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Method and device for dispatching permanent virtual path

A virtual channel and permanent technology, applied in the field of data communication, can solve the problems of unreachable 622M bandwidth, unreachable, low output port rate, etc., achieve high output port rate, improve QoS, and speed up the effect

Inactive Publication Date: 2009-04-15
NEW H3C TECH CO LTD
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Problems solved by technology

[0011] It can be seen that the scheduling mechanism of sequentially polling all PVCs in the prior art needs to schedule a large number of PVCs, such as 1k PVCs, the output port rate is low, and the maximum can only reach 64.5Mbps, which is still far from reaching At present, the output port of ATM equipment can support 622M bandwidth; if you want to achieve the output port rate of 622M, according to the mechanism of round-robin scheduling PVC in the prior art, you can only schedule 106 PVCs at most, and it is far from reaching the current need to schedule multiple PVCs. PVC, such as the system requirement specification of 1k PVC, therefore, the service quality (QoS, Quality of Service) of ATM network is relatively low

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  • Method and device for dispatching permanent virtual path

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Embodiment Construction

[0026] The invention mainly realizes a round-robin operation for multiple PVCs in a short time by grouping multiple PVCs to be scheduled and then performing hierarchical scheduling, thereby improving the efficiency of PVC scheduling.

[0027] figure 2 It is a flowchart of a method for scheduling PVCs in the present invention. Such as figure 2 shown, including the following steps:

[0028] Step 201, divide all PVCs to be scheduled into N groups, where N is a natural number greater than 1.

[0029] In this step, preferably, the PVCs to be scheduled can be evenly divided into N groups, that is, the number of PVCs in N groups is the same or approximately the same.

[0030] Step 202: In each cell sending cycle, poll N groups of PVCs at the same time, select a PVC from the N groups of PVCs, and then select a PVC from all the selected PVCs as the current PVC that needs to be served. The cell of the PVC currently requiring service is sent out.

[0031] Preferably, in this step,...

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Abstract

The method comprises: dividing the PVCs to be scheduled into N groups (N is natural number and >1); during each cell-transmitting cycle, making the polling for said N groups of PVC in order to select a group of PVCs; selecting one of the selected PVCs as the currently-served PVC; sending out the cell of currently-served PVC.

Description

technical field [0001] The invention relates to the technical field of data communication, in particular to a method and a device for scheduling a permanent virtual channel (PVC, Permanent Virtual Channel). Background technique [0002] According to the traffic management (TM, Traffic Management) standard version 4.1, the asynchronous transfer mode (ATM, Asynchronous Transfer Mode) provides users with asynchronous data transmission services mainly including the following categories: [0003] Constant bit rate (CBR, Constant Bit Rate) service, in which bits are transmitted from one end to the other at a constant rate, there is no error detection, flow control and other operations during the transmission process, mainly used to simulate circuit switching, such as T1 circuit Wait. [0004] Variable bit rate (VBR, Variable Bit Rate) service, this type of service is divided into two subcategories, namely real-time variable bit rate (RT-VBR, Real Time Variable Bit Rate) and non-r...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/46H04L12/56H04L29/06H04L12/861
Inventor 王彬林晖刘强
Owner NEW H3C TECH CO LTD
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