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Figure 9–3: Routing IPv6 Traffic from Host I to Host A
Host A Host B Host C
Host D Host E Host F
Host G Host H Host I
Department A
Department B
Department C
v4/v6 v4/v6 v4/v6
v4 v4 v4/v6
v4 v4 v4/v6
Router A
v4/v6
Router B
v4/v6
Router C
v4
VM-0952A-AI
9.3.2 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 9–4 illustrates a scenario in which the corporation described in the chapter
adds a connection from router A to the Internet. Potential destination nodes are in
turn connected to the Internet.
In Figure 9–4, 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.
IPv6 9–7
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