Protocols And Standards; Tunneling Configuration Task List - HP 6125G Configuration Manual

Figure 63 shows the encapsulation and de-encapsulation processes.
• Encapsulation
After receiving the IPv6 packet, the interface of Device A connecting private network A submits
a.
it to the IPv6 module for processing. The IPv6 module then determines how to forward the
packet.
If the packet is destined for Host B connected to Device B, the packet is sent to Router A's tunnel
b.
interface that is connected to Device B.
After receiving the packet, the tunnel interface adds an IPv6 header to it and submits it to the
c.
IPv6 module for processing.
The IPv6 module re-determines how to forward the packet according to the destination address
d.
in the IPv6 header.
De-encapsulation
•
The de-encapsulation follows these steps:
The packet received from the IPv6 network interface is sent to the IPv6 module for processing.
a.
The IPv6 module checks the protocol type of the data portion encapsulated in the IPv6 packet.
b.
If the encapsulation protocol is IPv6, the packet is sent to the tunnel processing module for
de-encapsulation.
The de-encapsulated packet is sent to the IPv6 protocol module for the secondary routing
c.
process.

Protocols and standards

• RFC 1853, IP in IP Tunneling
RFC 2473, Generic Packet Tunneling in IPv6 Specification
•
RFC 2893, Transition Mechanisms for IPv6 Hosts and Routers
•
• RFC 3056, Connection of IPv6 Domains via IPv4 Clouds
RFC 4214, Intra-Site Automatic Tunnel Addressing Protocol (ISATAP)
•

Tunneling configuration task list

Task
Configuring a tunnel interface
Configuring an IPv6 over IPv4 tunnel
Configuring an IPv4 over IPv4 tunnel
Configuring an IPv4 over IPv6 tunnel
Configuring an IPv6 over IPv6 tunnel
Configuring an IPv6 manual tunnel
Configuring a 6to4 tunnel
Configuring an ISATAP tunnel
124
Remarks
Required.
Optional.
Use one as needed.
Optional.
Optional.
Optional.