draft-ietf-bfd-multipoint-15.txt   draft-ietf-bfd-multipoint-16.txt 
Internet Engineering Task Force D. Katz Internet Engineering Task Force D. Katz
Internet-Draft Juniper Networks Internet-Draft Juniper Networks
Updates: 5880 (if approved) D. Ward Updates: 5880 (if approved) D. Ward
Intended status: Standards Track Cisco Systems Intended status: Standards Track Cisco Systems
Expires: October 19, 2018 S. Pallagatti, Ed. Expires: October 20, 2018 S. Pallagatti, Ed.
Individual contributor Individual contributor
G. Mirsky, Ed. G. Mirsky, Ed.
ZTE Corp. ZTE Corp.
April 17, 2018 April 18, 2018
BFD for Multipoint Networks BFD for Multipoint Networks
draft-ietf-bfd-multipoint-15 draft-ietf-bfd-multipoint-16
Abstract Abstract
This document describes extensions to the Bidirectional Forwarding This document describes extensions to the Bidirectional Forwarding
Detection (BFD) protocol for its use in multipoint and multicast Detection (BFD) protocol for its use in multipoint and multicast
networks. networks.
Requirements Language Requirements Language
The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT", The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
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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
working documents as Internet-Drafts. The list of current Internet- working documents as Internet-Drafts. The list of current Internet-
Drafts is at https://datatracker.ietf.org/drafts/current/. Drafts is at https://datatracker.ietf.org/drafts/current/.
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 October 19, 2018. This Internet-Draft will expire on October 20, 2018.
Copyright Notice Copyright Notice
Copyright (c) 2018 IETF Trust and the persons identified as the Copyright (c) 2018 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
(https://trustee.ietf.org/license-info) in effect on the date of (https://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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PointToPoint: Classic point-to-point BFD, as described in PointToPoint: Classic point-to-point BFD, as described in
[RFC5880]. [RFC5880].
MultipointHead: A session on the head responsible for the MultipointHead: A session on the head responsible for the
periodic transmission of multipoint BFD Control packets periodic transmission of multipoint BFD Control packets
along the multipoint path. along the multipoint path.
MultipointTail: A multipoint session on a tail. MultipointTail: A multipoint session on a tail.
This variable MUST be initialized to the appropriate type when This variable MUST be initialized to the appropriate type when
the session is created, according to the rules in Section 4.13 the session is created.
4.4.2. State Variable Initialization and Maintenance 4.4.2. State Variable Initialization and Maintenance
Some state variables defined in section 6.8.1 of [RFC5880] need to be Some state variables defined in section 6.8.1 of [RFC5880] need to be
initialized or manipulated differently depending on the session type. initialized or manipulated differently depending on the session type.
bfd.RequiredMinRxInterval bfd.RequiredMinRxInterval
This variable MUST be initialized to 0 for session type This variable MUST be initialized to 0 for session type
MultipointHead. MultipointHead.
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