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Method for determining abstract topological link attribute for optical network hierarchical route

A link attribute, abstract technology, applied in the multiplexing system selection device, electromagnetic wave transmission system, electrical components and other directions, can solve the problem that the abstract link has no existing methods to use.

Inactive Publication Date: 2004-09-15
FENGHUO COMM SCI & TECH CO LTD
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Problems solved by technology

[0011] Currently, no existing methods are available for determining the properties of abstract links

Method used

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  • Method for determining abstract topological link attribute for optical network hierarchical route
  • Method for determining abstract topological link attribute for optical network hierarchical route
  • Method for determining abstract topological link attribute for optical network hierarchical route

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Embodiment Construction

[0030] Topology aggregation and link abstraction technology is one of the core technologies in hierarchical routing. Through the topology aggregation technology, the topology in this domain is abstracted, and the complex topology becomes relatively simple, and then the spokesperson node in the domain broadcasts this topology in the high-level routing domain. Generally speaking, the border nodes of RA are logically reachable, so the topology aggregation method generally chooses "full connection abstraction". The fully connected abstraction has fewer restrictions and constraints on the network, and is also conducive to the calculation of upper-layer network routes.

[0031] The abstract method of network fully connected topology is as follows: figure 1 shown. The network 10 in the figure is the actual network topology, node B101, node C102, node D103, node E104 are border nodes, node A110 of the spokesperson, node R121, node S122, node T123 are general nodes in the network. L...

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Abstract

The method includes following steps: configuring route domain of network and determining boundary nodes and spokesman nodes of route domain; through 'flood' procedure in route protocol, all nodes in route domain obtain full topology information of the route domain; based on configuration information of boundary nodes and network topology information in the route domain, the spokesman nodes generate full connection conglomerate topology of this route domain, and obtain abstracting link of connection between conglomerate topology route and node; calculating available bandwidth attribute of abstracting link; spokesman nodes carries out 'flood' treatment for information of conglomerate topology and abstracting link in route domain in next higher layer. The invention can determine transmitting capacity effectively. Each node obtains transmitting capacity of any route domain in whole network by referring spokesman node of route domain in different layer.

Description

technical field [0001] The invention relates to a method for determining link attributes in optical transmission technology, in particular to a method for determining link attributes in optical network hierarchical routing. Background technique [0002] Automatically switched optical network (ASON) technology is the development direction of the current optical network. ASON is logically divided into three planes, namely the transport plane, control plane and management plane. The transmission plane is responsible for the end-to-end transmission of user data, which can be based on SDH or Optical Transport Network (OTN). Control plane functions mainly include fast establishment and teardown of end-to-end connections, distributed modification and maintenance of topology database, and distributed link resource management. The management plane provides management of the other two planes. [0003] The control plane is implemented using three protocols, namely Link Management Pr...

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Application Information

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IPC IPC(8): H04L45/02H04L47/41H04Q3/52H04Q11/00
Inventor 王志峰陈晓辉孙刚
Owner FENGHUO COMM SCI & TECH CO LTD
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