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Data forwarding method and system based on T-MPLS network

A technology of T-MPLS and forwarding method, which is applied in the field of data communication, can solve the problems of affecting forwarding performance and consuming hardware processing resources, and achieve the effect of improving forwarding performance and saving hardware processing resources

Active Publication Date: 2009-07-15
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For T-MPLS network services, the network egress PE needs to check the label table twice before it can forward user data correctly. Therefore, more hardware processing resources are consumed and forwarding performance is affected.

Method used

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  • Data forwarding method and system based on T-MPLS network
  • Data forwarding method and system based on T-MPLS network
  • Data forwarding method and system based on T-MPLS network

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Embodiment Construction

[0043] The technical solutions of the present invention will be further elaborated below in conjunction with the accompanying drawings and specific embodiments.

[0044] The present invention divides the label of the user data into different types according to the label value, and it can be judged whether the user data has reached the last hop device of the T-MPLS network tunnel, that is, the egress PE, and then the user data is forwarded through the egress PE Exit the current T-MPLS network.

[0045] According to the forwarding of user data in the T-MPLS network, the network devices in the T-MPLS network can be divided into ingress PEs, intermediate network devices and egress PEs.

[0046] When user data enters the current T-MPLS network through the ingress PE, it is encapsulated with two layers of labels by the ingress PE. The inner label corresponds to the service mapped by the user data in the T-MPLS network tunnel, so the inner label can also be called Service label; the...

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Abstract

The invention provides a data forwarding method on the basis of a transport - multiple protocol label switch (T-MPLS) network and a system thereof. According to the label value, labels of user data are classified into an A type, a B type and a C type; and labels of A type is set as internal layer labels and the labels of B type and C type are set as external layer labels; user data enter the T-MPLS network and are packaged with an internal layer label and an external layer label; when the external layer label of the user data is determined to be a C type label according to the label classification, a service label table of the current network appliance is read through the internal layer label, and the next-hop forwarding address of the user data after leaving the current T-MPLS network is searched; the internal layer label and the external layer label of user data are stripped, the user data with the internal layer label and the external layer label stripped if forwarded according to the searched next-hop forwarding address; therefore, hardware processing resources can be saved on the basis of the method and system of the invention.

Description

technical field [0001] The present invention relates to data forwarding technology in the field of data communication, in particular to a data forwarding method and system based on Transport Multi-Protocol Label Switching (T-MPLS, Transport MPLS) network. Background technique [0002] T-MPLS belongs to the multi-protocol label switching (MPLS, Multi-Protocol Label Switch) technology in the transport network, which transforms the connectionless data network into a connection-oriented network. T-MPLS Compared with MPLS, T-MPLS simplifies the processing of the data layer, strengthens operation, management and maintenance (OAM, Operations Administration and Maintenance) and network survivability technology. [0003] T-MPLS network can be divided into three levels: user plane, responsible for data forwarding; control plane, responsible for establishing, tearing down and maintaining end-to-end connections, etc.; management plane, responsible for management of billing, security, pe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/56H04L12/46H04L12/24H04L29/06H04L45/50
Inventor 钱勇
Owner ZTE CORP
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