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A method and device for scheduling aggregated links in a packet switching network

A packet-switching network and aggregated link technology, applied in the field of aggregated link scheduling, can solve problems such as user data loss, LSP(s) not being handled well, and high cost

Active Publication Date: 2018-10-26
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are two flaws in doing this: first, the resources with low priority are preempted, and the cost of being preempted is not weighed; second, the preempted LSP(s) are not properly processed
The advantage of this scheme is that it can avoid the loss of service data flow when the high-priority link on the aggregated link is preempted, but it does not consider the cost of preempting the low-priority link and whether Being able to re-preempt or get the resource situation, but only consider how the high priority preempts the low priority link without data loss, so it will still result in a large cost and loss of user data on other preempted links

Method used

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  • A method and device for scheduling aggregated links in a packet switching network
  • A method and device for scheduling aggregated links in a packet switching network

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0058] This implementation example describes the implementation process of the link aggregation scheduling method "when a unidirectional LSP is created passing through an aggregated link".

[0059] Assume that in this embodiment, the current main status information of the aggregated link consists of the following three sets of values:

[0060] 1) Link1-1 (100M, 0M), Link1-2 (100M, 0M);

[0061] 2) Link1(0M);

[0062] 3) LSP1 (1, 20M, Link1-1), LSP2 (3, 20M, Link1-1), LSP3 (5, 30M, Link1-1), LSP4 (5, 30M, Link1-1), LSP5 (1, 30M, Link1-2), LSP6(3, 30M, Link1-2), LSP7(5, 10M, Link1-2), LSP8(5, 10M, Link1-2), LSP9(5, 20M, Link1-2) .

[0063] Now LSP10 is established in the network through distributed RSVP-TE signaling (its establishment priority level is 4, and its CIR is 30M). After routing calculation, LSP10 needs to go through Link1. When reaching the aggregated link endpoint, refer to figure 2 As shown, the flow chart of the steps to implement the link aggregation contro...

Embodiment 2

[0073] This implementation example describes the implementation process of LSP rescheduling when the link aggregation is preempted when a unidirectional LSP is created and passes through an aggregated link.

[0074] Assume that the current main status information of the aggregated link in this embodiment consists of the following three sets of values:

[0075] 1) Link1-1 (50M, 0M), Link1-2 (50M, 10M);

[0076] 2) Link1 (10M);

[0077] 3) LSP1 (3, 10M, Link1-1), LSP2 (4, 20M, Link1-1), LSP3 (4, 10M, Link1-1), LSP4 (5, 10M, Link1-1), LSP5 (2, 20M, Link1-2), LSP6 (3, 10M, Link1-2), LSP7 (6, 10M, Link1-2).

[0078] Now LSP8 is established in the network through distributed RSVP-TE signaling (its establishment priority level is 3, and its CIR is 30M). After routing calculation, LSP8 needs to go through Link1. When reaching the aggregated link endpoint, refer to figure 2 As shown, the flow chart of the steps to implement the link aggregation control technology function during t...

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PUM

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Abstract

The invention discloses a method and device for scheduling aggregation links in a packet-switching network. LSPs currently waiting to preempt resources judge one by one whether each member link meets the preemption condition, and select from one or more member links that meet the preemption condition. Select the LSP group with the smallest preemption cost as the preempted LSP group. By adopting the present invention, the preemption cost during scheduling can be minimized, and resources can be rescheduled for preempted LSPs, thereby effectively realizing high efficiency and reliability of link aggregation and ensuring the quality requirements of each LSP.

Description

technical field [0001] The invention relates to the technical field of packet switching networks, in particular to a scheduling method and device for aggregation links in a packet switching network. Background technique [0002] With the growth of data traffic and the improvement of service quality requirements, high bandwidth provision has increasingly become the most important feature of packet switching networks. Link aggregation is an important technology to meet the high bandwidth requirements of the network. [0003] Link aggregation technology (described in IEEE 802.3ad) is to combine several physical links between two devices into a logical link (also called an aggregated link), which is logically As a whole, the internal composition and details of the transmitted data are transparent to the upper layer services. [0004] In the prior art, in order to allocate resources to newly built or failed LSPs (Label Switched Paths) when they recover, the resources are preemp...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/891H04L12/865H04L47/41H04L47/6275
Inventor 陈谭坤
Owner ZTE CORP