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Configure DHCP Server on the LAGG interface

Scheduled Pinned Locked Moved DHCP and DNS
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  • T
    thienthienan
    last edited by Apr 15, 2020, 4:46 PM

    Hi everybody
    I am using pfsense version 2.4.5.
    My hardware device has 4 interfaces.
    Interface 1, interface 2 I use as a WAN port (see picture 1).

    1.png

    Interface 3, interface 4 uses LAGG LACP protocol, I named LAGG0 (see images 2, 3).
    2.png
    3.png

    I set the IP for the LAGG0 port to be 10.100.101.1 and give them a DHCP Server. (see image 4).

    4.png

    I connected the LAN port of a PC to Interface 3, or Interface 4 did not receive DHCP.

    Please help me do that.

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    • D
      dotdash
      last edited by dotdash Apr 15, 2020, 5:34 PM Apr 15, 2020, 5:34 PM

      Don't connect a pc directly to the interfaces. If you are using LACP, you need to have the ports connected to a switch that is properly configured with an LACP trunk.

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      • T
        thienthienan
        last edited by Apr 16, 2020, 12:14 AM

        Thanks @dotdash !

        LAGG uses the LACP protocol, which is both a aggregation of bandwidth and a backup of one of the two disconnected lines.

        So I think the LAGG interface itself is similar to a logical interface, and also provides DHCP as usual.

        I have tried it successfully on version 2.1.5 but other hardware devices, the network card I use of intel.

        I don't know if it was the hardware failure that caused me to make such an error.

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        • D
          dotdash
          last edited by dotdash Apr 16, 2020, 1:43 PM Apr 16, 2020, 1:43 PM

          LAGG, as in your screenshots, can use LACP or other protocols. LACP requires a device, usually a switch, on the other end of the link configured with LACP. DHCP will work fine if things are configured properly.

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          • T
            thienthienan
            last edited by Apr 16, 2020, 11:59 PM

            Thanks for @dotdash support.

            Best regards !

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