MANET Working Group Sanghyun Ahn Internet Draft University of Seoul Expires: June 13, 2016 December 22, 2015 Requirements on Multipath Routing Protocols for MANET draft-ahn-manet-multipath-requirement-00.txt Status of this Memo This Internet-Draft is submitted to IETF in full conformance with the provisions of BCP 78 and BCP 79. This document may not be modified, and derivative works of it may not be created, except to format it for publication as an RFC or to translate it into languages other than English. Internet-Drafts are working documents of the Internet Engineering Task Force (IETF), its areas, and its working groups. Note that other groups may also distribute working documents as Internet- Drafts. Internet-Drafts are draft documents valid for a maximum of six months and may be updated, replaced, or obsoleted by other documents at any time. It is inappropriate to use Internet-Drafts as reference material or to cite them other than as "work in progress." The list of current Internet-Drafts can be accessed at http://www.ietf.org/ietf/1id-abstracts.txt. The list of Internet-Draft Shadow Directories can be accessed at http://www.ietf.org/shadow.html. This Internet-Draft will expire on June 13, 2016. Copyright Notice Copyright (c) 2015 IETF Trust and the persons identified as the document authors. All rights reserved. This document is subject to BCP 78 and the IETF Trust's Legal Provisions Relating to IETF Documents (http://trustee.ietf.org/ license-info) in effect on the date of publication of this document. Please review these documents carefully, as they describe your rights and restrictions with respect to this document. Ahn Expires June 13, 2016 [Page 1] Internet-Draft Requirements on Multipath Routing Protocols December 2015 Abstract This document describes the requirements on the protocols providing multiple routes between a given source and destination node pair in a mobile ad hoc network (MANET). For this, the conditions to be considered in defining a MANET multipath routing protocol are listed. Table of Contents 1. Requirements notation . . . . . . . . . . . . . . . . . . . . ? 2. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . 3 3. Requirements on MANET Multipath Routing Protocols. . . . . . . 3 4. Other Considerations . . . . . . . . . . . . . . . . . . . . . 4 References . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Author's Address . . . . . . . . . . . . . . . . . . . . . . . . . 4 Ahn Expires June 13, 2016 [Page 2] Internet-Draft Requirements on Multipath Routing Protocols December 2015 1. Requirements notation The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT", "SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this document are to be interpreted as described in [RFC2119]. 2. Introduction The mobile ad hoc network (MANET) is composed of a number of mobile nodes which can communicate with each other through multiple wireless links without the help of a wired infrastructure. Therefore, in the MANET, the route connectivity tends to be very unstable. This route unstability can be mitigated by providing more than one route to a source and destination node pair. In recent years, there have been intensive studies done on multipath routing protocols for the MANET [1]. Also, multipath routing protocols may have the advantage of providing load balancing by distributing data traffic to a number of routes. On the other hand, it may incur more control message overhead to set up multiple routes. In this draft, we define the requirements on MANET multipath routing protocols. 3. Requirements on MANET Multipath Routing Protocols MANET multipath routing protocols MAY consider the following conditions: - the number of routes for a given pair of source and destination nodes - the disjointness of the routes between a source and destination node pair - the control message overhead for establishing a given number of routes - the base MANET unicast routing protocol, such as AODV [2] or DSR [3], on which the multipath routing protocol is defined - the degree of changes on the base MANET unicast routing protocol With considering the above-mentioned conditions, a MANET multipath routing protocol SHOULD satisfy the following requirements: Ahn Expires June 13, 2016 [Page 3] Internet-Draft Requirements on Multipath Routing Protocols December 2015 - The control message overhead incurred by a MANET multipath routing protocol SHOULD NOT overwhelm the data traffic in the network. Or, more definitively, it SHOULD NOT exceed a certain portion of the total amount of the network traffic. The latter is more definitive, but achieving this may not be feasible. - The modifications and/or extensions on the base MANET unicast routing protocol SHOULD NOT hinder the operation of the base MANET unicast routing protocol. - The number of routes provided for a given source and destination node pair SHOULD be controlled adaptively so that the multiple routes do not increase the amount of routing information maintained in a router unnecessarily. 4. Other Considerations TBD References [1] M. Tarique, K. E. Tepe, S. Abidi and S. Erfani, "Survey of Multipath Routing Protocols for Mobile Ad Hoc Networks," Journal of Network and Computer Applications, November 2009. [2] C. Perkins, E. Belding-Royer and S. Das, "Ad hoc On-Demand Distance Vector (AODV) Routing," RFC 3561, July 2003. [3] D. Johnson, Y. Hu and D. Maltz, "The Dynamic Source Routing Protocol," RFC 4728, February 2007. Author's Address Sanghyun Ahn University of Seoul 90, Cheonnong-dong, Tongdaemun-gu Seoul 130-743 Korea Email: ahn@uos.ac.kr Ahn Expires June 13, 2016 [Page 4]