Address selection in multihomed environments multi6 wg meeting - - - PowerPoint PPT Presentation

address selection in multihomed environments
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Address selection in multihomed environments multi6 wg meeting - - - PowerPoint PPT Presentation

Address selection in multihomed environments multi6 wg meeting - IETF 61 C. Huitema, R. Draves M. Bagnulo Scenario /-- ( A ) ---( ) (site X) ( IPv6 ) ---(C)---(site Y) X \-- ( B ) ---( ) Y A:X1


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SLIDE 1

Address selection in multihomed environments

multi6 wg meeting - IETF 61

  • C. Huitema, R. Draves
  • M. Bagnulo
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SLIDE 2

Scenario

/-- ( A ) ---( ) (site X) ( IPv6 ) ---(C)---(site Y) X \-- ( B ) ---( ) Y A:X1 C:Y B:X2

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SLIDE 3

Problem

/-- ( A ) ---( ) (site X) ( IPv6 ) ---(C)---(site Y) X \-- ( B ) ---( ) Y A:X1 C:Y B:X2

When Y initiates, dest addr sel some degree of support (app) When X intiates, source add sel not currently supported

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SLIDE 4

Goals

  • mechanisms for the MH host to

allow it to initiate new communications after an

  • utage
  • No changes to external hosts
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SLIDE 5

Possible approaches

  • Proactive mechanisms:

selecting the proper address

  • Direct link failure: deprecate through

RADV

  • Other failure modes: server learns

information through BGP

  • Reactive mechanisms: trial

and error by the host

  • Retyry with different source address
  • Who does the retrial? app, IP, try all at
  • nce?