CA2313904A1 - Supporting multiple services in label switched networks - Google Patents

Supporting multiple services in label switched networks Download PDF

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Publication number
CA2313904A1
CA2313904A1 CA002313904A CA2313904A CA2313904A1 CA 2313904 A1 CA2313904 A1 CA 2313904A1 CA 002313904 A CA002313904 A CA 002313904A CA 2313904 A CA2313904 A CA 2313904A CA 2313904 A1 CA2313904 A1 CA 2313904A1
Authority
CA
Canada
Prior art keywords
packets
network
label switching
multiprotocol label
paths
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA002313904A
Other languages
French (fr)
Other versions
CA2313904C (en
Inventor
Roy Harold Mauger
Simon Daniel Brueckheimer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Rockstar Consortium US LP
Original Assignee
Nortel Networks Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nortel Networks Corp filed Critical Nortel Networks Corp
Publication of CA2313904A1 publication Critical patent/CA2313904A1/en
Application granted granted Critical
Publication of CA2313904C publication Critical patent/CA2313904C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
    • H04Q3/0016—Arrangements providing connection between exchanges
    • H04Q3/0029—Provisions for intelligent networking
    • H04Q3/0045—Provisions for intelligent networking involving hybrid, i.e. a mixture of public and private, or multi-vendor systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L45/00—Routing or path finding of packets in data switching networks
    • H04L45/50—Routing or path finding of packets in data switching networks using label swapping, e.g. multi-protocol label switch [MPLS]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/54—Store-and-forward switching systems 
    • H04L12/56—Packet switching systems
    • H04L12/5601—Transfer mode dependent, e.g. ATM
    • H04L2012/5638—Services, e.g. multimedia, GOS, QOS
    • H04L2012/5665—Interaction of ATM with other protocols

Abstract

A telecommunications network architecture provides transport and switching of user services, particularly PSTN/ISDN services. In the network, connections are set up between end points which typically comprise narrow band exchanges serving subscribers. Calls are set up between the end points via call server s using e.g. ISUP signalling between the end points or exchanges and the call server s. The call servers set up connections via a concatenated series of paths or tunnels across an intermediate MPLS network via media gateways serving respective nodes in the MPLS network. User information packets are carried across the MPLS network by the attachment of an appropriate label, this label being removed on egress from the MPLS network to recover the original packet.

Claims (12)

1. A method of transporting a telecommunications information packet to an end point in a network incorporating a multiprotocol label switching network, the method including defining a plurality of first level paths across the multiprotocol label switching network, defining a second level path comprising a concatenated series of said first level paths attaching a label to the information packet indicative of said second level path at an ingress to the multiprotocol label switching network, transporting the labelled packet over said second level path, removing the label from the packet, and delivering the packet to the end point.
2. A method as claimed in claim 1, wherein said second level path provides a dynamically created end to end quality of service capability.
3. A method as claimed in claim 2, wherein said network is an Internet protocol network.
4. A method as claimed in claim 3, wherein said packets comprise ATM
cells.
5. A method as claimed in claim 4, wherein said packets comprise the adaptation and payload portions of ATM cells.
6. A method as claimed in claim 2 wherein said packets comprise frame structured information.
7. A method as claimed in claim 5, wherein said ATM cells conform to an ATM Adaptation Layer 1 or Adaptation Layer 2 format.
8. A telecommunications network incorporating a multiprotocol label switching network arranged to transport information packets between end points, the telecommunications network including means for defining a path across the multiprotocol label switching network, said path comprising a plurality of concatenated paths, means for attaching labels to the information packets indicative of said path at an ingress to the multiprotocol label switching network, transporting the labelled packets over said path, removing the labels from the packets, and delivering the packets to a said end point.
9. A telecommunications network as claimed in claim 6, wherein said multiprotocol label switching network incorporates a plurality of abstract nodes.
10. A telecommunications network as claimed in claim 7, wherein said concatenated paths comprise tunnels defined between said abstract nodes.
11. A telecommunications network as claimed in claim 10, wherein said nodes are served each by a connection manager whereby communications paths between the abstract nodes are established in said tunnels.
12. A telecommunications network incorporating a multiprotocol label switching network comprising a plurality of abstract nodes and arranged to transport information packets between end points, the telecommunications network including means for defining a first set of paths between pairs of said abstract nodes in the multiprotocol label switching network, means for defining a second level path comprising a plurality of concatenated paths from said first set of paths, means for attaching labels to the information packets indicative of said second level path at an ingress to the multiprotocol label switching network so as to transport the labelled packets over said defined second level path, and means removing the labels from the packets on egress from said second level path and for delivering the packets to a said end point.
CA2313904A 1999-07-16 2000-07-14 Supporting multiple services in label switched networks Expired - Lifetime CA2313904C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US09/354,651 US6882643B1 (en) 1999-07-16 1999-07-16 Supporting multiple services in label switched networks
US09/354,651 1999-07-16

Publications (2)

Publication Number Publication Date
CA2313904A1 true CA2313904A1 (en) 2001-01-16
CA2313904C CA2313904C (en) 2010-12-07

Family

ID=23394339

Family Applications (1)

Application Number Title Priority Date Filing Date
CA2313904A Expired - Lifetime CA2313904C (en) 1999-07-16 2000-07-14 Supporting multiple services in label switched networks

Country Status (4)

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US (1) US6882643B1 (en)
EP (1) EP1069742B1 (en)
CA (1) CA2313904C (en)
DE (1) DE60037368T2 (en)

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Also Published As

Publication number Publication date
EP1069742B1 (en) 2007-12-12
CA2313904C (en) 2010-12-07
DE60037368D1 (en) 2008-01-24
EP1069742A3 (en) 2003-09-24
US6882643B1 (en) 2005-04-19
EP1069742A2 (en) 2001-01-17
DE60037368T2 (en) 2008-04-03

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