MN-HA Signaling for HA Unavailability - PowerPoint PPT Presentation

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MN-HA Signaling for HA Unavailability

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A new Mobility Header type to switch a Mobile Node to another Home Agent ... Signals to the MN that it wont serve the MN any longer ... – PowerPoint PPT presentation

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Title: MN-HA Signaling for HA Unavailability


1
MN-HA Signaling for HA Unavailability
  • Brian Haley, Vijay Devarapalli, Deng Hui, James
    Kempf

2
Why?
  • Some reasons a signaling mechanism is needed
  • HA going offline
  • HA overloaded
  • HA address changing
  • Bootstrapping

3
Current drafts
  • draft-wakikawa-mip6-nemo-haha-spec-00.txt
  • Defines a Home Agent switch message
  • A new Mobility Header type to switch a Mobile
    Node to another Home Agent
  • draft-deng-mip6-ha-loadbalance-02
  • Uses new Mobility Header type to send a single
    Home Agent address to a Mobile Node
  • Previously used DHAAD
  • draft-kempf-mip6-ha-alert-00
  • Uses new ICMPv6 message to send multiple Home
    Agent addresses to a Mobile Node
  • Each draft defines its own security required for
    messages

4
New Messages
  • A Mobility header message from HA to MN
  • Signals to the MN that it wont serve the MN any
    longer
  • Suggests one or more alternate HA addresses
  • MN can pick the alternate HA from the message or
    perform DHAAD again
  • A Mobility header message from MN to HA
    acknowledging the above message
  • IPsec protection
  • BU/BAck SA can be used

5
Example
  • -------------------------
    -------
  • Payload Proto Header Len Type (TBD)
    Reserved
  • -------------------------
    -------
  • Checksum of addresses
    Reserved
  • -------------------------
    -------

  • . Home Agent Addresses...
    .
  • .
    .

  • -------------------------
    -------

6
Future
  • Necessary Work?
  • Become WG Document?
  • Comments?
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