Method of network fault recovery crossing over connections in multiple domains

A technology for fault recovery and network failure. It is applied in data exchange networks, digital transmission systems, electrical components, etc. It can solve problems such as large network scale, affecting recovery efficiency, and complex computing, and achieve the effect of optimal use and rational use of large resources.

Active Publication Date: 2006-07-05
ZTE CORP
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Problems solved by technology

[0007] (1) The inter-domain subnet connection protection technology can only recover from link failures, and does not consider the protection of gateway network element failures
[0008] (2) When the gateway fails, if the fault recovery is carried out in a larger recovery domain, the network scale involved in the routing calculation and the connection establishment of each network element is very large, and the calculation is complicated, which affects the recovery efficiency
[0009] (3) The existing recovery technology literature patents do not take into account how to effectively recover from various faults between domains. Although

Method used

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  • Method of network fault recovery crossing over connections in multiple domains
  • Method of network fault recovery crossing over connections in multiple domains
  • Method of network fault recovery crossing over connections in multiple domains

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[0039] The implementation of the technical solution of the present invention will be further described in detail below in conjunction with the accompanying drawings:

[0040] In order to facilitate the description and understanding, the concept of virtual connection of the present invention is explained and explained first:

[0041] Virtual connection: Responsible for establishing a cross-network connection in the control plane. From the perspective of the control plane, the link connections that make up the connection and the cross-relationship of the network elements have been determined, but in the transmission plane network elements, there is no corresponding cross-connection of the network elements, and the link connections that make up the connection can be allocated or be allocated on the transmission plane. Installed, or not assigned or installed. Compared with the virtual connection, the connection in the present invention usually is a real connection. A real connection i...

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Abstract

Its system consists of: a transmission platform including a network composed of multi net elements that are used to assign and build links, and to build connection between subnets; and a control platform including multi control nodes. Each net element in the transmission platform corresponds to a control node. The invention can automatically build the static or dynamic protective connection used to recover the inter-domain failure by building cross-domain normal connection, determining intra-domain protection mechanism, and determining inter-domain protection mechanism.

Description

technical field [0001] The present invention relates to a general transport network, including a network fault recovery method in the field of transport networks such as IP transport network, Ethernet, ATM network, SDH and OTN, and in particular to a method for effectively utilizing network bandwidth resources to establish cross-domain normal connections and protection The method of connection not only guarantees business recovery in case of intra-domain failures, but more importantly, effectively restores services and fully optimizes the use of network resources when inter-domain failures affect services. Background technique [0002] According to the current ITU standard recommendations G.841 and G.842, the transport network adopts static protection methods for fault recovery methods. These methods establish a corresponding protection connection for an end-to-end connection, or allocate resources for the protection connection. The end-to-end connection here can be a single...

Claims

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Application Information

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IPC IPC(8): H04L12/24
Inventor 刘建国马恒杨发明高峰
Owner ZTE CORP
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