This Internet-Draft is no longer active. Unofficial copies of old Internet-Drafts can be found here:
http://tools.ietf.org/id/draft-ietf-mpls-ldp-restart.
Abstract:
This document describes a mechanism that helps to minimize the negative effects
on MPLS traffic caused by Label Switching Router's (LSR's) control plane restart, specifically by the
restart of its Label Distribution Protocol (LDP) component, on LSRs that are capable of preserving
the MPLS forwarding component across the restart. The mechanism described in this document is applicable
to all LSRs, both those with the ability to preserve forwarding state during LDP restart
and those without (although the latter needs to implement only a subset of the mechanism
described in this document). Supporting (a subset of) the mechanism described here by the LSRs
that can not preserve their MPLS forwarding state across the restart would not reduce the
negative impact on MPLS traffic caused by their control plane restart, but it would minimize
the impact if their neighbor(s) are capable of preserving the forwarding state across the restart
of their control plane and implement the mechanism described here. The mechanism makes minimalistic assumptions
on what has to be preserved across restart - the mechanism assumes that only the
actual MPLS forwarding state has to be preserved; the mechanism does not require any of
the LDP-related states to be preserved across the restart. The procedures described in
this document apply to downstream unsolicited label distribution. Extending these
procedures to downstream on demand label distribution is for further study.
[STANDARDS-TRACK]
Authors:
Manoj Leelanivas <manoj@juniper.net>
Yakov Rekhter <yakov@juniper.net>
Rahul Aggarwal <rahul@redback.com>
(Note: The e-mail addresses provided for the authors of this Internet-Draft may no longer be valid)
datatracker.ietf.org