The video walks you through configuration of Intra-Site Automatic Tunnel Addressing Protocol (ISATAP) point-to-multipoint tunnel on Cisco router to transport IPv6 traffic over IPv4 network among multiple IPv6 sites. ISATAP tunnel work similarly to the IPv4-Compatible tunnel with the IPv4 tunnel destination embedded in the next-hop IP. Unlike other tunnelling technologies, ISATAP supports Router Advertisement over the tunnel allowing dual-stack hosts to connect directly to the default router. We will look at two ways of default router discovery: manual and DNS. Packet analysis on Wireshark will be performed to help us gain better understanding of the encapsulation and packet structure.
