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

Plan Your IPv6 Implementation
HP NonStop TCP/IPv6 Configuration and Management Manual—524523-008
4-3
Develop an IPv6 Implementation Plan
Maximize the Benefit of the NonStop TCP/IPv6 Architecture to understand how to
scale your applications, see Round-Robin Filtering on page 2-7.
Develop an IPv6 Implementation Plan
This subsection provides three scenarios of ways to gradually implement IPv6 in your
environment. The scenarios, in order of increasing complexity are:
•
Intranet Scenario
•
Intranet-to-Internet Scenario on page 4-5
•
Intranet-to-Internet-to-Intranet Scenario on page 4-6
Intranet Scenario
In this scenario, you deploy IPv6 hosts on a small subnet in your network. These hosts
communicate with each other using link-local addresses. If you add an IPv6 router to
the subnet and advertise an address prefix, each IPv6 host autoconfigures a global
IPv6 address and uses that address to communicate with other IPv6 hosts.
As you become more experienced with using IPv6, you can add an IPv6 host or hosts
on other subnets in your network. Communications between IPv6 hosts on different
subnets is accomplished using configured router-to-host tunnels and host-to-router
tunnels. The existing IPv4 routing infrastructure is used to get the packets end-to-end.
Figure 4-1 on page 4-4 shows an intranet scenario in which a corporation has three
departments in a local geographic area. Department A has deployed v4/v6 hosts and a
v4/v6 router. Departments B and C have deployed only one v4/v6 host each, with the
majority being v4 hosts.
To communicate with Host F, native IPv6 traffic is routed from Host A to Host F.