CN-6-2-1 - Check of Home Address and Care-of Address against BCE - No entry exists
Host
HA----------R2----------R1----------R0
| | | |
| | | |
|---- |---- |----MN |----CN(NUT)
| | | |
| | | |
Home Link Link2 Link1 Link0
(Foreign) (Foreign)
Link0 3ffe:501:ffff:100::/64 Link1 3ffe:501:ffff:101::/64 Foreign Link Link2 3ffe:501:ffff:102::/64 Foreign Link 2 Home Link 3ffe:501:ffff:104::/64 Home Link CN(NUT) 3ffe:501:ffff:100::X
Auto Configuration (InterfaceID)MN(in Link1) 3ffe:501:ffff:101::Y
Increased in each test (InterfaceID)MN care-of address MN(in Home Link) 3ffe:501:ffff:104::Y
Increased in each test (InterfaceID)MN home address R0(Link0) 3ffe:501:ffff:100::1 R1(Link1) 3ffe:501:ffff:101::1 R2(Link2) 3ffe:501:ffff:102::1 HA(Home Link) 3ffe:501:ffff:104::1
Reboot NUT (reboot.rmt)
MN R1 HA R0 CN(NUT)
| | | | |
| | | |------>| 1.RA
| | | | |
| | | |------>| 2.NS
| | | | |
| | | |<------| 3.NA
| | | | |
|-------------->|-------------->| 4.Echo Request
| | | | |
|<--------------|<--------------| 5.Echo Reply
| | | | |
|------------------------------>| 6.Echo Request(Home Address option)
| | | | |
|<------------------------------| 7.BE(Status=1)
| | | | |
|------------------------------>| 8.Echo Request(Home Address option)
| | | | |
|<------------------------------| 9.BE(Status=1)
| | | | |
|------------------------------>| 10.Echo Request(Home Address option)
| | | | |
|<------------------------------| 11.BE(Status=1) (*1)
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1. Send Router Advertisement. 2. Send Neighbor Solicitation. 3. Receive Neighbor Advertisement. 4. Send ICMP Echo Request. 5. Receive ICMP Echo Reply. 6. Send ICMP Echo Request(Home Address option). 7. Receive Binding Error(Status=1). 8. Send ICMP Echo Request(Home Address option). 9. Receive Binding Error(Status=1). 10. Send ICMP Echo Request(Home Address option). 11. Receive Binding Error(Status=1).
Packet Format 10. ICMP_Echo Request(Home Address option) 11. Binding Error
(*1) MN receives Binding Error. (Binding Cache entry is not created.) - The Destination Address is set to the Source Address of ICMP Echo Request (MN care-of address). - The Status field is set to 1.
(draft-ietf-mobileip-ipv6-24.txt)
9.1 Conceptual Data Structures
Binding Cache entries not marked as home registrations MAY be replaced at any time by any reasonable local cache replacement policy but SHOULD NOT be unnecessarily deleted. The Binding Cache for any one of a node's IPv6 addresses may contain at most one entry for each mobile node home address. The contents of a node's Binding Cache MUST NOT be changed in response to a Home Address option in a received packet.