Use of the OSPF-MANET Interface in Single-Hop Broadcast Networks
RFC 7137
Document | Type |
RFC - Experimental
(February 2014; No errata)
Updates RFC 5820
|
|
---|---|---|---|
Authors | Alvaro Retana , Stan Ratliff | ||
Last updated | 2018-12-20 | ||
Replaces | draft-retana-ospf-manet-single-hop | ||
Stream | IETF | ||
Formats | plain text html pdf htmlized bibtex | ||
Reviews | |||
Stream | WG state | Submitted to IESG for Publication | |
Document shepherd | Yi Yang | ||
Shepherd write-up | Show (last changed 2013-11-04) | ||
IESG | IESG state | RFC 7137 (Experimental) | |
Consensus Boilerplate | Unknown | ||
Telechat date | |||
Responsible AD | Stewart Bryant | ||
Send notices to | (None) | ||
IANA | IANA review state | IANA OK - No Actions Needed | |
IANA action state | No IANA Actions |
Internet Engineering Task Force (IETF) A. Retana Request for Comments: 7137 S. Ratliff Updates: 5820 Cisco Systems, Inc. Category: Experimental February 2014 ISSN: 2070-1721 Use of the OSPF-MANET Interface in Single-Hop Broadcast Networks Abstract This document describes the use of the OSPF-MANET interface in single-hop broadcast networks. It includes a mechanism to dynamically determine the presence of such a network and specific operational considerations due to its nature. This document updates RFC 5820. Status of This Memo This document is not an Internet Standards Track specification; it is published for examination, experimental implementation, and evaluation. This document defines an Experimental Protocol for the Internet community. This document is a product of the Internet Engineering Task Force (IETF). It represents the consensus of the IETF community. It has received public review and has been approved for publication by the Internet Engineering Steering Group (IESG). Not all documents approved by the IESG are a candidate for any level of Internet Standard; see Section 2 of RFC 5741. Information about the current status of this document, any errata, and how to provide feedback on it may be obtained at http://www.rfc-editor.org/info/rfc7137. Retana & Ratliff Experimental [Page 1] RFC 7137 MANET Single-Hop Broadcast Networks February 2014 Copyright Notice Copyright (c) 2014 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. Code Components extracted from this document must include Simplified BSD License text as described in Section 4.e of the Trust Legal Provisions and are provided without warranty as described in the Simplified BSD License. Table of Contents 1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 2 1.1. Single-Hop Broadcast Networks . . . . . . . . . . . . . . 3 2. Requirements Language . . . . . . . . . . . . . . . . . . . . 3 3. Single-Hop Network Operation . . . . . . . . . . . . . . . . 4 3.1. Use of Router Priority . . . . . . . . . . . . . . . . . 4 3.2. Unsynchronized Adjacencies . . . . . . . . . . . . . . . 5 4. Single-Hop Network Detection . . . . . . . . . . . . . . . . 6 4.1. Transition from Multi-Hop to Single-Hop Mode . . . . . . 6 4.2. Transition from Single-Hop to Multi-Hop Mode . . . . . . 7 5. Security Considerations . . . . . . . . . . . . . . . . . . . 7 6. Acknowledgements . . . . . . . . . . . . . . . . . . . . . . 7 7. References . . . . . . . . . . . . . . . . . . . . . . . . . 7 7.1. Normative References . . . . . . . . . . . . . . . . . . 7 7.2. Informative References . . . . . . . . . . . . . . . . . 8 1. Introduction The OSPF-MANET interface [RFC5820] uses the point-to-multipoint adjacency model over a broadcast media to allow the following: o All router-to-router connections are treated as if they were point-to-point links. o The link metric can be set on a per-neighbor basis. o Broadcast and multicast can be accomplished through the Layer 2 broadcast capabilities of the media. Retana & Ratliff Experimental [Page 2] RFC 7137 MANET Single-Hop Broadcast Networks February 2014 It is clear that the characteristics of the MANET interface can also be beneficial in other types of network deployments -- specifically, in single-hop broadcast capable networks that may have a different cost associated with any pair of nodes. This document updates [RFC5820] by describing the use of the MANET interface in single-hop broadcast networks; this consists of its simplified operation by not requiring the use of overlapping relays as well as introducing a new heuristic for smart peering using the Router Priority. 1.1. Single-Hop Broadcast Networks The OSPF extensions for MANETs assume the ad hoc formation of a network over bandwidth-constrained wireless links, where packets may traverse several intermediate nodes before reaching their destination (multi-hop paths on the interface). By contrast, a single-hop broadcast network (as considered in this document) is one that is structured in such a way that all the nodes in it are directly connected to each other. An Ethernet interface is a good example ofShow full document text