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VLAN over LAG on TZ570W

Hey @all.

I´m very new to sonicwall and i have a question / problem.

My Sonicwall TZ570W is attached to my sonicwall switch 14-48FPOE over the X2 interface.

I added VLANs and of course the DHCPs for the VLANs.

All seems to work.

Clients get IPs from the right VLAN DHCP.

After this, i added a static LAG for X2 Interface and added X3, X4, and X5 to the LAG.

On the switch side i added a static LAG to ports 1-4.

The connection works, but now VLAN not.

The client on the VLAN no longer gets an IP.

After searching, watching youtube videos and reading on sonicwall website for a some days, i found no solution.

Can someone please help me?

What i do wrong?

Thanks and greetings from Germany

Category: Entry Level Firewalls


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    TKWITSTKWITS Community Legend ✭✭✭✭✭

    Try creating the VLANs AFTER you create the LAG.

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    NikudaNikuda Newbie ✭

    I will try it.

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    NikudaNikuda Newbie ✭
    edited February 2023


    i tryed, but it doesn´t work.

    I did the following:

    1. On the firewall and switch, existing VLANs/DHCPs and LAG deleted

    2. Set up LAG in the firewall (X2-X5) and then in the switch (port 1-4).

    3. VLANs set up on both sides including DHCP on the firewall

    4. Assigned VLANs in the switch (LAG ports 1-4 to tagged) and port 25 to untagged for testing.

    Unfortunately, the client does not get an IP.

    Without LAG, the client gets an IP from the correct VLAN/DHCP without any problems.

    Doesn't LAG work with VLANs?

  • Options
    NikudaNikuda Newbie ✭
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    TKWITSTKWITS Community Legend ✭✭✭✭✭

    I am not familiar enough with Sonicwall Switches to have any direct guidance, but is there not a way to set the LAG to tag instead of the individual ports?

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    NikudaNikuda Newbie ✭

    That is the question. Do I have to mark every port with VLAN in a LAG or just the main port?

    I have tried both and neither worked.

    Without LAG, the VLAN works without any problems.

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    TKWITSTKWITS Community Legend ✭✭✭✭✭

    I would contact support for clarification.

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