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IETF87, Berlin 1 st August 2013

Multi-hop Ad Hoc Wireless Communication draft-baccelli-manet-multihop-communication-02 Emmanuel Baccelli Charlie Perkins. IETF87, Berlin 1 st August 2013. Problems with IP links in spontaneous wireless networks. Asymmetry Time-variance Non-transitivity Indefinite range

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IETF87, Berlin 1 st August 2013

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  1. Multi-hop Ad Hoc Wireless Communicationdraft-baccelli-manet-multihop-communication-02Emmanuel BaccelliCharlie Perkins IETF87, Berlin 1st August 2013

  2. Problems with IP links in spontaneous wireless networks • Asymmetry • Time-variance • Non-transitivity • Indefinite range = UNDEFINED CONNECTIVITY

  3. Consequences • Concept of a “neighbor” becomes ambiguous • Affects “neighbor discovery protocol” • Definition of a “link” is no longer as crisp • Affects the operation of protocols using “link-local” addresses • Have to be very careful when advertising “subnet prefixes” (see for instance RFC 5889) • ICMP handling • What if the subnet gets “disconnected”? • Did I mention “verrrrrry careful”???

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