 is on lo0 but got reply from 00:08:54:26:af:83 on re0
    Feb 10 13:33:28 kernel: arp: 192.168.1.18 is on rl0 but got reply from 00:13:d4:8e:a0:57 on re0
    Feb 10 13:33:12 kernel: arp: 192.168.1.1 is on lo0 but got reply from 00:08:54:26:af:83 on re0
    Feb 10 13:33:12 kernel: arp: 192.168.1.1 is on lo0 but got reply from 00:08:54:26:af:83 on re0



  • @wilbertjoosen:

    rl0 for lan 192.168.1.1
    re0 for vlans 192.168.1.2

    This isn't right: you need separate subnets for each interface. Hence in further discussion it would be helpful if you also showed the network mask specified on the interface so we don't have to guess it.

    @wilbertjoosen:

    Here is some log…

    Feb 10 13:39:45 kernel: arp: 192.168.1.18 is on rl0 but got reply from 00:13:d4:8e:a0:57 on re0
    Feb 10 13:39:05 kernel: arp: 192.168.1.245 is on rl0 but got reply from 90:84:0d:e9:0a:f9 on re0

    You have an invalid configuration: some sort of link between the subnet attached to rl0 and the subnet attached to re0.

    If I recall correctly, someone in these forums has reported a problem with a 3Com switch and VLANs. If rl0 and re0 are connected to the switch maybe you are seeing a similar problem.



  • ok, so i have to disconect for example re0, and use rl0 for lan and vlans?

    ex:

    192.168.1.1 for lan

    vlans

    192.168.2.1
    192.168.3.1
    192.168.4.1
    192.168.5.1
    192.168.6.1
    192.168.7.1
    192.168.8.1
    192.168.9.1
    192.168.10.1

    all vlans and lan i´m using /24

    Thanks



  • More onde question, what port i have to connect the lan interface (use for vlans)? it must be tagged or not?

    Thanks



  • Hello all,

    Good news, i've just solve my problems:

    At switch, on port that pfsense is plugued, i set all vlan's ids, and this port must be tagged, and the others untagged.

    Thanks for all


Log in to reply