NAME

CN_Bindingupdate - Binding Update accepted

TARGET

Host and Router

SYNOPSIS

CN_Bindingupdate.seq [-tooloption ...] -pkt CN_Bindingupdate.def

-tooloption: v6eval tool option

TOPOLOGY

                                                      MN'
                                                      |
                                      --------+-------+------- LinkY
                                              |
                                              R2      MN
                                              |       |
Link1 --------+-------        --------+-------+-------+------- LinkX
              |                       |
             NUT                      R1
              |                       |
Link0 --------+-----------------------+-----------------------

Link0	3ffe:501:ffff:100::/64
Link1	3ffe:501:ffff:101::/64
LinkX	3ffe:501:ffff:102::/64	home link
LinkY	3ffe:501:ffff:103::/64	foreign link
R1(Link0)	3ffe:501:ffff:100:200:ff:fe00:a0a0
MN	3ffe:501:ffff:102:200:ff:fe00:0002	home address
MN'	3ffe:501:ffff:103:200:ff:fe00:0002	care-of address

TEST PROCEDURE

       NUT      R1      MN      MN'
        |       |       |       |
        | <---- |       |       | RA
        |       |       |       |
        | <-------------------- | Echo Request
        | ----> |       |       | NS
        | <---- |       |       | NA
        | --------------------> | Echo Reply (*1)
        |       |       |       |
        | <---- |       |       | NA
        |       |       |       |
        | <-------------------- | Binding Update
        | --------------------> | Binding Acknowledgement (*2)
        |       |       |       |

1. check routing table - LinkY
	1.1. Host
		1.1.1. R1 sends RA
		1.1.2. MN' sends Echo Request
		1.2.3. Wait Echo Reply
		1.1.4. Receive Echo Reply

	1.2. Router
		1.2.1. MN' sends Echo Request
		1.2.2. Wait Echo Reply or NS
		1.2.3. If NS received then send NA, and wait Echo Reply again
		1.2.4. Receive Echo Reply

2. overwrite NCE on NUT
	2.1. R1 sends NA

3. check Binding Update operation
	3.1. MN' sends Binding Update
	3.2. Wait Binding Acknowledgement
	3.3. Receive Binding Acknowledgement

JUDGEMENT

(*1) PASS: MN' receives Echo Reply

(*2) PASS: MN' receives Binding Acknowledgement

REFERENCE

<draft-ietf-mobileip-ipv6-15.txt>

8.5. Sending Binding Acknowledgements

   When any node receives a packet containing a Binding Update option
   in which the Acknowledge (A) bit is set, it MUST return a Binding
   Acknowledgement option acknowledging receipt of the Binding Update.
   If the node accepts the Binding Update and creates or updates
   an entry in its Binding Cache for this binding, and the `A' bit
   was set in the Binding Update, the Status field in the Binding
   Acknowledgement MUST be set to a value less than 128; if, on the
   other hand the Binding Update is accepted and the `A' bit is not set,
   the node SHOULD NOT send a Binding Acknowledgement.  If the node
   rejects the Binding Update and does not create or update an entry for
   this binding, a Binding Acknowledgement MUST be sent even if the `A'
   bit was not sent, and the Status field in the Binding Acknowledgement
   MUST be set to a value greater than or equal to 128.  Specific values
   for the Status field are described in Section 5.2 and in the most
   recent "Assigned Numbers" [26].

SEE ALSO

CN_Common.def