A new Request for Comments is now available in online RFC libraries.
RFC 6138
Title: LDP IGP Synchronization for Broadcast
Networks
Author: S. Kini, Ed.,
W. Lu, Ed.
Status: Informational
Stream: IETF
Date: February 2011
Mailbox: sriganesh.kini@ericsson.com,
wenhu.lu@ericsson.com
Pages: 9
Characters: 20161
Updates: RFC5443
I-D Tag: draft-ietf-mpls-ldp-igp-sync-bcast-06.txt
URL: http://www.rfc-editor.org/rfc/rfc6138.txt
RFC 5443 describes a mechanism to achieve LDP IGP synchronization to
prevent black-holing traffic (e.g., VPN) when an Interior Gateway
Protocol (IGP) is operational on a link but Label Distribution
Protocol (LDP) is not. If this mechanism is applied to broadcast
links that have more than one LDP peer, the metric increase
procedure can only be applied to the link as a whole but not to an
individual peer. When a new LDP peer comes up on a broadcast network,
this can result in loss of traffic through other established peers on
that network. This document describes a mechanism to address that
use-case without dropping traffic. The mechanism does not introduce
any protocol message changes. This document is not an Internet Standards
Track specification; it is published for informational purposes.
This document is a product of the Multiprotocol Label Switching Working Group of the IETF.
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