MN-3-3-1-2-009 - Receiving BE (Status = 2) after sending CoTI
Host
|
R CN0
| |
-----+-------+--------+---------------- LinkZ
|
R2 NUTY
| |
-----+-------+-----------------+------- LinkY
|
R1 NUTX
| |
-----+-------+-----------------+------- LinkX
|
HA0 Node0 NUT0
| | |
----------------------+---------------+---------+------- Link0
| Link0 |
3ffe:501:ffff:100::/64 |
home link |
| LinkX |
3ffe:501:ffff:102::/64 |
|
| LinkY |
3ffe:501:ffff:103::/64 |
|
| LinkZ |
3ffe:501:ffff:104::/64 |
|
| HA0(Link0) |
3ffe:501:ffff:100:200:ff:fe00:a0a0 |
|
| Node0(Link0) |
3ffe:501:ffff:100:200:ff:fe00:a3a3 |
|
| R1(LinkX) |
3ffe:501:ffff:102:200:ff:fe00:a4a4 |
|
| R2(LinkY) |
3ffe:501:ffff:103:200:ff:fe00:a6a6 |
|
| CN0(LinkZ) |
3ffe:501:ffff:104:200:ff:fe00:a8a8 |
|
1. Selection Option
- Route Optimization support : YES
2. Position of Mobile Node
HA0 NUT0 R1 R2 CN0
| | | | |
| ----> | | | | 1.Router Advertisement
| | | | |
| NUTX | | |
| | | | |
| | <---- | | | 2.Router Advertisement
| | | | |
| <---- | | | | 3.Neighbor Solicitations
| | | | | 4.(no reply:3 seconds)
| | | | |
| <---- | | | | 5.Binding Update
| ----> | | | | 6.Binding Acknowledgement
| | | | |
1. Send Router Advertisement. (HA0 -> HA0_allnode_multi)
2. Send Router Advertisement. (R1 -> R1_allnode_multi)
3. Receive Neighbor Solicitations. (NUT0 -> HA0)
4. (no reply)
# Wait during a maximum of 3 seconds(RFC2461).
5. Receive Binding Update. (NUTX -> HA0)
6. Send Binding Acknowledgement. (HA0 -> NUTX)
HA0 NUTX R1 R2 CN0
| | | | |
| ====> | <--------------------- | 1.ICMP Echo Request
| | | | |
| <==== | ---------------------> | 2.Home Test Init
| | ---------------------> | 3.Care-of Test Init
| | <-------------------- | 4.Binding Error
| | | | |
| <==== | ---------------------> | 5.ICMP Echo Reply
| | | | |
| | | | | 6.(no retransmit:32 seconds) (*1)
| | | | |
| ====> | <--------------------- | 7.ICMP Echo Request
| <==== | ---------------------> | 8.ICMP Echo Reply (*2)
| | | | |
1. Send ICMP Echo Request. (out: HA0 -> NUTX, in: CN0 -> NUT0)
2. Receive Home Test Init. (out: NUTX -> HA0, in: NUT0 -> CN0)
3. Receive Care-of Test Init. (NUTX -> CN0)
4. Send Binding Error to NUTX. (CN0 -> NUTX)
5. Receive reverse tunneled ICMP Echo Reply. (out: NUTX -> HA0, in: NUT0 -> CN0)
6. (no retransmit)
# Wait during 32(MAX_BINDACK_TIMEOUT) seconds.
7. Send ICMP Echo Request. (out: HA0 -> NUTX, in: CN0 -> NUT0)
8. Receive reverse tunneled ICMP Echo Reply. (out: NUTX -> HA0, in: NUT0 -> CN0)
# Wait during 32(MAX_BINDACK_TIMEOUT) seconds.
Packet Format is:
4.Binding Error
8.ICMP Echo Reply Data is:
IPv6 header (source = care-of address,
destination = home agent)
ESP header
IPv6 header (source = home address,
destination = correspondent node)
ICMPv6 Echo Reply
(*1) PASS: CN0 does not receive a retransmission of Care-of Test Init.
(*2) PASS: CN0 receives ICMP Echo Reply by reverse tunneling.
Then, check whether this packet fills all of the following.
- CN0 does not receive Home Test Init or Care-of Test Init within
the retransmission timeout period.(MAX_BINDACK_TIMEOUT).
(draft-ietf-mobileip-ipv6-24.txt)
11.3.6 Receiving Binding Error Messages
(snip)
If the message Status field was 2 (unrecognized MH Type value), the
mobile node should perform one of the following two actions:
o If the mobile node is not expecting an acknowledgement or response
from the correspondent node, the mobile node SHOULD ignore this
message.
o Otherwise, the mobile node SHOULD cease the use of any extensions
to this specification. If no extensions had been used, the mobile
node should cease the attempt to use route optimization.