NAME

CN-6-2-3 - Check of Home Address and Care-of Address against BCE - BCE is not changed

TARGET

Host

TOPOLOGY

       HA----------R2----------R1----------R0
       |           |           |           |
       |           |           |           |
       |----       |----MN'    |----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'(MN in Link2)	3ffe:501:ffff:102::Y Increased in each test (InterfaceID)	MN care-of address 2
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'     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
        |       |       |       |       |       |
        |       |<------------------------------| 13.BA
        |       |       |       |       |       |
        |       |------------------------------>| 14.Echo Request(Home Address option,Source Address=Link1-COA)
        |       |       |       |       |       |
        |       |<------------------------------| 15.Echo Reply(Type2 Routing Header)
        |       |       |       |       |       |
        |-------------------------------------->| 16.Echo Request(Home Address option,Source Address=Link2-COA)
        |       |       |       |       |       |
        |<--------------------------------------| 17.BE(Status=1)
        |       |       |       |       |       |
        |-------------------------------------->| 18.Echo Request(Home Address option,Source Address=Link2-COA)
        |       |       |       |       |       |
        |<--------------------------------------| 19.BE(Status=1) (*1)
        |       |       |       |       |       |
        |       |------------------------------>| 20.Echo Request(Home Address option,Source Address=Link1-COA)
        |       |       |       |       |       |
        |       |<------------------------------| 21.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.
11. Receive Home Test.
12. Send Binding Update.
13. Receive Binding Acknowledgement.
14. Send ICMP Echo Request(Source Address=Link1-COA).
15. Receive ICMP Echo Reply(Type2 Routing Header).
16. Send ICMP Echo Request(Source Address=Link2-COA)
17. Receive Binding Error(Status=1).
18. Send ICMP Echo Request(Source Address=Link2-COA)
19. Receive Binding Error(Status=1).
20. Send ICMP Echo Request(Source Address=Link1-COA).
21. Receive ICMP Echo Reply(Type2 Routing Header).

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

JUDGEMENT

(*1) MN' receives Binding Error. (Binding Cache entry is not created or updated.)
  - The Destination Address is set to the Source Address of ICMP Echo Request (MN care-of address 2).
  - The Status field is set to 1.

(*2) MN receives ICMP Echo Reply. (Binding Cache entry is not deleted or updated.)
  - The Destination Address is set to the Source Address of the Binding Update (MN care-of address 1).
  - Type 2 Routing Header is included.

REFERENCE

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

9.1 Conceptual Data Structures

   Binding Cache entries not marked as home registrations MAY be
   replaced at any time by any reasonable local cache replacement policy
   but SHOULD NOT be unnecessarily deleted.  The Binding Cache for any
   one of a node's IPv6 addresses may contain at most one entry for each
   mobile node home address.  The contents of a node's Binding Cache
   MUST NOT be changed in response to a Home Address option in a
   received packet.