Figure 3: Basic Encapsulation and De-capsulation with an IP-in-IP
Tunnel
Use Case: Configure IP-in-IP de-capsulation
The following topology describes a use case where IP-in-IP encapsulation and de-capsulation is used for
different segments of the network from source to destination. The IP-in-IP tunnel consists of multiple routers
used to de-capsulate and direct the packet through the data center fabric network.
Figure 4: IP-in-IP De-capsulation through a Data Center Network
The following illustration shows how the stacked IPv4 headers are de-capsulated as they traverse through the
de-capsulating routers.
Figure 5: IP Header De-capsulation
Stacked IP Header in an Encapsulated Packet
The encapsulated packet will have an outer IPv4 header stacked over the original IPv4 header, as shown in
the following illustration.
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Configuring IP-in-IP Decapsulation
IP-in-IP Decapsulation
