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Label Space Reduction in MPLS Networks: How Much Can A Single Stacked Label Do?

Most network operators have considered reducing LSR label spaces (number of labels used) as a way of simplifying management of underlaying virtual private networks (VPNs) and therefore reducing operational expenditure (OPEX). The IETF outlined the label merging feature in MPLS-allowing the configuration of multipoint-to-point connections (MP2P)-as a means of reducing label space in LSRs. We found two main drawbacks in this label space reduction a)it should be separately applied to a set of LSPs with the same egress LSR-which decreases the options for better reductions, and b)LSRs close to the edge of the network experience a greater label space reduction than those close to the core. The later implies that MP2P connections reduce the number of labels asymmetrically

IEEE

Author: Solano Donado, Fernando
Stidsen, Thomas
Fabregat Gesa, Ramon
Marzo i Lázaro, Josep Lluís
Abstract: Most network operators have considered reducing LSR label spaces (number of labels used) as a way of simplifying management of underlaying virtual private networks (VPNs) and therefore reducing operational expenditure (OPEX). The IETF outlined the label merging feature in MPLS-allowing the configuration of multipoint-to-point connections (MP2P)-as a means of reducing label space in LSRs. We found two main drawbacks in this label space reduction a)it should be separately applied to a set of LSPs with the same egress LSR-which decreases the options for better reductions, and b)LSRs close to the edge of the network experience a greater label space reduction than those close to the core. The later implies that MP2P connections reduce the number of labels asymmetrically
Document access: http://hdl.handle.net/2072/59035
Language: eng
Publisher: IEEE
Rights: Tots els drets reservats
Subject: Extranets (Xarxes d’ordinadors)
MPLS (Norma)
Ordinadors, Xarxes d’ -- Arquitectures
Protocols de xarxes d’ordinadors
Telecomunicació -- Tràfic
Computer network architectures
Computer network protocols
Extranets (Computer networks)
MPLS standard
Telecommunication -- Traffic
Virtual Private Network
Title: Label Space Reduction in MPLS Networks: How Much Can A Single Stacked Label Do?
Type: info:eu-repo/semantics/article
Repository: Recercat

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