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1. EP2033381 - A METHOD AND SYSTEM FOR OPTIMIZING RESOURCES FOR ESTABLISHING PSEUDO-WIRES IN A MULTIPROTOCOL LABEL SWITCHING NETWORK

Office European Patent Office
Application Number 07766632
Application Date 22.06.2007
Publication Number 2033381
Publication Date 11.03.2009
Publication Kind A2
IPC
H04L 12/56
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
12Data switching networks
54Store-and-forward switching systems
56Packet switching systems
H04L 12/46
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
12Data switching networks
28characterised by path configuration, e.g. LAN or WAN
46Interconnection of networks
CPC
H04L 47/724
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
47Traffic regulation in packet switching networks
70Admission control or resource allocation
72Reservation actions
724involving intermediate nodes, e.g. RSVP
H04L 12/4633
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
12Data switching networks
28characterised by path configuration, e.g. local area networks [LAN], wide area networks [WAN]
46Interconnection of networks
4633Interconnection of networks using encapsulation techniques, e.g. tunneling
H04L 45/502
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
45Routing or path finding of packets in data switching networks
50using label swapping, e.g. multi-protocol label switch [MPLS]
502Frame based
H04L 47/70
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
47Traffic regulation in packet switching networks
70Admission control or resource allocation
H04L 47/825
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
47Traffic regulation in packet switching networks
70Admission control or resource allocation
82Miscellaneous aspects
825Involving tunnels, e.g. MPLS
Applicants ALCATEL LUCENT
Inventors RUSMISEL JASON DIRK
KUTMAN ALEXANDER
BASSEM ABDEL-AZIZ
RAJSIC CARL
Designated States
Priority Data 2007002035 06.06.2007 IB
11448826 08.06.2006 US
Title
(DE) VERFAHREN UND SYSTEM ZUM OPTIMIEREN VON BETRIEBSMITTELN UND ZUM HERSTELLEN VON PSEUDO-WIRES IN EINEM LABEL-SWITCHING-NETZWERK MIT MEHREREN PROTOKOLLEN
(EN) A METHOD AND SYSTEM FOR OPTIMIZING RESOURCES FOR ESTABLISHING PSEUDO-WIRES IN A MULTIPROTOCOL LABEL SWITCHING NETWORK
(FR) PROCÉDÉ ET SYSTÈME D'OPTIMISATION DES RESSOURCES POUR L'ÉTABLISSEMENT DE PSEUDO-CÂBLES DANS UN RÉSEAU À COMMUTATION D'ÉTIQUETTES À PROTOCOLES MULTIPLES
Abstract
(EN)
A method for establishing a pseudo-wire connection between first and second switches in a packet switched network, the method comprising: sending a label mapping message to the second switch requesting that the pseudo-wire connection be established with the first switch; reserving resources for the pseudo-wire connection at the first switch; receiving a label withdraw message from the second switch if the second switch has insufficient resources for the pseudo-wire connection and, in response to the label withdraw message, releasing the resources for the pseudo- wire connection at the first switch; and, activating the pseudo-wire connection if the second switch has sufficient resources for the pseudo-wire connection, thereby optimizing resources for establishing pseudo-wire connections of each of the first and second switches.

(FR)
La présente invention concerne un procédé d'établissement d'une connexion de pseudo-câble entre des premier et second commutateurs dans un réseau à commutation de paquets, le procédé comprenant les étapes consistant à : envoyer un message de mise en correspondance d'étiquettes au second commutateur demandant que la connexion du pseudo-câble soit établie avec le premier commutateur ; réserver des ressources pour la connexion du pseudo-câble au niveau du premier commutateur ; recevoir un message de retrait d'étiquettes provenant du second commutateur si le second commutateur a des ressources insuffisantes pour la connexion du pseudo-câble et, en réponse au message de retrait d'étiquettes, libérer les ressources pour la connexion du pseudo-câble au niveau du premier commutateur ; et activer la connexion du pseudo-câble si le second commutateur a des ressources suffisantes pour la connexion du pseudo-câble, optimisant ainsi les ressources permettant d'établir les connexions de pseudo-câble de chacun des premier et second commutateurs.

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