Weak duplicate address detection in mobile ad hoc networks

Nitin H. Vaidya

Research output: Contribution to conferencePaperpeer-review


Auto-configuration is a desirable goal in implementing mobile ad hoc networks. Specifically, automated dynamic assignment (without manual intervention) of IP addresses is desirable. In traditional networks, such dynamic address assignment is often performed using the Dynamic Host Configuration Protocol (DHCP). Implementing DHCP, however, requires access to a DHCP server. In mobile ad hoc networks, it is difficult to guarantee access to a DHCP server, since ad hoc networks can become partitioned due to host mobility. Therefore, alternative mechanisms must be employed. One plausible approach is to allow a node to pick a tentative address randomly (or using some locally available information), and then use a "duplicate address detection" (DAD) procedure to detect duplicate addresses. The previously proposed DAD procedures make use of timeouts and do not always perform correctly in presence of partitions. In networks where message delays cannot be bounded, use of timeouts can lead to unreliability. Therefore, we propose an alternative approach (which can be used in conjunction with previously proposed schemes). We refer to the proposed approach as "weak" duplicate address detection. The goal of weak DAD is to prevent a packet from being routed to the "wrong" destination node, even if two nodes in the network happen to have chosen the same IP address. We also propose an enhanced version of the weak DAD scheme, which removes a potential shortcoming of the weak DAD approach.

Original languageEnglish (US)
Number of pages11
StatePublished - 2002
Externally publishedYes
EventMOBIHOC 2002: PROCEEDINGS OF The Third ACM International Symposium on Mobile Ad Hoc Networking and Computing - Lausanne, Switzerland
Duration: Jun 9 2002Jun 11 2002


OtherMOBIHOC 2002: PROCEEDINGS OF The Third ACM International Symposium on Mobile Ad Hoc Networking and Computing


  • Auto-configuration
  • Duplicate address detection
  • Mobile ad hoc networks

ASJC Scopus subject areas

  • Computer Networks and Communications


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