CA2300343A1 - Label switched media gateway and network - Google Patents

Label switched media gateway and network Download PDF

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Publication number
CA2300343A1
CA2300343A1 CA002300343A CA2300343A CA2300343A1 CA 2300343 A1 CA2300343 A1 CA 2300343A1 CA 002300343 A CA002300343 A CA 002300343A CA 2300343 A CA2300343 A CA 2300343A CA 2300343 A1 CA2300343 A1 CA 2300343A1
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CA
Canada
Prior art keywords
network
traffic
tunnel
tunnels
subscriber
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
CA002300343A
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French (fr)
Other versions
CA2300343C (en
Inventor
Roy Mauger
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.)
Genband US LLC
Original Assignee
Nortel Networks Ltd
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 Ltd filed Critical Nortel Networks Ltd
Publication of CA2300343A1 publication Critical patent/CA2300343A1/en
Application granted granted Critical
Publication of CA2300343C publication Critical patent/CA2300343C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q11/00—Selecting arrangements for multiplex systems
    • H04Q11/04—Selecting arrangements for multiplex systems for time-division multiplexing
    • 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
    • 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
    • H04L45/02—Topology update or discovery
    • 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
    • H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
    • H04L69/16—Implementation or adaptation of Internet protocol [IP], of transmission control protocol [TCP] or of user datagram protocol [UDP]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
    • H04L69/16—Implementation or adaptation of Internet protocol [IP], of transmission control protocol [TCP] or of user datagram protocol [UDP]
    • H04L69/168—Implementation or adaptation of Internet protocol [IP], of transmission control protocol [TCP] or of user datagram protocol [UDP] specially adapted for link layer protocols, e.g. asynchronous transfer mode [ATM], synchronous optical network [SONET] or point-to-point protocol [PPP]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
    • H04Q2213/13034—A/D conversion, code compression/expansion
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
    • H04Q2213/13196—Connection circuit/link/trunk/junction, bridge, router, gateway
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
    • H04Q2213/13204—Protocols
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
    • H04Q2213/13339—Ciphering, encryption, security
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
    • H04Q2213/13348—Channel/line reservation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
    • H04Q2213/13372—Intercepting operator
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
    • H04Q2213/13389—LAN, internet

Abstract

A network arrangement for delivering IP services to subscribers comprises a core network, a plurality of label switched media gateways coupled to the network and each providing an interface for one or more subscriber terminals. Call servers associated with the network are used to establish connections between pairs of gateways, these connections being routed across the core network via tunnels established therein. The tunnels are exclusively reserved for traffic between the label switched media gateways sa as to provide security of that traffic from third party access and to provide a guaranteed quality of service. Because traffic is accepted into a tunnel only if bandwidth is available in that tunnel, firm and meaningful quality of service guarantees can be given to users.

Claims (16)

1. A network arrangement for delivering Internet Protocol (IP) packet services to subscribers, wherein said packet services are transported in tunnels established across the network whereby to provide security of that traffic from third party access and to provide a guaranteed quality of service.
2. A network arrangement for delivering IP services to subscribers, the arrangement comprising a core network, a plurality of label switched media gateways coupled to the network and each providing an interface for one or more subscriber terminals, a plurality of call servers associated with the network and arranged to establish connections between pairs of said gateways, and wherein said connections are routed across the core network via tunnels established therein, said tunnels being exclusively reserved for traffic between the label switched media gateways so as to provide security of that traffic from third party access and to provide a guaranteed quality of service.
3. A network arrangement for delivering IP services to subscribers, the arrangement comprising a core network, a plurality of label switched media gateways coupled to the network via respective edge nodes and each providing an interface for one or more subscriber terminals, a plurality of tunnels arranged in the Core network in a full mesh between said edge nodes, each said tunnel having a predetermined traffic handling capacity and each being exclusively reserved for carrying traffic between a respective pair of said edge nodes, a plurality of call servers associated with the network and arranged to establish connections between pairs of said gateways via the respective edge nodes and tunnel, and wherein said calf servers are arranged to determine the traffic occupancy of each said tunnel so as to accept new traffic into that tunnel only if sufficient capacity is available in that tunnel so as to provide a guaranteed quality of service for accepted traffic.
4. A network arrangement as claimed in claim 2, wherein said tunnels comprise multi-protocol label switched (MPLS) tunnels.
5. A network arrangement as claimed in claim 4, wherein each said tunnel comprises first and second tunnel portions coupled via a network node therebetween.
6. A network arrangement as claimed in claim 5, wherein said core network comprises an ATM network.
7. A network arrangement as claimed in claim 6, wherein at feast one said gateway provides subscriber access to a voice network via the core network.
8. A network as claimed in claim 7, wherein one or more said terminals are coupled to the respective gateways via digital subscriber line access multiplexers (DSLAM).
9. A network as claimed in claim 8, wherein a plurality of said terminals are coupled to a said gateway via a campus local area network.
10. A label switched media gateway for controlling subscriber access to a connectionless core network in which user traffic is routed via tunnels established therein, the gateway providing an interface between a plurality of subscriber terminals and the network, and being arranged to route user traffic across the network via tunnels of guaranteed capacity reserved for that traffic.
11. A label switched media gateway for controlling subscriber access to a connectionless (IP) core network in which user traffic is routed via tunnels established therein, the gateway providing an interface between a plurality of subscriber terminals and the network, and being arranged to route user traffic across the network via tunnels of guaranteed capacity reserved for that traffic, the gateway comprising a plurality of proxies for translating IP

