Hello

I wanted to ask if the LtAP LTE (RBLtAP-2HnD) supports VLANs (RouterOS 6 & 7beta)?
(Wanted to use different Vlans for each of the LTE modems [2])

I'm asking this, because I read on the Routerboard forum that the MT7621A chip & RouterOS have some issues with vlans:
viewtopic.php?p=740164#p740164

https://wiki.mikrotik.com/wiki/Manual:S ... troduction

Now since the RBLtAP-2HnD board actually doesn't make use of the internal LAN switch of the MT7621A, it seems plausible for me that vlan may work, but I prefer having confirmation from Mikrotik before purchasing one.

Thank you

Every ROS device supports VLANs.

The device performance depends on the way VLANs are configured:

• handful of devices have full HW offload supported even if VLANs are configured in the new bridge vlan-filtering way.
  This is the case for CRS3xx devices
• majority of devices, which feature switch chips, can have VLANs configured in two distinct ways. If they are configured the old way, using switch-chip specific commands, then they support HW offload for packets flowing between ports of the same switch chip (the rest is handled by CPU). If these devices are configured the new way, then all traffic is handled by CPU which can severely affect the device performance.
  This is the case for most RB devices with switch-chips except devices with Mediatek or Realtek switch-chips.
• handful of devices which don't feature switch chips, have to do VLANs by CPU. The performance hit (compared to untagged config) is neglectable as they move packets between interfaces through CPU anyway.
  This includes all CCR devices (except an old 1036).

Acryli

(Wanted to use different Vlans for each of the LTE modems [2])

Sure, as @mkx say, you can do that. This is normal. I use 3x VLANs at SXTR on bonding interface.

• vlan1 -> management
• vlan2 -> passthrough for sim a
• vlan3 -> passthrough for sim b

.

Every ROS device supports VLANs.

mkx, You are expert. I like read your answers.

Thank you for your answers