HA_2_1_4 - Lifetime expired
Router
MN1X
|
--------+-------+------- Link1X
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R1
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--------+-------+--------------- Link1
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NUT
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--------+---------------+------- Link0
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MN0
Link0 global 3ffe:501:ffff:100::/64 home link Link1 global 3ffe:501:ffff:101::/64 foreign link Link1X global 3ffe:501:ffff:1101::/64 foreign link R1 (Link1) global 3ffe:501:ffff:101::a1a1 ether 00:00:00:00:a1:a1 MN0 global 3ffe:501:ffff:100:200:ff:fe00:a2a2 home address MN1X global 3ffe:501:ffff:1101:200:ff:fe00:a2a2 care-of address
Check Link1 routing tableNUT (Link0) MN1X | | | <---- | Echo Request | ----> | Echo Reply | |
1. MN1X sends Echo Request 2. MN1X receives Echo Reply
home registrationNUT (Link0) MN1X | | | <---- | BU (SN=1, A=1, lifetime=0x0008) (SPI=0x101) | ----> | BA (SN=1) (SPI=0x102) | |
1. MN1X sends BU 2. MN1X receives BA
Check BCENUT (Link0) MN1X | | | <---- | Echo Request w/ HaO | ----> | Echo Reply w/ RH (*1) | | ... | | | <---- | Echo Request w/ HaO | ----> | BE (*2) | |
1. MN1X sends Echo Request w/ HaO 2. MN1X receives Echo Reply w/ RH (*1) ... 3. MN1X sends Echo Request w/ HaO 4. MN1X receives BE (*2) packet format is: Binding_Error_message_from_HA_to_MN.gif
(*1) PASS: MN1X receives Echo Reply w/ RH (*2) PASS: MN1X receives BE
The lifetime of the Binding Cache entry depends on a number of factors:o The lifetime for the Binding Cache entry MUST NOT be greater than the Lifetime value specified in the Binding Update.o The lifetime for the Binding Cache entry MUST NOT be greater than the remaining valid lifetime for the subnet prefix in the mobile node's home address specified with the Binding Update. The remaining valid lifetime for this prefix is determined by the home agent based on its own Prefix List entry for this prefix [12].The remaining preferred lifetime SHOULD NOT have any impact on the lifetime for the binding cache entry.The home agent MUST remove a binding when the valid lifetime of the prefix associated with it expires.o The home agent MAY further decrease the specified lifetime for the binding, for example based on a local policy. The resulting lifetime is stored by the home agent in the Binding Cache entry, and this Binding Cache entry MUST be deleted by the home agent after the expiration of this lifetime.