[rfc-dist] RFC 5715 on A Framework for Loop-Free Convergence

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        RFC 5715

        Title:      A Framework for Loop-Free Convergence 
        Author:     M. Shand, S. Bryant
        Status:     Informational
        Date:       January 2010
        Mailbox:    mshand at cisco.com, 
                    stbryant at cisco.com
        Pages:      22
        Characters: 53223
        Updates/Obsoletes/SeeAlso:   None

        I-D Tag:    draft-ietf-rtgwg-lf-conv-frmwk-07.txt

        URL:        http://www.rfc-editor.org/rfc/rfc5715.txt

A micro-loop is a packet forwarding loop that may occur transiently
among two or more routers in a hop-by-hop packet forwarding paradigm.

This framework provides a summary of the causes and consequences of
micro-loops and enables the reader to form a judgement on whether
micro-looping is an issue that needs to be addressed in specific
networks.  It also provides a survey of the currently proposed
mechanisms that may be used to prevent or to suppress the formation
of micro-loops when an IP or MPLS network undergoes topology change
due to failure, repair, or management action.  When sufficiently fast
convergence is not available and the topology is susceptible to
micro-loops, use of one or more of these mechanisms may be desirable.
This document is not an Internet Standards Track specification; it is
published for informational purposes.

This document is a product of the Routing Area Working Group Working Group of the IETF.


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