Trunking on vQFX

Dear Com !

When configuring two vQFX to communicate (layer 2) together I saw that trunking interface are not working. This is due to the vnic adaptor. The Intel PRO/1000 strip the 802.1Q trag. By default, only access port works with vQFX.

Doesn't any one manage to have a working trunking configuration with vQFX ?

I tried to change the adaptor type in vagrant configuration but it doesn't work. it seems JunOS has only the "Intel PRO/1000" drivers...

Driver not compatible with JunOS => once configured, I can't see the interface on the vQFX

            # Interconnect link between vqfx (xe-0/0/0)                                                                                                                                                        
            vqfx.vm.network 'private_network',
                auto_config: false,
                nic_type: 'Am79C973',
                virtualbox__intnet: "#{UUID}_vqfx_interconnect_nicA"

Drivers compatible but not working with 802.1Q

            # Interconnect link between vqfx (xe-0/0/1)                                                                                                                                                        
            vqfx.vm.network 'private_network',
                auto_config: false,
                nic_type: '82540EM',
                virtualbox__intnet: "#{UUID}_vqfx_interconnect_nicA"

Environnement info :

OS : CentOS Linux release 7.3.1611 (Core) (on Cisco UCS BLADE, not a VM)

VirtualBox : 5.1.22r115126

Vagrant : 1.9.5

BOX : vqfx10k-pfe-virtualbox-20160609.box / vqfx10k-re-virtualbox-15.1X53-D60.box

help ?

Regards

Salah