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Load sharing method and equipment

A load sharing and packet forwarding technology, applied in digital transmission systems, electrical components, transmission systems, etc., can solve the problems of easily disordered packets, no load sharing, and ineffective load sharing, etc., so as to ensure orderly order. performance, load balancing

Inactive Publication Date: 2008-02-06
NEW H3C TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, as shown in Figure 2, it is possible to hash the first and second data streams to the path between B-C, and the path B-A-C is equivalent to the path between B-C, but for the path B-A-C For the forwarding of the first and second data streams, the path B-A-C does not play the role of load sharing
[0007] It can be seen from the above descriptions of packet-by-packet forwarding and flow-by-flow forwarding that for load sharing by packet, accurate load sharing can be achieved, but packets are easily out of order; for load sharing by flow, the sequence of packets can be guaranteed, However, it cannot be adjusted according to the network conditions, and it is possible that multiple streams occupy one path at the same time, which cannot effectively carry out load sharing.

Method used

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  • Load sharing method and equipment

Examples

Experimental program
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Embodiment 1

[0076] In this embodiment, the sharing method for each destination in the physical link is adopted. The entire load sharing process includes the establishment and maintenance of weighted forwarding tables and the process of forwarding data streams using weighted forwarding tables. The way to obtain packet statistics information is to receive the reported statistics information.

[0077] FIG. 5 is a specific flow chart of the load sharing method in Embodiment 1 of the present invention. As shown in Figure 5, the process includes:

[0078] In step 501, a weighted forwarding table is established in advance to store message forwarding information and weight values ​​corresponding to the message forwarding information.

[0079] In the per-destination sharing mode of this embodiment, the weighted forwarding table is shown in Table 2, wherein the message forwarding information includes the destination IP address and the outgoing interface, and the weighted value in this embodiment ...

Embodiment 2

[0112] In order to further improve the accuracy of load sharing, this embodiment adopts an accurate load sharing method. Specifically, after determining to perform load balancing, you can actively query the current packet forwarding volume in the cache for each outgoing interface capable of load sharing, and update the weighted value of the corresponding outgoing interface in the weighted forwarding table, and then according to the updated The weighted value selects the appropriate outbound interface for data flow forwarding. In this way, it can be ensured that when load sharing is performed, the weighted value corresponding to the outbound interface used reflects the real-time flow statistics result, so that load sharing can be performed more accurately.

[0113] In addition, in this embodiment, load sharing adopts the method of sharing physical links. That is to say, when counting the packet forwarding volume of the outgoing interface, all the packets on the outgoing interfa...

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Abstract

The present invention discloses a load sharing method of presetting a weighting value for message transmission information pointing to message transmitting interface. The method comprises the steps as follows: acquiring statistics information transmitted in the data flow; renewing the weighting value of the message transmission information according to the statistics information; ensuring the connector to share the load when the load is sure to be shared when transmitting the data flow; choosing the exit interface to transmit the data flow according to the weighting value corresponding with the message transmission information of the exit connector; transmitting the data flow from the exit connector. The present invention also discloses an exchange device in the network. The present invention comprises a weighting transmission manage unit, an exit connector choosing unit and a data flow transmission unit. The present invention can ensure the orderly transmission of the message and ensure the accurate load share.

Description

technical field [0001] The invention relates to the technical field of communication message routing, in particular to a load sharing method and device. Background technique [0002] At present, there are mainly equal-cost routing technology and non-equivalent routing technology to realize road load sharing. [0003] Among them, the non-equivalent routing technology is: there are paths to a destination through several different links, these paths have different costs, and IP packets are sent in turn in proportion to the link costs among these links . The advantage of load sharing realized by non-equivalent routing technology is to further improve the link utilization rate. The disadvantage is that the protocol and vendor support are relatively small, which is easy to cause routing loops, and is not recommended. [0004] The equal-cost routing technology is: there are multiple paths with the same cost to the destination, and packets can be distributed to different paths to ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/56H04L12/803H04L12/931
Inventor 尹娜祁正林刘刀桂薛聪赵里遥
Owner NEW H3C TECH CO LTD
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