So I have an RB2011UiAS with ...
interface bonded1 (MTU=1508, mode=802.3ad) with slaves ether1 + ether2 (MTU 1500, L2 MTU 1598)
I have a VLAN (MTU 1508) on bonded1 so I can push PPPoE traffic via the switch to my BT FTTC modem at MTU 1500 - this all works fine and I get full 1500 MTU to the internet.
However, I also need to push normal LAN traffic at 1500 MTU via the same bonded interface to my switch but cannot come up with an obvious way to do this. My initial thought was that I would use the bonded interface as the transport and just create another VLAN on bonded1 with MTU=1500 and set the VLAN tag=1 for access to the LAN but VLAN=1 simply does not work, is this a bug or by design?
Any ideas, I'm trying to avoid having to set up another bonded interface @ 1500 MTU and run two additional cables to the switches.