TCP/IPv6 Configuration and Management Manual (G06.24+)

Plan Your IPv6 Implementation
HP NonStop TCP/IPv6 Configuration and Management Manual—524523-008
4-5
Intranet-to-Internet Scenario
IPv4 packet and routes the IPv6 packet to Host A. (For hosts, the host-to-router tunnel
is efficient because it saves the Host A, Host B, and Host C administrators from having
to create individual host-to-host tunnels for each destination host.)
Intranet-to-Internet Scenario
In this scenario, you add a v4/v6 router to your network and use it to communicate with
the global Internet. The IPv6 hosts communicate with the v4/v6 router using IPv6. For
IPv6 traffic to v4/v6 hosts on the 6bone or the Internet, you configure router-to-host
tunnels. Figure 4-2 on page 4-6 shows a scenario in which the corporation described in
the intranet scenario adds a connection from Router A to the Internet. Potential
destination nodes are, in turn, connected to the Internet.
To communicate with Host J, Host A sends the IPv6 packet to Router A. Router A
encapsulates the IPv6 packet and sends the IPv4 packet over a router-to-host tunnel
to Host J, which decapsulates the IPv4 packet.