CRS326 DHCP over VLAN Trunk not working

SwOS
1

I have an OPNsense router with several tagged VLANs configured with DHCP over a LACP interface. One of this VLANs with ID 17 is meant to be used for IT management.

I don’t manage to get DHCP working for my CRS326 with SWOS over this trunk connection.

The trunk is working and if I use static connection my VLANs are working and I can also access the switch, but DHCP and internet is not working for it.

I added the two ports of course to VLAN 17 in the VLANS tab. I tried out several configurations in the VLAN tab. Enabled, strict, optional. Any, tagged only. Default set to 1, which is not configured, 17.

If I connect the switch to another port that is not configured at all and to another interface on the router dhcp works.

Can anyone help me?

2

What SwitchOS version?

I just looked at my one CRS326 (running SwitchOS version 2.12) and it is configured for static IP, but I can do a test without too much difficulty. The only connection to that switch from the rest of my network is via one VLAN trunk..

3

Thanks for the Feedback. I found the solution just some minutes ago.

One has to set under System. The allow from VLAN field to the desired management VLAN ID.

After I set this, I directly got an IP via DHCP.

The documentation states that this is only for access, but it has definitely an influence on the switches traffic itself. I think the documentation should be updated!