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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

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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