Frame relaying packet transmission method and device

A technology for frame relay message and message transmission, which is applied in transmission systems, digital transmission systems, electrical components, etc., and can solve the problems of frame relay message discarding, outbound port congestion, and interruption of important services.

Inactive Publication Date: 2008-03-19
NEW H3C TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Traffic shaping is configured on the port of the frame relay switching router that communicates with frame relay network 1. Currently, there is traffic in the direction from router B to router A, and the traffic is greater than the traffic shaping configured on the frame relay switching router. send rate, causing congestion on the port of the FR switch router communicating with Frame Relay Network 1
At this time, if router A has sent a frame relay InARP request packet to router B, router B returns a frame relay InARP reply packet, when the frame relay InARP reply packet arrives at the frame relay switch router During switching, the frame relay InARP response message is discarded due to the congestion of the outbound port of the frame relay switch router.
[0005] To sum up, in the existing frame relay switching technology, when congestion occurs, frame relay packets of some important services will also be discarded, resulting in the interruption of some important services

Method used

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  • Frame relaying packet transmission method and device
  • Frame relaying packet transmission method and device

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Embodiment Construction

[0022] Fig. 2 is a flowchart of a frame relay message transmission method according to an embodiment of the present invention. As shown in Figure 1, the following steps are included:

[0023] In step 201, the frame relay message sending device sends the frame relay message after setting the quality of service guarantee flag in the frame relay message of the specified service.

[0024] In this step, the frame relay packets of the specified services may be specified according to specific requirements, for example, frame relay packets of some services with important applications are specified.

[0025] Step 202, when congestion occurs, if the frame relay switching device parses out the quality of service guarantee identifier from the received frame relay message, then execute the process of sending the frame relay message.

[0026] In this step, an emergency message queue may be preset in the frame relay switching device. After analyzing the quality of service guarantee identif...

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Abstract

The invention discloses a frame relay message transmission method, which includes: frame relay message delivery equipment sets up a service quality guarantee mark in the frame relay message of a designated business and sends out the frame delay message; if frame relay switch equipment resolves the service quality guarantee mark in the received frame relay message in congestion, execute the processing of the frame relay message delivery. The invention also discloses the frame relay message delivery equipment and the frame relay switch equipment. The technical proposal of the invention can prevent the designated frame relay message from being discarded in congestion.

Description

technical field [0001] The invention relates to the technical field of frame relay, in particular to a frame relay message transmission method, a frame relay message sending device and a frame relay switching device. Background technique [0002] Frame Relay (Frame Relay) technology is mainly used to transmit data services, and it uses variable-length frames to transmit data. Frame relay switching is a type of layer-2 switching. When a port of a switching router in a frame relay network receives a packet, the switching router finds the outbound interface and outbound permanent virtual circuit (PVC, Permanent Virtual Circuit), and then send the message. Compared with the common IP forwarding method, this switching method is more efficient. Each switching only needs to analyze the Frame Relay packet header and re-paste the packet header before sending it out. [0003] However, in the existing frame relay switching process, the switching device only parses the content in the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/56H04L47/31H04L47/6275
Inventor 黄敦
Owner NEW H3C TECH CO LTD
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