draft-ietf-manet-nhdp-optimization-02.txt   draft-ietf-manet-nhdp-optimization-03.txt 
Mobile Ad hoc Networking (MANET) C. Dearlove Mobile Ad hoc Networking (MANET) C. Dearlove
Internet-Draft BAE Systems ATC Internet-Draft BAE Systems ATC
Updates: 6130, 7181 (if approved) T. Clausen Updates: 6130, 7181 T. Clausen
Intended status: Standards Track LIX, Ecole Polytechnique (if approved) LIX, Ecole Polytechnique
Expires: February 8, 2015 August 7, 2014 Intended status: Standards Track September 5, 2014
Expires: March 9, 2015
An Optimization for the MANET Neighborhood Discovery Protocol (NHDP) An Optimization for the MANET Neighborhood Discovery Protocol (NHDP)
draft-ietf-manet-nhdp-optimization-02 draft-ietf-manet-nhdp-optimization-03
Abstract Abstract
The link quality mechanism of the MANET Neighborhood Discovery The link quality mechanism of the MANET Neighborhood Discovery
Protocol (NHDP) enables "ignoring" some 1-hop neighbors if the Protocol (NHDP) enables "ignoring" some 1-hop neighbors if the
measured link quality from that 1-hop neighbor is below an acceptable measured link quality from that 1-hop neighbor is below an acceptable
threshold, while still retaining the corresponding link information threshold, while still retaining the corresponding link information
as acquired from HELLO message exchange. This allows immediate as acquired from HELLO message exchange. This allows immediate
reinstatement of the 1-hop neighbor if the link quality later reinstatement of the 1-hop neighbor if the link quality later
improves sufficiently. improves sufficiently.
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Internet-Drafts are working documents of the Internet Engineering Internet-Drafts are working documents of the Internet Engineering
Task Force (IETF). Note that other groups may also distribute Task Force (IETF). Note that other groups may also distribute
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Internet-Drafts are draft documents valid for a maximum of six months Internet-Drafts are draft documents valid for a maximum of six months
and may be updated, replaced, or obsoleted by other documents at any and may be updated, replaced, or obsoleted by other documents at any
time. It is inappropriate to use Internet-Drafts as reference time. It is inappropriate to use Internet-Drafts as reference
material or to cite them other than as "work in progress." material or to cite them other than as "work in progress."
This Internet-Draft will expire on February 8, 2015. This Internet-Draft will expire on March 9, 2015.
Copyright Notice Copyright Notice
Copyright (c) 2014 IETF Trust and the persons identified as the Copyright (c) 2014 IETF Trust and the persons identified as the
document authors. All rights reserved. document authors. All rights reserved.
This document is subject to BCP 78 and the IETF Trust's Legal This document is subject to BCP 78 and the IETF Trust's Legal
Provisions Relating to IETF Documents Provisions Relating to IETF Documents
(http://trustee.ietf.org/license-info) in effect on the date of (http://trustee.ietf.org/license-info) in effect on the date of
publication of this document. Please review these documents publication of this document. Please review these documents
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any of these changes are made then all of these changes MUST be made. any of these changes are made then all of these changes MUST be made.
4.1. Interface Information Bases 4.1. Interface Information Bases
The 2-Hop Set is modified by adding this additional element to each The 2-Hop Set is modified by adding this additional element to each
2-Hop Tuple: 2-Hop Tuple:
N2_lost is a boolean flag, which indicates the state of the N2_lost is a boolean flag, which indicates the state of the
corresponding Link Tuple. If L_status = SYMMETRIC (and thus corresponding Link Tuple. If L_status = SYMMETRIC (and thus
L_lost = false), then N2_lost = false. If L_SYM_time has not L_lost = false), then N2_lost = false. If L_SYM_time has not
expired, and L_lost = false (and hence L_status = LOST), then expired, and L_lost = true (and hence L_status = LOST), then
N2_lost = true. N2_lost = true.
In all other cases, including other cases with L_status = LOST, there In all other cases, including other cases with L_status = LOST, there
will be no such 2-Hop Tuples. will be no such 2-Hop Tuples.
4.2. HELLO Message Processing 4.2. HELLO Message Processing
In Section 12.6 of [RFC6130] make the following changes: In Section 12.6 of [RFC6130] make the following changes:
o In point 2, change "L_status = SYMMETRIC" to "L_SYM_time not o In point 2, change "L_status = SYMMETRIC" to "L_SYM_time not
 End of changes. 4 change blocks. 
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