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Multipath load balance implementing method and data forwarding apparatus

A technology of load balancing and implementation method, applied in the field of data communication, which can solve problems affecting network performance, traffic oscillation, and aggravating frequent changes of the same service flow path, so as to improve network performance, increase minimization, and maintain path integrity.

Active Publication Date: 2011-06-15
CHINA TELECOM CORP LTD
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Problems solved by technology

In addition, in the above traffic engineering based on state-dependent load balancing adaptive multi-path routing, the load distribution is constantly updated according to the real-time congestion monitoring results, resulting in the possibility that the same service flow may be rerouted or distributed back and forth among multiple paths, resulting in Phenomenon known as traffic oscillation behavior
Traffic oscillation may further aggravate the frequent changes of the same service flow path, seriously affecting network performance

Method used

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  • Multipath load balance implementing method and data forwarding apparatus
  • Multipath load balance implementing method and data forwarding apparatus
  • Multipath load balance implementing method and data forwarding apparatus

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Embodiment Construction

[0033] The present invention will be described more fully hereinafter with reference to the accompanying drawings, in which exemplary embodiments of the invention are illustrated.

[0034] Fig. 2 is a flow chart showing an embodiment of the implementation method of multipath load balancing in the present invention.

[0035] As shown in FIG. 2 , at step 201 , for the received input traffic, the CRC16-based hash function separates the input traffic into corresponding M stream buffers. Specifically, the five-tuple in the message, that is, source address, destination address, source port, destination port, and protocol type, is input into a CRC16-based hash function as an input parameter, and the message is converted to Split into different stream buffers. The table-based hash method separates streams, which can maintain the integrity of each stream and avoid packet disorder in each stream.

[0036] In step 203, measure and obtain at least a packet queuing delay metric and a pac...

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Abstract

The invention discloses a method for realizing multipath load balance in an MPLS network and a data transmitting device. The method comprises the following steps: input flow is separated into a plurality of flow buffers; the least message queuing delay metrics and the loss rate metrics of each label switched path are measured; and according to the least message queuing delay metrics and the loss rate metrics of the label switched path, the flow in the buffer is mapped into the label switch path. The flow separation is simple and high-efficient, and the message queuing delay metrics and the loss rate metrics can reflect the load on each LSP better, thus realizing the multipath load balance. The method has good stability and expandability and is easy to realize in an operation network.

Description

technical field [0001] The invention relates to the technical field of data communication, in particular to a method for realizing multipath load balancing in a multi-protocol label switching network and a data forwarding device. Background technique [0002] Traditional interior gateway (IGP) routing protocols select routes based on Shortest Path First (SPF), such as Intermediate System-to-Intermediate System (IS-IS), Open Shortest Path First (OpenShortest Path First, OSPF). The shortest path first routing selects the path based on the network topology, without considering the utilization of network resources and traffic characteristics. As a result, for a given source and destination end system, even if there are multiple possible paths in the network that meet the bandwidth requirements of the service flow between the end systems The routing protocol still chooses the shortest path for forwarding. Shortest path first routing is an important cause of network congestion. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/56H04L12/803
Inventor 何晓明徐建锋陈文华朱永庆
Owner CHINA TELECOM CORP LTD
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