HP-UX Mobile IPv6 A.01.00 Administrator's Guide

Chapter 1

Introducing HP-UX Mobile IPv6

Establishing Basic Operation

Basic Operation Data Paths

Mobile Node to Correspondent Node Data Path in Basic Operation

In basic operation mode, the Mobile Node sends data-packets to the Correspondent Node through its Home

Agent using the following procedure, and as shown in Figure 1-6, Data Path: Mobile Node to Correspondent

Node in Basic Operation:

1. The Mobile Node builds a data-packet with its home address as the source and the Correspondent Node’s

address as the destination.

2. The Mobile Node encapsulates the data-packet in a data-packet with its Care-of Address as the source

and the Home Agent’s address as the destination. This process forms a tunnel between the Care-of

Address on the Mobile Node and the Home Agent.

3. The Home Agent receives the encapsulated data-packet and decapsulates it.

4. The Home Agent forwards the original data-packet to the Correspondent Node.

Figure 1-6 Data Path: Mobile Node to Correspondent Node in Basic Operation

NOTE Sending data-packets from the Mobile Node to the Correspondent Node through the Home

Agent is sometimes referred to as reverse-tunneling because of the original use of the term in

Mobile IPv4.

Foreign Network

Home Network

Home Agent

Mobile Node

Correspondent

Node

Src: Home Address

Dest: Correspondent Node

Src: Care-of Address

Dest: Home Agent

Src: Home Address

Dest: Correspondent Node