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Negotiation method of datapath treatment for end-to-end interworked network traffic

A data path, communication network technology, applied in the field of network communication, can solve problems such as no specification or reference

Inactive Publication Date: 2006-12-20
ALCATEL LUCENT SAS
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Moreover, the aforementioned prior art does not specify or refer to any procedure for data path interworking performed at the MPLS / IP interface edge nodes of the MPLS network

Method used

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  • Negotiation method of datapath treatment for end-to-end interworked network traffic
  • Negotiation method of datapath treatment for end-to-end interworked network traffic

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Embodiment Construction

[0010] refer to figure 1 , which shows a typical network structure that includes two networks with different network protocols, such as an ATM network 10 and an MPLS / IP or other packet-switched network 20 . The first customer edge device 2 ("CE 1 ”) can be connected to the ATM network 10 via an ATM source edge node 4, such as a provider facing an ATM edge node or user (“PAE”). One or more edge nodes 6a and 6b of the ATM network 10, such as an interface connection or gateway node (“AE 1 " and "AE 2 ”), can be connected to one or more corresponding edge nodes 8a and 8b of the MPLS / IP network 20 (“ME 1 " and " ME 2 "). Edge nodes 6a, 6b and 8a, 8b can be connected by protocols known to those skilled in the art, for example by ATM Inter-Network Interface (AINI), ATM Forum or ITU-T User Network Interface (UNI), or PNNI compatible interface. The MPLS / IP destination edge node 12, such as a user facing the MPLS / IP edge node ("PME"), connects the MPLS / IP network 20 to another user...

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Abstract

The invention provides a method for negotiating datapath treatment for traffic sourced from a first communications network over an end-to-end path in respect of a path segment provided for said traffic in a second communications network, the path segment being requested for a first node of the second communications network and being targeted to a second node of the second communications node. The method comprises: for the first node, notifying that a datapath capability for the path segment is one for selection for the second node; communicating datapath capabilities associated with the first node; selecting, for the second node, a datapath capability from the datapath capabilities so communicated; communicating the datapath capability so selected for the second node back to the first node; and wherein the path segment is established using a signaling protocol of the second communications network. The invention may also be implemented in a corresponding communications node.

Description

technical field [0001] The present invention relates generally to the field of network communications, and more particularly, to a method for negotiating data path handling for end-to-end traffic traversing communication networks with different network protocols. For example, the aforementioned method may be performed between a source or a first user facing an edge node of a downstream network and a destination or a second user facing an edge node of the same network. Background technique [0002] In the field of network communications, it is known to configure virtual connections such as Soft Permanent Virtual Connections (SPVCs) to provide end-to-end communications in Asynchronous Transfer Mode (ATM) networks and in Frame Relay (FR) networks. As known to those skilled in the art, the feature of SPVC is that it can be configured from edge network nodes to where user equipment or other access lines can connect. Also, virtual connections such as SPVC allow communications to ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/46H04L29/06
CPCH04L45/50H04L45/04H04L2012/563H04L2012/5665
Inventor S·麦卡利斯特M·艾萨维
Owner ALCATEL LUCENT SAS
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