NAME

TARGET

Host

TOPOLOGY

                    
                                  |
                                  R       CN0
                                  |        |
                     -----+-------+--------+---------------- LinkZ
                          |
                          R2                      NUTY
                          |                         |
                     -----+-------+-----------------+------- LinkY
                                  |
                                  R1              NUTX
                                  |                 |
                     -----+-------+-----------------+------- LinkX
                          |
                         HA0             Node0    NUT0
                          |               |         |
    ----------------------+---------------+---------+------- Link0
                    

Link0	3ffe:501:ffff:100::/64	home link
LinkX	3ffe:501:ffff:102::/64
LinkY	3ffe:501:ffff:103::/64
LinkZ	3ffe:501:ffff:104::/64
HA0(Link0)	3ffe:501:ffff:100:200:ff:fe00:a0a0
Node0(Link0)	3ffe:501:ffff:100:200:ff:fe00:a3a3
R1(LinkX)	3ffe:501:ffff:102:200:ff:fe00:a4a4
R2(LinkY)	3ffe:501:ffff:103:200:ff:fe00:a6a6
CN0(LinkZ)	3ffe:501:ffff:104:200:ff:fe00:a8a8

INITIALIZATION

 1. Selection Option
    - none
 2. Position of Mobile Node
    - none

TEST PROCEDURE

                    
       HA0     NUT0     R1      R2      CN0
        |       |       |       |        |
        | ----> |       |       |        | 1.Router Advertisement
        |       |       |       |        |
        |      NUTX     |       |        |
        |       |       |       |        |
        |       | <---- |       |        | 2.Router Advertisement
        |       |       |       |        |
        | <---- |       |       |        | 3.Neighbor Solicitations
        |       |       |       |        | 4.(no reply:3 seconds)
        |       |       |       |        |
        | <---- |       |       |        | 5.Binding Update
        | ----> |       |       |        | 6.Binding Acknowledgement
        |       |       |       |        |
        | <---- |       |       |        | 7.Binding Update (*1)
        |       |       |       |        |
                    
        1. Send Router Advertisement. (HA0 -> HA0_allnode_multi)
        2. Send Router Advertisement. (R1 -> R1_allnode_multi)
        3. Receive Neighbor Solicitations. (NUT0 -> HA0)
        4. (no reply)
            # Wait during a maximum of 3 seconds(RFC2461).
        5. Receive Binding Update. (NUTX -> HA0)
        6. Send Binding Acknowledgement. (HA0 -> NUTX)
            # The Status field is set to 135(Sequence Number out of window).
            # The Sequence Number field is 65535( the maximum value of modulo 2**16).
        7. Receive Binding Update. (NUTX -> HA0)
                    
        Packet Format is:
          6. Binding Acknowledgement
          7. Binding Update
                    

JUDGEMENT

 (*1) PASS: HA0 receives Binding Update,
            Then, check whether this packet fills all of the following,
             - The Sequence Number field is set to the minimum value.

REFERENCE

                    
(draft-ietf-mobileip-ipv6-24.txt)
                    
11.7.1 Sending Binding Updates to the Home Agent
                    
(snip)
                    
   The last Sequence Number value sent to the home agent in a Binding
   Update is stored by the mobile node.  If the sending mobile node has
   no knowledge of the right Sequence Number value, it may start at any
   value.  If the home agent rejects the value, it sends back a Binding
   Acknowledgement with status code 135, and the last accepted sequence
   number in the Sequence Number field of the Binding Acknowledgement.
   The mobile node MUST store this information and use the next Sequence
   Number value for the next Binding Update it sends.