Switch/Router Layer 2/Layer 3 Connectivity:
Must support 1 802.1Q (Dot1Q) tag or two Tag 802.1Q (QinQ) tag encapsulation
Ethertype = 0x8100
Must add the outer VLAN tag (STAG) based on the VLAN ID specified by Microsoft - applicable only on QinQ
Must support multiple BGP sessions (VLANs) per port and device
IPv4 and IPv6 connectivity. For IPv6 no additional sub-interface will be created. IPv6 address will be added to existing sub-interface.
Optional: Bidirectional Forwarding Detection (BFD) support, which is configured by default on all Private Peerings on ExpressRoute circuits