Hey Paul, Whats the eoip running over? (and its MTU) I'd be inclined to suggest MPLS setup for something like this if your network permits. Depending on what you have to work with you could achieve it in a few different ways. Cheers, RJ -----Original Message----- From: Public [mailto:public-bounces@talk.mikrotik.com.au] On Behalf Of Paul Julian Sent: Wednesday, 27 August 2014 2:09 PM To: public@talk.mikrotik.com.au Subject: [MT-AU Public] VLAN Injection..... Hi guys, hoping somebody could suggest an option here. We have a customer that we are doing a trunk for which goes from their office to our DC and then to them in that DC. It looks like: Local Site Data Centre Ether1 -> bridge -> EOIP Tunnel -> bridge ->Ether1 This has been setup this way so that they can just push whatever they want through the tunnel, which is basically 4 vlans, so with this design they should be able to send and receive tagged traffic between the two Ethernet ports without an issue. The problem we have is that we now need to supply an additional vlan to the DC end of the link, but because it's a layer 2 trunk I am not sure of the best way to approach this. I have thought of putting a vlan on the physical interface and another on the bridge interface and setting up a /30 between those two vlan interfaces but to be honest I don't know if that will actually work, has anybody experienced this before and have any suggestions before I just try it ? Basically we need to provide them a layer 3 connection as well as the layer two connection but into the same physical interface at the DC. Thanks Paul _______________________________________________ Public mailing list Public@talk.mikrotik.com.au http://talk.mikrotik.com.au/mailman/listinfo/public_talk.mikrotik.com.au