MN-6-2-2-1-001 - Receiving ICMP error (Code = 1) after sending BU to HA
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
- none.
2. Position of Mobile Node
- none.
HA0 NUT0 R1 R2 CN0
| | | | |
| ----> | | | | 1.Router Advertisement
| | | | |
| NUTX | | |
| | | | |
| | <---- | | | 2.Router Advertisement
| | | | |
| <---- | | | | 3.Neighbor Solicitations
| | | | | 4.(no reply:3 seconds)
| | | | |
| <---- | | | | 5.Binding Update
| ----> | | | | 6.ICMP Error(Code=1)
| | | | |
| | | | | 7.(wait) (*1)
| | | | |
| | <------------ | | 8.Router Advertisement
| | | | |
| | | | | 9.(wait) (*1)
| | | | |
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 ICMP Parameter Problem, Code 1.(HA0 -> NUTX)
# The Code field is set to 1.
7. (wait)
# Wait during retransmission time of Binding Update.
# (MAX_BINDACK_TIMEOUT(32 seconds) / 2)
8. Send Router Advertisement. (R2 -> R2_allnode_multi)
9. (wait)
# Wait during retransmission time of Binding Update.
# (MAX_BINDACK_TIMEOUT(32 seconds) / 2)
(*1) PASS: HA0 does not receive a retransmission of Binding Update.
(draft-ietf-mobileip-ipv6-24.txt)
11.3.5 Receiving ICMP Error Messages
Any node that does not recognize the Mobility header will return an
ICMP Parameter Problem, Code 1, message to the sender of the packet.
If the mobile node receives such an ICMP error message in response to
a return routability procedure or Binding Update, it SHOULD record in
its Binding Update List that future Binding Updates SHOULD NOT be
sent to this destination. Such Binding Update List entries SHOULD be
removed after a period of time, in order to allow for retrying route
optimization.
New Binding Update List entries MUST NOT be created as a result of
receiving ICMP error messages.