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Gmpls control of ethernet

A general-purpose multi-protocol, label-switching technology applied in the field of Ethernet-enabled switches

Inactive Publication Date: 2008-12-17
NORTEL NETWORKS LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

GMPLS signaling is well suited for establishing labeled paths, but it requires minimal IP control plane and IP connectivity, so it is suitable for certain situations that require a large number of paths or dynamic path management

Method used

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  • Gmpls control of ethernet
  • Gmpls control of ethernet

Examples

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Embodiment Construction

[0023] Embodiments of the present invention are described below by way of examples with reference to FIGS. 1-6.

[0024] In addition to the well-known GMPLS terminology, the terminology of IEEE 802.1 and the following terms are used:

[0025] MAC: backbone network MAC address

[0026] VID: backbone network VLAN ID

[0027] B-VLAN: backbone network MAC address

[0028] C-MAC: Client MAC

[0029] C-VID: Client VLAN ID

[0030] DA: destination address

[0031] ESP: Ethernet Switched Path

[0032] PBT: independent VLAN learning

[0033] PBB: Carrier Backbone Bridge

[0034] PBT: carrier backbone network transmission

[0035] SA: source address

[0036] S-VID: Service VLAN ID

[0037] Ethernet consists of a very simple, reliable data plane that is optimized and mass-produced. In order to enable 802.1 to be used in large-scale networks, as shown in Figure 1, a hierarchical structure between bridges has been defined. The Client Bridge 102 at the edge of the network define...

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Abstract

Ethernet provider backbone transport (PBT) paths are controlled utilizing Generalized Multi-protocol Label Switching (GMPLS) signaling protocol. A path between edge nodes is identified by a combination of a VID and destination MAC address in a VID / MAC tuple populated in the forwarding tables of intermediary nodes. To establish the PBT path, a path calculation is performed from the originator node to the terminator node through the network. The originating node then sends a GMPLS label object with a suggested VID / MAC to identify the path to the terminator. The intermediary nodes or bridges forward the object to the terminating node. The terminating node then offers a VID / MAC tuple in a GMPLS label object in response. When the intermediary nodes forward the response from the terminating node to the originator, the appropriate forwarding labels are then installed in the forwarding tables of each node utilizing the associated VID / MAC tuples.

Description

technical field [0001] The present invention relates to general multiprotocol label switching signaling, and in particular to configuring Ethernet-enabled switches for configuring Ethernet switching paths. Background technique [0002] The performance of Ethernet switches continues to increase. As a result, Ethernet's role in networks in other technology areas such as Synchronous Network / Synchronous Digital Hierarchy (SONET / SDH) Time Division Multiplexing Mode (TDM) and Asynchronous Transfer Mode (ATM) over optical fiber is rapidly expanding. The question of how Ethernet will evolve and what capabilities it can provide in these areas is still a work in progress. [0003] Ethernet as defined today is a system. It is well understood how spanning tree, data plane flooding, and media access control (MAC) learning combine to populate forwarding tables and produce resilient any-to-any behavior in bridged networks. What is less obvious is that the resulting behavior is simply th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L29/06H04L12/413H04L29/04H04L69/14
CPCH04L12/4641H04L45/24H04L45/50H04L12/413H04L69/14H04L45/02
Inventor D·阿伦D·费迪克
Owner NORTEL NETWORKS LTD
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