Hi Pascal,
> I have the intension to secure EoMPLS connetions with MACsec.
I'm not sure that MACsec is done to secure the MPLS connection.
MACsec can secure the client signal of MAC.
> But this information is necessary for the provider.
The provider can aggregate MACsec frames in a S-VLAN frame, as any non tagged frame. It depends on the SLA.
Best regards,
Michel