MPLS VPN Components3. New VPN-IPv4 address family
Route Distinguisher (RD)
- 64-bit attribute which effectively becomes a customer identifier
- VRF based (not VPN based)
- Two types of RD format:
- Type 0: <Type (2 bytes) | Adm field (2 bytes) | AN field (4 bytes)>
- Type 1: <Type (2 bytes) | Adm field (4 bytes) | AN field (2 bytes)>
VPN-IPv4 example (type 0): 12345:99:192.168.100.0/24