+-----------------------------------------+
               |  RD (8 octets)                          |
               +-----------------------------------------+
               |  Ethernet Segment Identifier (10 octets)|
               +-----------------------------------------+
               |  Ethernet Tag ID (4 octets)             |
               +-----------------------------------------+
               |  IP Prefix Length (1 octet)             |
               +-----------------------------------------+
               |  IP Prefix (4 or 16 octets)             |
               +-----------------------------------------+
               |  GW IP Address (4 or 16 octets)         |
               +-----------------------------------------+
               |  MPLS Label (3 octets)                  |
               +-----------------------------------------+