ReceivingPacketWRH - MN away from home can receive a
packet(w/RH) from CN
Host
ReceivingPacketWRH.seq [-tooloption ...] -pkt MN_Common.def
-tooloption: v6eval tool option
|
R TN
| |
--------+-------+--------------- LinkZ
|
R2 NUT2
| |
--------+---------------+------- LinkY
| |
HA2 R1 NUT1
| | |
--------+-------+-------+------- LinkX
| |
NUT0 HA1 HA0
| | |
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:a1a1/64 HA1(Link0) 3ffe:501:ffff:100:200:ff:fe00:a2a2/64 HA2(LinkX) 3ffe:501:ffff:102:200:ff:fe00:a3a3 R1(LinkX) 3ffe:501:ffff:102:200:ff:fe00:a4a4 R2(LinkY) 3ffe:501:ffff:103:200:ff:fe00:a5a5 TN(LinkZ) 3ffe:501:ffff:104:200:ff:fe00:a6a6
MN away from home can receive a packet(w/RH) from CN
HA0 NUT1 R1 TN
| | | |
| | <---- | | RA
| | | |
| <---- | | | Binding Update (*1)
| ----> | | | Binding Acknowledgement
| | | |
| | <------------ | Echo Request (out: HA0->NUT1, in: TN->NUT0)
| <==== | | ----> | reversed tunneled Echo Reply (out:NUT1->HA0, in:NUT0->TN)
| <==== | | ----> | Home Test Init(HoTI)
| | ------------> | Care-of Test (CoTI)
| ====> | | <---- | Home Test (HoT)
| | <------------ | Care-of Test (CoTI)
| | ------------> | Binding Update
| | | |
| | <------------ | Echo Request (w/ RH Type 2)
| | ------------> | Echo Reply (w/ HAO) (*2)
| | | |
(*1) PASS: HA0 receives Binding Update
(*2) PASS: TN receives Echo Reply (w/ Binding Update, Home Address Option)
draft-ietf-mobileip-ipv6-20.txt
11.3 Packet Processing
11.3.3 Receiving Packets While Away from Home
While away from home, a mobile node will receive packets addressed to its home address, by one of three methods:
o Packets sent by a correspondent node that does not have a Binding
Cache entry for the mobile node, will be tunneled to the mobile
node via its home agent.
o Packets sent by a correspondent node that has a Binding Cache
entry for the mobile node that contains the mobile node's current
care-of address, will be sent by the correspondent node using a
type 2 routing header. The packet will be addressed to the mobile
node's care-of address, with the final hop in the routing header
directing the packet to the mobile node's home address; the
processing of this last hop of the routing header is entirely
internal to the mobile node, since the care-of address and home
address are both addresses within the mobile node.
For packets received by the first of these methods, the mobile node MUST check that the IPv6 source address of the tunneled packet is the IP address of its home agent. In this method the mobile node SHOULD also send a Binding Update to the original sender of the packet, as described in Section 11.7.2, subject to the rate limiting defined in Section 11.8. The mobile node MUST also process the received packet in the manner defined for IPv6 encapsulation [15], which will result in the encapsulated (inner) packet being processed normally by upper-layer protocols within the mobile node, as if it had been addressed (only) to the mobile node's home address.