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A keep-alive detection method and device for a point-to-point protocol session

A point-to-point protocol and detection method technology, applied in digital transmission systems, electrical components, transmission systems, etc., can solve the problems of LCPEcho packet discarding, error release of related resources, PPP server error PPP client, etc., to improve stability, The effect of reducing protocol flow

Active Publication Date: 2018-04-20
NEW H3C TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, a large-scale PPP client will periodically form a large LCP Echo protocol flow, which will cause delays in the processing of LCPEcho packets in the PPP server
Moreover, LCPEcho packets may be discarded due to network congestion and other reasons.
Regardless of whether the LCP Echo message is discarded or the LCP Echo message is delayed, the PPP server will wrongly determine that the PPP client has gone offline abnormally, and release related resources by mistake, thus affecting the stability of the PPP service.

Method used

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  • A keep-alive detection method and device for a point-to-point protocol session
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  • A keep-alive detection method and device for a point-to-point protocol session

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Embodiment Construction

[0034] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0035] In the embodiment of the present invention, a PPP session keep-alive mechanism is proposed. Determines whether to perform LCP Echo detection for the PPP client based on the session load rate of the PPP server. Moreover, the PPP server controls the timing of LCP Echo detection by analyzing the traffic change of the PPP client, and detects the link status of some PPP clients whose traffic does not change in a targeted manner, thereby reducing the LCP Echo protocol flow and improving the stability of the PPP service.

[0036] figure 1 It is a flowchart of a method for keeping alive detection of a PPP session according to an embodiment of the present invention, and the method is applied to a PPP server.

[0037] Such as figure 1 As shown, the method includes...

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Abstract

The invention proposes a method and device for keeping alive detection of a point-to-point protocol (PPP) session. The method is applied to a PPP server, and the method includes: detecting the session load rate of the PPP server; when the session load rate exceeds a preset threshold value, not executing a chain link for each PPP client within a predetermined time. Road Control Protocol (LCP) Echo detection, and respectively detect the flow of each PPP client within the predetermined time; for the PPP client with no change in the flow within the predetermined time, perform LCP Echo detection; and / or, for The PPP client whose traffic changes within the predetermined time period does not continue to perform LCP Echo detection.

Description

technical field [0001] The invention relates to the technical field of point-to-point protocol (Point-to-Point Protocol, PPP), in particular to a method and device for keeping alive detection of a PPP session. Background technique [0002] PPP is a point-to-point link layer protocol. PPP mainly establishes point-to-point connections through dial-up or leased lines, can provide full-duplex operation, and transmit data packets in order. PPP has now become a solution for simple connections between various hosts, bridges and routers. [0003] After the PPP session is established between the PPP client and the PPP server, the PPP server uses a periodic link control protocol (Link Control Protocol, LCP) session keep-alive mechanism to detect the PPP client. By default, the PPP server sends LCP Echo request packets every 20s, and waits for the LCP Echo response packets from the PPP client. If the PPP server does not receive an LCP Echo response packet for three consecutive perio...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/26H04L29/06
Inventor 赵裕繁张宗盛
Owner NEW H3C TECH CO LTD