CRS326-24S+2Q+RM VLANs not working

Hello,

we have 4x CRS326-24S+2Q+RM Swiches running on SwOS.
With one of them we can use the VLAN function with our HP5406 Modular Switch - connected with Fiber without problems.
The other 3 CRS326 give me no link. There is no log at the Mikrotik SwOS, the HP Switch also shows no errors.

I copied the Configuration from the working CRS326 to the non-working CRS326 but it still does not work.
Normal switching without VLANs works great - but we need this working.

Why is there no log ? Maybe it would help us and also Mikrotik supporting these Isues …

We have a small CRS305 we used to test our needs before buying the bigger CRS326s and this CRS305 works without problems…

A diagram of the network and the configuration used would help us understand a bit better.
Also, what do you mean they dont work ?

Ok , i will draw a diagram tomorrow.
I don’t get a connection via VLAN. No ping nothing. Very strange thing…
Only untagged , default VLAN works.