NAME

CN-3-2-2 - Re-Registration - Without the return routability procedure

TARGET

Host

TOPOLOGY

       HA----------R2----------R1----------R0
       |           |           |           |
       |           |           |           |
       |----       |----       |----MN     |----CN(NUT)
       |           |           |           |
       |           |           |           |
   Home Link     Link2       Link1       Link0
               (Foreign)   (Foreign)

Link0	3ffe:501:ffff:100::/64
Link1	3ffe:501:ffff:101::/64	Foreign Link
Link2	3ffe:501:ffff:102::/64	Foreign Link 2
Home Link	3ffe:501:ffff:104::/64	Home Link
CN(NUT)	3ffe:501:ffff:100::X Auto Configuration (InterfaceID)
MN(in Link1)	3ffe:501:ffff:101::Y Increased in each test (InterfaceID)	MN care-of address
MN(in Home Link)	3ffe:501:ffff:104::Y Increased in each test (InterfaceID)	MN home address
R0(Link0)	3ffe:501:ffff:100::1
R1(Link1)	3ffe:501:ffff:101::1
R2(Link2)	3ffe:501:ffff:102::1
HA(Home Link)	3ffe:501:ffff:104::1

INITIALIZATION

Reboot NUT (reboot.rmt)

TEST PROCEDURE

       MN      R1      HA      R0     CN(NUT) 
        |       |       |       |       |
        |       |       |       |------>| 1.RA
        |       |       |       |       |
        |       |       |       |------>| 2.NS
        |       |       |       |       |
        |       |       |       |<------| 3.NA
        |       |       |       |       |
        |-------------->|-------------->| 4.Echo Request
        |       |       |       |       |
        |<--------------|<--------------| 5.Echo Reply
        |       |       |       |       |
        |------------------------------>| 6.Echo Request(Home Address option)
        |       |       |       |       |
        |<------------------------------| 7.BE(Status=1)
        |       |       |       |       |
        |------------------------------>| 8.CoTI
        |       |       |       |       |
        |-------------->|-------------->| 9.HoTI
        |       |       |       |       |
        |<------------------------------| 10.CoT
        |       |       |       |       |
        |<--------------|<--------------| 11.HoT
        |       |       |       |       |
        |------------------------------>| 12.BU(Lifetime=420s)
        |       |       |       |       |
        |<------------------------------| 13.BA(Lifetime=420s)
        |       |       |       |       |
        |------------------------------>| 14.Echo Request(Home Address option)
        |       |       |       |       |
        |<------------------------------| 15.Echo Reply(Type2 Routing Header)
        |       |       |       |       |
        |------------------------------>| 16.BU(New Lifetime=4s, reused indices and tokens)
        |       |       |       |       |
        |<------------------------------| 17.BA(New Lifetime) (*1)
        |       |       |       |       |
        |------------------------------>| 18.Echo Request(Home Address option)
        |       |       |       |       |
        |<------------------------------| 19.Echo Reply(Type2 Routing Header) (*2)
        |       |       |       |       |
        |       |       |       |       | (Expire New Lifetime)
        |       |       |       |       |
        |------------------------------>| 20.Echo Request(Home Address option)
        |       |       |       |       |
        |<------------------------------| 21.BE(Status=1)
        |       |       |       |       |

1. Send Router Advertisement.
2. Send Neighbor Solicitation.
3. Receive Neighbor Advertisement.
4. Send ICMP Echo Request.
5. Receive ICMP Echo Reply.
6. Send ICMP Echo Request(Home Address option).
7. Receive Binding Error(Status=1).
8. Send Care-of Test Init.
9. Send Home Test Init.
10. Receive Care-of Test.
11. Receive Home Test.
12. Send Binding Update(Lifetime=420s).
13. Receive Binding Acknowledgement(Lifetime=420s).
14. Send ICMP Echo Request(Home Address option).
15. Receive ICMP Echo Reply(Type2 Routing Header).
16. Send Binding Update(New Lifetime=4s, reused indices and tokens).
17. Receive Binding Acknowledgement(New Lifetime).
18. Send ICMP Echo Request(Home Address option).
19. Receive ICMP Echo Reply(Type2 Routing Header).
   *Expire New Lifetime
20. Send ICMP Echo Request(Home Address option).
21. Receive Binding Error(Status=1).

Packet Format
16. Binding Update
17. Binding Acknowledgement
18. ICMP_Echo Request(Home Address option)
19. ICMP Echo Reply(Type2 Routing Header)
20. ICMP_Echo Request(Home Address option)
21. Binding Error

JUDGEMENT

(*1) MN receives Binding Acknowledgement.
  - The Destination Address is set to the Source Address of the Binding Update (MN care-of address).
  - Type 2 Routing Header is included.
  - The Home Address field of Type 2 Routing Header is set to MN home address.

(*2) MN receives ICMP Echo Reply. (Binding Cache entry is updated.)
  - The Destination Address is set to the Source Address of the Binding Update (MN care-of address).
  - Type 2 Routing Header is included.
  - The Home Address field of Type 2 Routing Header is set to MN home address.

(*3) MN receives Binding Error.
 (The lifetime initialized by the second registration expires and the entry is deleted.)
  - The Destination Address is set to the Source Address of ICMP Echo Request (MN care-of address).
  - The Status field is set to 1.
  - The Home Address field is set to the value in the Home Address option in the ICMP Echo Request (MN home address).

REFERENCE

(draft-ietf-mobileip-ipv6-24.txt)

9.5.1 Receiving Binding Updates

   o  If the Lifetime specified in the Binding Update is nonzero and the
      specified care-of address is not equal to the home address for the
      binding, then this is a request to cache a binding for the home
      address.  If the Home Registration (H) bit is set in the Binding
      Update, the Binding Update is processed according to the procedure
      specified in Section 10.3.1; otherwise, it is processed according
      to the procedure specified in Section 9.5.2.

9.5.2 Requests to Cache a Binding

   In this case, the receiving node SHOULD create a new entry in its
   Binding Cache for this home address, or update its existing Binding
   Cache entry for this home address, if such an entry already exists.
   The lifetime for the Binding Cache entry is initialized from the
   Lifetime field specified in the Binding Update, although this
   lifetime MAY be reduced by the node caching the binding; the lifetime
   for the Binding Cache entry MUST NOT be greater than the Lifetime
   value specified in the Binding Update.  Any Binding Cache entry MUST
   be deleted after the expiration of its lifetime.