This Tutorial describes a general architecture for IPv6 over NBMA networks. The IPv6 over NBMA architecture allows conventional
host-side operation of the IPv6 Neighbor Discovery protocol , while also supporting the establishment of 'shortcut' NBMA forwarding
paths (when dynamically signaled NBMA links are available).
The IPv6 "Link" is generalized to "Logical Link" in an analagous manner to the IPv4 "Logical IP Subnet".
The MARS protocol is augmented and used to provide relatively efficient intra Logical Link multicasting of IPv6 packets,
and distribution of Discovery messages.
Shortcut NBMA level paths are supported either through router based flow detection, or host originated explicit requests.
Neighbor Discovery is used without modification for all intra-LL control (including the initiation of NBMA shortcut discovery).
Router to router NHRP is used to obtain the IPv6/NBMA address mappings for shortcut targets outside a source's Logical Link.