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Data message transmitting method and node equipment based on MPLS TE tunnel

A technology of data message and transmission method, applied in the field of traffic engineering, can solve the problems of inability to meet the network resource layer-by-layer convergence, increase a lot, and have no bandwidth convergence capability, so as to simplify the routing and forwarding information setting process, reduce consumption, and improve the network. The effect of scalability

Active Publication Date: 2009-02-11
HUAWEI TECH CO LTD
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Problems solved by technology

[0007] The MPLS TE tunnel provides an end-to-end constant bandwidth tunnel, which itself has no bandwidth convergence capability. If it is deployed on the entire network, then for a network, the sum of the bandwidth resources at the edge of the entire network is the same as the network at the core of the network. Resources are equivalent or close to each other, thus, cannot meet the needs of layer-by-layer convergence of network resources
Since MPLS TE tunnels are deployed end-to-end, as the number of network nodes increases, there will be a problem of the number of tunnels being N squared. For example, if there are 100 nodes in the entire network and only one tunnel is built between any two nodes, the The number of tunnels is approximately: 100×(100-1). If the protection tunnels of TE FRR are added, the number of tunnels in the entire network will increase a lot

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  • Data message transmitting method and node equipment based on MPLS TE tunnel
  • Data message transmitting method and node equipment based on MPLS TE tunnel
  • Data message transmitting method and node equipment based on MPLS TE tunnel

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Embodiment Construction

[0038] An end-to-end MPLS TE tunnel is only an end-to-end tunnel function and cannot have tunnel switching capabilities. Therefore, the network deployment of an end-to-end MPLS TE tunnel is single-layer rather than hierarchical. If the MPLS TE tunnel is capable of tunnel switching, hierarchical MPLS TE tunnels can be implemented to converge bandwidth resources layer by layer in the entire network.

[0039] Therefore, the core of the present invention is: determine the switching node that needs to carry out MPLS TE tunnel switching, set the route forwarding information that different MPLS TE tunnels carry out tunnel switching at the switching node place, the switching node forwards the data message according to the route forwarding information in different Switch transmission in the MPLS TE tunnel.

[0040] The technical solution provided by the present invention will be further described below based on the core idea of ​​the present invention.

[0041] When a node is both the...

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Abstract

A method for transmitting data message based on MPLS TE tunnel includes confirming interchange node required to carry out MPLS TE tunnel interchange, setting different MPLS TE tunnel to carry out route retransmission information of tunnel interchange on interchange node, interchanging and transmitting data message in different MPLS TE tunnel according to route retransmission information.

Description

technical field [0001] The invention relates to the technical field of traffic engineering, in particular to a data message transmission method and node equipment based on an MPLS TE tunnel. Background technique [0002] MPLS TE (Multiprotocol Label Switching Traffic Engineering) technology collects link bandwidth information of the entire network by extending the IGP protocol, and uses the CSPF (Constrained Shortest Path First) algorithm to calculate an end-to-end tunnel connection that meets certain constraints, such as By specifying bandwidth information, MPLS TE technology can calculate an end-to-end tunnel that meets the bandwidth requirements and service type requirements, and reserves bandwidth resources at nodes along the tunnel. In the case of tight resources, MPLS TE can seize the bandwidth resources of low-priority LSP tunnels to meet the needs of large-bandwidth LSPs or important users. At the same time, the FRR (fast rerouting) technology based on MPLS TE can r...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/56H04L45/02
CPCH04L45/04H04L12/4633H04L45/50H04L63/0272H04L45/02
Inventor 董伟嗣程钢
Owner HUAWEI TECH CO LTD