MoveFreq - CoA changes frequently
Host
MoveFreq.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
CoA changes frequently
Loop
HA0 NUT1 R1 R2
| | <---- | | RA
| <---- | | | Binding Update (*1)
| ----> | | | Binding Acknowledgement
| NUT2 | | (Sleep 1 sec)
| | <------------ | RA
| <---- | | | Binding Update (*2)
| ----> | | | Binding Acknowledgement
| | | |
Loop
(*1) PASS: HA0 receives Binding Update
(*2) PASS: HA0 receives Binding Update
draft-ietf-mobileip-ipv6-20.txt11.5.2 Forming New Care-of Addresses
After detecting that it has moved from one link to another (i.e., its current default router has become unreachable and it has discovered a new default router), a mobile node SHOULD generate a new primary care-of address using normal IPv6 mechanisms. A mobile node MAY form a new primary care-of address at any time, but a mobile node MUST NOT send a Binding Update about a new care-of address to its home agent more than MAX_UPDATE_RATE times within a second.