NAME

CN_PingAfterBu - Ping from MN to NUT (After Binding Update)

TARGET

Host and Router

SYNOPSIS

CN_PingAfterBu.seq [-tooloption ...] -pkt CN_PingAfterBu.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:fe00:0006	home address
MN'	3ffe:501:ffff:103:200:ff:fe00:0006	care-of address

TEST PROCEDURE

       NUT      R1      MN      MN'
        |       |       |       |
        | <---- |       |       | RA
        |       |       |       |
        | <-------------------- | Echo Request
        | ----> |       |       | NS
        | <---- |       |       | NA
        | --------------------> | Echo Reply (*1)
        |       |       |       |
        | <---- |       |       | NA
        |       |       |       |
        | <-------------------- | Binding Update
        |       |       |       |
        | <-------------------- | Echo Request (Home Address Option)
        | --------------------> | Echo Reply (*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 Cache entry operation
	3.1. MN' sends Binding Update
	3.2. MN' sends Echo Request including Home Address Option
	3.3. Wait Echo Reply
	3.4. Receive Echo Reply

JUDGEMENT

(*1) PASS: MN' receives Echo Reply

(*2) PASS: MN' receives Echo Reply including Routing Header

     WARN: MN receives Echo Reply

REFERENCE

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

8.9. Sending Packets to a Mobile Node

   Before sending any packet, the sending node SHOULD examine its
   Binding Cache for an entry for the destination address to which the
   packet is being sent.  If the sending node has a Binding Cache entry
   for this address, the sending node SHOULD use a Routing header to
   route the packet to this mobile node (the destination node) by way
   of the care-of address in the binding recorded in that Binding Cache
   entry.  For example, assuming use of a Type 0 Routing header [6], if
   no other use of a Routing header is involved in the routing of this
   packet, the mobile node sets the fields in the packet's IPv6 header
   and Routing header as follows:

    -  The Destination Address in the packet's IPv6 header is set to
       the mobile node's care-of address copied from the Binding Cache
       entry.

    -  The Routing header is initialized to contain a single route
       segment, with an Address of the mobile node's home address (the
       original destination address to which the packet was being sent).

SEE ALSO

CN_Common.def