NAME

CN-2-5-1 - Receiving BU with (A)bit is cleared - Normal Test

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)
        |       |       |       |       |
        |------------------------------>| 7.CoTI
        |       |       |       |       |
        |-------------->|-------------->| 8.HoTI
        |       |       |       |       |
        |<------------------------------| 9.CoT
        |       |       |       |       |
        |<--------------|<--------------| 10.HoT
        |       |       |       |       |
        |------------------------------>| 11.BU((A)bit OFF)
        |       |       |       |       |
        |       |       |       |       | (*1)
        |       |       |       |       |
        |------------------------------>| 12.Echo Request(Home Address option)
        |       |       |       |       |
        |<------------------------------| 13.Echo Reply(Type2 Routing Header) (*2)
        |       |       |       |       |

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.
17. Receive Home Test.
11. Send Binding Update((A)bit OFF).
12. Send ICMP Echo Request(Home Address option).
13. Receive ICMP Echo Reply(Type2 Routing Header).

Packet Format
11. Binding Update
12. ICMP_Echo Request(Home Address option)
13. ICMP Echo Reply(Type2 Routing Header)

JUDGEMENT

(*1) MN receives neither Binding Acknowledgement nor Binding Error.

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

REFERENCE

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

9.5.4 Sending Binding Acknowledgements

   A Binding Acknowledgement may be sent to indicate receipt of a
   Binding Update as follows:

      (snip)

   o  If the node rejects the Binding Update due to an expired nonce
      index, sequence number being out of window (Section 9.5.1), or
      insufficiency of resources (Section 9.5.2), a Binding
      Acknowledgement MUST be sent.  If the node accepts the Binding
      Update, the Binding Acknowledgement SHOULD NOT be sent.