TCP/IPv6 Configuration and Management Manual (G06.29+, H06.03+, J06.03+)

Plan Your IPv6 Implementation
HP NonStop TCP/IPv6 Configuration and Management Manual—524523-012
4-6
Intranet-to-Internet-to-Intranet Scenario
To communicate with the 6bone, 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 the 6bone point of entry. The point of entry router decapsulates the IPv4 packet and
routes the IPv6 packet to its destination.
Intranet-to-Internet-to-Intranet Scenario
In this scenario, you add additional v4/v6 routers on remote subnets and connect the
two of them through the Internet to create a virtual private network (VPN). An example
of this use might be for a global corporation that has manufacturing in one country and
a design center in another country. The IPv6 hosts communicate with the v4/v6 routers
Figure 4-2. Deploying IPv6 in an Intranet-to-Internet Scenario
6Bone
Point of
Entry
VST139.vsd
Department A
v4/v6 v4/v6 v4/v6
Router A v4/v6
Host A Host B
Host C
Department B
Router B
v4/v6
Host D Host E
Host F
v4
v4
v4/v6
Router C v4
Department C
Host G Host H
Host I
v4
v4
v4/v6
Router D v4
Host J
Internet