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Automatic generation and maintenance method for inter-domain routing protocol traffic engineering link

A technology of traffic engineering and routing protocol, applied in the field of designing optical network communication, it can solve the problems of increasing the possibility of errors, wasting network resources and time, slow response, etc., so as to reduce the probability of artificial network failure and avoid manual operation. , the effect of enhancing stability

Inactive Publication Date: 2008-03-19
NANJING ZHONGXING XIN SOFTWARE CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This will lead to two main problems: (1) It is not sensitive to changes in the network, which in turn wastes network resources. For example, if a link in the network fails, it will usually not be triggered until a related alarm is generated. Corresponding processing to re-establish the TE link; and for the change of bandwidth and the change of the priority of the link, etc., the reaction will be more slow, which will undoubtedly lead to further waste of network resources and time; (2) due to the routing domain The TE link is completed by manual operation, therefore, the possibility of error is increased, and the bottleneck of business processing is also generated.
However, no relevant technical solutions have been proposed so far

Method used

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  • Automatic generation and maintenance method for inter-domain routing protocol traffic engineering link
  • Automatic generation and maintenance method for inter-domain routing protocol traffic engineering link
  • Automatic generation and maintenance method for inter-domain routing protocol traffic engineering link

Examples

Experimental program
Comparison scheme
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no. 1 example

[0036] In this embodiment, a method for automatically generating an inter-domain routing protocol traffic engineering link is provided.

[0037] As shown in Figure 1, the automatic generation method of the Inter-Domain Routing Protocol Traffic Engineering (DDRPTE) link according to the present embodiment comprises: Step S102, search the link state database of Interior Gateway Protocol (IGP), obtain all domain boundary routers ID; step S104, based on the ID of the domain border router, construct a query request for generating a DDRP TE link between inter-domain routers for query, and receive the query result; and step S106, generate a DDRP TE link according to the query result.

[0038] Wherein, in step S104, the following processing is further included: based on the ID of the domain border router, it is judged whether there is a certain constraint requirement on the DDRP TE link, wherein the constraint requirement may include at least one of the following: bandwidth, shared ris...

example 1

[0054] Example 1, under certain constraints, the generation of DDRP TE link (link):

[0055] In this example, it is assumed that the attribute of the link between IGP domain border router A and IGP domain border router C has been determined as {x, y, z}.

[0056] (11) Obtain boundary nodes: (corresponding to the above step S102)

[0057] By querying the database of the IGP protocol, all summary-LSAs are obtained, and by querying the relevant fields in the LSA, the node ID (that is, the border router ID) of the domain border router can be obtained, thereby, the router IDs of nodes A and C can be obtained;

[0058] (12) Construct and generate the query request of DDRP TE link: (corresponding to the above-mentioned step S104)

[0059] Since there are definite constraint requirements on the link in this example, a routing query is sent to CSPF according to the specified constraint, with the starting point being router A and the ending point being router C (of course, there may al...

example 2

[0079] Example 2, under the best possible constraints, the generation of DDRP TE link:

[0080] In this example, it is assumed that the attributes of the E-F link are {x1, y1, z1}, and the attributes of the C-E link are {x2, y2, z2}.

[0081] (21) Obtain boundary nodes:

[0082] By querying the database of the IGP protocol, all summary-LSAs can be obtained, and by querying the relevant fields in the LSA, the node ID of the domain border router can be obtained. At this point, the router IDs of nodes C and E can be obtained;

[0083] (22) Construct a query request to generate a DDRP TE link:

[0084] Send route query to CSPF (constrained shortest route first algorithm) computing module, the starting point of this route is router C, and end point is router E (certainly, also may be two-way link); If return query result is success, then execute (23 ), if the return query result is failure, then transfer to (24);

[0085] After the query is successful, execute step (23)

[008...

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Abstract

The invention discloses an automatic generation method of an inter-domain route protocol traffic engineering link, which includes: step S102, look up link status database of interior gateway protocol and acquire all domain border routers IDs; step S104, based on the domain border routers ID, construct and generate a search request of the inter-domain route protocol traffic engineering link among inter-domain routers, in order to search and accept search results; step S106, generate the inter-domain route protocol traffic engineering link, according to the search results. In addition, the invention also discloses an automatic maintenance method of the inter-domain route protocol traffic engineering link. Through the technical proposal thereof, the invention can feedback the network topotactic transformation results dynamically and quickly, effectively improve the network resources utilization rate, avoid the complex artificial operation, reduces the occurrence probability of artificial network failures and increases the network stability, by the realization of the automatic link generation.

Description

technical field [0001] The invention is designed in the field of optical network communication, and in particular, a method for automatic generation and maintenance of inter-domain routing protocol traffic engineering links. Background technique [0002] Nowadays, optical networks (for example, Optical Transport Network (Optical transmission network, OTN), wavelength-division multiplexing (Wavelength-division multiplexing, WDM), synchronous digital hierarchy (Synchronous digital hierarchy, SDH), or synchronous optical network (Synchronous optical network , SONET) transport network) has been widely used in the field of telecommunications. [0003] Automatic switched optical network (ASON for short) refers to a new generation of optical network that completes the automatic switching function under the control of routing and signaling. This network is also a research hotspot in the field of optical network in recent years. The introduction of ASON technology can not only enhan...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L29/06H04L12/56H04L12/755
Inventor 罗公明
Owner NANJING ZHONGXING XIN SOFTWARE CO LTD
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