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Reduced complexity multiprotocol label switching

A multi-protocol label and label switching technology, applied in the field of multi-protocol label switching (MPLS) systems

Inactive Publication Date: 2014-07-02
希尔纳公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But because of its design, MPLS requires many complex protocols

Method used

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  • Reduced complexity multiprotocol label switching
  • Reduced complexity multiprotocol label switching
  • Reduced complexity multiprotocol label switching

Examples

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Embodiment Construction

[0013] In various exemplary embodiments, various changes have occurred in the current MPLS operating system such that a disjoint set of one or more MPLS labels is uniquely and specifically only associated with one switch, that is, each switching node is assigned a label from RFC3032 One or more non-overlapping labels in a 20-bit label space to bind to a specific service endpoint; this then allows these labels to embody the core properties of the Destination Address (DA) in the network subdomain for which they are used. A central property is that these DA labels are constant for a given transmission path over the entire sub-domain, thus remaining constant at any point in the network. This is possible because while flat addressing schemes have historically required huge label spaces to represent individual Internet Protocol (IP) prefixes, the increasing use of virtualization and accompanying network architectures means that labels need only be assigned to A node at the boundary ...

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Abstract

A reduced complexity Multiprotocol Label Switching (MPLS) method, 30, a MPLS network element, 40, and a MPLS network, 10, utilize an MPLS operating regime whereby disjoint sets of one or more MPLS labels are uniquely and specifically associated with just one switch, i.e. each switch node is assigned one or more non-overlapping labels from the RFC 3032 20 bit label space to bind to particular service end-points; which then enables these labels to embody the core properties of a destination address (DA) in the network sub-domain in which they are used. The central property is that these DA labels are constant for a given forwarding path across the entire sub-domain, remaining unchanged at any extends in the network. Once that is achieved, any and all hop-by-hop signaling protocols are unnecessary, since there is no need for label swapping, and the label-switching-node binding information can be flooded by interior routing protocols only.

Description

technical field [0001] The present disclosure generally relates to network systems and methods. More specifically, the present disclosure relates to reduced complexity Multiprotocol Label Switching (MPLS) systems and methods. Background technique [0002] Multiprotocol Label Switching (MPLS) is a mechanism applied in networks to direct data from one network node or network element to the next network node or network element based on locally significantly short path labels rather than significantly long network addresses across the entire network , thus avoiding complex lookups in the routing table. For example, MPLS is described in part in Request for Comments (RFC) 3032 "MPLS Label Stack Encoding" (January 2011), the contents of which are incorporated herein by reference. The use and availability of RFC3032 compliant, MPLS-capable hardware for packet switching is ubiquitous, and the industry recognizes it as a cost-effective technology for packet delivery. Even within so...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/723H04L45/50
CPCH04L45/507H04L45/50
Inventor 伊恩·哈米什·邓肯奈杰尔·劳伦斯·布拉格
Owner 希尔纳公司
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