Mant address autoconfiguration issues
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MANT Address Autoconfiguration Issues. draft-jeong-manet-addr-autoconf-reqts-01.txt draft-jeong-adhoc-ip-addr-autoconf-02.txt draft-jeong-manet-aodv-addr-autoconf-00.txt. Jaehoon Paul Jeong ETRI [email protected] http://www.adhoc.6ants.net/~paul/ 2 nd March 2004. Contents.

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MANT Address Autoconfiguration Issues

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Mant address autoconfiguration issues

MANT Address Autoconfiguration Issues

draft-jeong-manet-addr-autoconf-reqts-01.txt

draft-jeong-adhoc-ip-addr-autoconf-02.txt

draft-jeong-manet-aodv-addr-autoconf-00.txt

Jaehoon Paul Jeong

ETRI [email protected] http://www.adhoc.6ants.net/~paul/

2nd March 2004

IETF-59 MANET WG


Contents

Contents

  • Why is MANET Address Autoconf necessary?

  • Requirements for MANET Address Autoconf

  • Procedure of MANET Address Autoconf

  • MANET Address Autoconf for AODV

  • Further Work of Our Solution Mechanism

  • Discussion

IETF-59 MANET WG


Why is manet address autoconf necessary

Why is MANET Address Autoconf necessary?

  • Four basic MANET unicast routing protocols will be in the status of experimental RFC.

    • AODV, DSR, OLSR and TBRPF

  • Next Step of MANET WG?

    • Addressing is one of the most essential requirements in IP networking.

      • Automatic IP address configuration is necessary in MANET experiencing dynamic topology changes.

    • Various approaches have been suggested in the research domain

      • Stateless vs. Stateful approaches

      • Strong DAD vs. Weak DAD

      • Active DAD vs. Passive DAD

      • Prophet Address Allocation

  • Therefore, it is time to develop MANET IP Address Auto-configuration from Engineering Philosophy.

    • First of all, MANET WG should define the requirements for MANET Address Autoconf.

IETF-59 MANET WG


Requirements for manet address autoconf draft jeong manet addr autoconf reqts 01 txt 1 3

Requirements for MANET Address Autoconf(draft-jeong-manet-addr-autoconf-reqts-01.txt) - 1/3

  • Join and Departure of Mobile Nodes

    [R1] Address autoconf protocol MUST support timely autoconfiguration of IP address for a mobile node.

    [R2] Address autoconf protocol MAY support mechanisms to probe whether a mobile node moves into another MANET.

    [R3] Mobile nodes using address autoconf protocol MUST validate allocated IP addresses when powering up or rebooting.

    [R4] Mobile nodes using address autoconf protocol MAY validate allocated IP addresses when moving into a new network.

IETF-59 MANET WG


Requirements for manet address autoconf draft jeong manet addr autoconf reqts 01 txt 2 3

Requirements for MANET Address Autoconf (draft-jeong-manet-addr-autoconf-reqts-01.txt) - 2/3

  • Network Partitioning and Merging

    [R5] Ad hoc address autoconf protocol MUST detect and resolve address conflicts in a timely manner and on an ongoing basis.

    [R6] Ad hoc address autoconf protocol MUST allow conflicted address replaced with another.

    [R7] Ad hoc address autoconf protocol SHOULD minimize the damage, such as loss of delivered packets, due to address replacement.

    [R8] Addresses SHOULD be allocated or autoconfigured in a way that minimizes the probability that two or more nodes will have the same address.

    [R9] In order to detect duplicate addresses, ad hoc address autoconf protocol MAY get the aid of ad hoc routing protocol.

IETF-59 MANET WG


Requirements for manet address autoconf draft jeong manet addr autoconf reqts 01 txt 3 3

Requirements for MANET Address Autoconf (draft-jeong-manet-addr-autoconf-reqts-01.txt) - 3/3

  • Internet Connectivity

    [R10] MANET SHOULD allow configuration of zero or more gateways for the global connectivity to the Internet.

    [R11] Mobile Node that desires Internet connectivity MAY have a globally routable IP address.

  • Other Scenarios?

    • We need your feedback and suggestion.

IETF-59 MANET WG


Procedure of manet address autoconf draft jeong adhoc ip addr autoconf 02 txt discussed at ietf 57

Procedure of MANET Address Autoconf(draft-jeong-adhoc-ip-addr-autoconf-02.txt), discussed at IETF-57

  • Step 1: Address selection

    • How to select one of IP addresses in the address space.

  • Step 2: Duplicate address detection

    • How to detect a duplicate address

  • Step 3: Address change negotiation

    • Which node should perform a reallocation procedure

  • Step 4: Maintenance of upper-layer sessions

    • How to let an upper-layer session avoid a connection breakage

IETF-59 MANET WG


Manet address autoconf for aodv draft jeong manet aodv addr autoconf 00 txt

MANET Address Autoconf for AODV(draft-jeong-manet-aodv-addr-autoconf-00.txt)

  • Step 1: Address selection

    • Random Address Selection

  • Step 2: Duplicate address detection

    • Hybrid DAD: Strong DAD + Weak DAD

  • Step 3: Address change negotiation

    • Address change indication similar to MIP binding update

  • Step 4: Maintenance of upper-layer sessions

    • Data delivery through IP tunneling

      • Address Mapping Cache management is necessary.

IETF-59 MANET WG


Further work of our solution mechanism

Further Work of Our Solution Mechanism

  • Victim Node Selection

    • Which node should give up its address ?

      • Consideration of the number of on-going sessions

      • Consideration of fairness

  • Maintenance of Upper-layer Sessions

    • How to avoid the connection breakage even after address change

  • Address Mapping Cache

    • Data structure of the cache and how to maintain it

  • Applicability into each MANET routing protocol

    • DSR, OLSR and TBRPF

IETF-59 MANET WG


Discussion

Discussion

  • Will MANET WG accept MANET Address Autoconf as next item?

    • draft-jeong-manet-addr-autoconf-reqts-01.txt

  • Suggestion and Question?

IETF-59 MANET WG


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