addresses between the network and encapsulated layer 3 addresses, the latter constituting an address space which is allocated dynamically for session services to said subscribers.
12. A method delivering IP packet services to network subscribers, the method comprising establishing tunnels in the network, transporting said services in the tunnels whereby to provide security of that traffic from third party access, and accepting traffic into a said tunnel only where capacity is available so as to provide a guaranteed quality of service to traffic accepted into that tunnel.
13. A method of controlling subscriber access to a connectionless network so as to provided controlled delivery of services to that subscriber, the method comprising routing traffic to and from said subscribers via tunnels established across the network, and controlling admission to a said tunnel by determining the currently available capacity of that tunnel so as to provide quality of service guarantees to traffic accepted into the tunnel.
14. A method of controlling subscriber access via edge nodes to a connectionless packet network so as to provided controlled delivery of IP packet services to the subscribers, the method comprising establishing a plurality of tunnels arranged in the network in a full mesh between said edge nodes, each said tunnel having a predetermined traffic handling capacity and each being exclusively reserved for carrying traffic between a respective pair of said edge nodes, determining in response to each subscriber request for service the available capacity of a said tunnel in which the subscriber traffic is to be routed, and accepting that subscriber request for service only if sufficient capacity is available in that tunnel so as to provide quality of service guarantees to accepted traffic.
15. A method as claimed in claim 14, an including appending two labels to each IP
packet, the first label identifying the tunnel to be used, and the second identifying the destination gateway for that packet.
16. A method as claimed in claim 15, wherein, for virtual private intranet (VPI) access, a tunnel is established between the VPI and the gateway, and wherein routing is performed at Layer 3 using VPI addresses to access the established tunnel.
CA2300343A 1999-03-10 2000-03-09 Label switched media gateway and network Expired - Lifetime CA2300343C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GBGB9905509.7A GB9905509D0 (en) 1999-03-10 1999-03-10 Label switched media gateway and network
GB9905509.7 1999-03-10

Publications (2)

Publication Number Publication Date
CA2300343A1 true CA2300343A1 (en) 2000-09-10
CA2300343C CA2300343C (en) 2010-05-18

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CA2300343A Expired - Lifetime CA2300343C (en) 1999-03-10 2000-03-09 Label switched media gateway and network

Country Status (5)

Country Link
US (1) US6778494B1 (en)
EP (1) EP1065858B1 (en)
CA (1) CA2300343C (en)
DE (1) DE60025080T2 (en)
GB (1) GB9905509D0 (en)

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Also Published As

Publication number Publication date
EP1065858A3 (en) 2003-04-02
EP1065858B1 (en) 2005-12-28
GB9905509D0 (en) 1999-05-05
CA2300343C (en) 2010-05-18
DE60025080T2 (en) 2006-06-29
US6778494B1 (en) 2004-08-17
DE60025080D1 (en) 2006-02-02
EP1065858A2 (en) 2001-01-03

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