Avaya IPv6 Manual de usuario Pagina 22

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Configuring IPv6 Services
1-22 118428-A Rev. A
Static IPv4 Tunnel
A static tunnel -- also called a configured tunnel -- is a mechanism for forwarding
any IPv6 packet through an IPv4 region. F
igure 1-4 shows a static tunnel between
an IPv4 interface on router C and an IPv4 interface on router D. (Note that routers
C and D are running both IPv4 and IPv6).
Figure 1-4. Configured IPv4 Static Tunnel
In Figure 1-4, for example, a user connected to router B in Region 1 sends a
packet addressed to a user on router F in Region 3. The following steps occur:
1. Router C receives the IPv6 packet and determines that it must be forwarded
out its tunnel interface.
Region 1
Region 2
Region 3
IPv6
A
IPv6
B
IPv6
F
IPv6
E
IPv4
H
IPv4
G
IPv4
J
IPv4
I
IPv6 IPv6
IPv4
Configured
IPV4 tunnel
with end points
IPv6
C
IPv4
IPv6
D
IPv4
IP0042A
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