Path computation element central controllers (pceccs) for network services

A path calculation unit and controller technology, applied in data exchange network, electrical components, digital transmission system, etc., can solve the problem that it is not easy to add new services

Active Publication Date: 2018-01-26
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Also, it may not be easy to add new services to an existing MPLS network

Method used

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  • Path computation element central controllers (pceccs) for network services
  • Path computation element central controllers (pceccs) for network services
  • Path computation element central controllers (pceccs) for network services

Examples

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Embodiment Construction

[0030] It should be understood at the outset that, although an illustrative implementation of one or more embodiments is provided below, the disclosed systems and / or methods may be implemented using any number of techniques, whether currently known or in existence. The invention should in no way be limited to the illustrative implementations, drawings, and techniques illustrated below, including the exemplary designs and implementations illustrated and described herein, but rather be within the scope of the appended claims and their equivalents Modified within the full range of .

[0031] figure 1 is a schematic diagram of the MPLS network 100 . Network 100 includes a number of nodes 120 interconnected by a number of links 130 . Nodes 120 are shown as provider edge (PE) 1, provider (P) 1, P2, area border router (ABR) 1, ABR2, P3, P4, ABR3, ABR4, P5, P6, and PE2. The infrastructure of network 100 may be any type of network, such as an electrical network, an optical network,...

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Abstract

The invention discloses path computation element central controllers (PCECCS) for network services. According to the invention, a method implemented by a path computation element centralized controller (PCECC), the method comprises: receiving a service request to provision for a service from a first edge node and a second edge node in a network; computing a path for a label switched path (LSP) from the first edge node to the second edge node in response to the service request; reserving label information for forwarding traffic of the service on the LSP; and sending a label update message to athird node on the path to facilitate forwarding of the traffic of the service on the path, wherein the label update message comprises the label information.

Description

[0001] Statement Regarding Research or Development Sponsored by the Federal Government [0002] Not applicable. [0003] Refer to Microfiche Addendum [0004] Not applicable. Background technique [0005] Multiprotocol label switching (Multiprotocol label switching, MPLS) networks are widely deployed in service provider networks. Current MPLS networks are difficult to operate due to their use of label distribution protocol (LDP) and resource reservation protocol (RSVP)-traffic engineering (TE) (RSVP-TE) MPLS signaling protocols and maintain. In addition, each network device in the MPLS network needs to maintain a large number of states of established label switched paths (label switched paths, LSPs). Additionally, it may not be easy to add new services to an existing MPLS network. [0006] Software defined networking (SDN) is a networking architecture that decouples the control plane from the data plane. Decoupling allows network control to be centralized, enabling effic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/723H04L12/751H04L45/50H04L45/02H04L45/42H04L45/74H04L45/741H04L47/724
CPCH04L45/505H04L45/507H04L45/74H04L45/741H04L63/0272H04L45/64H04L45/54H04L45/50H04L45/04H04L12/4641H04L45/42H04L45/68H04L47/724H04L45/38
Inventor 赵强林黎仁蔚
Owner HUAWEI TECH CO LTD
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