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Method, system and device for establishing and switching SD-WAN tunnel and storage medium

A technology of SD-WAN and tunnel, which is applied in the field of data communication, can solve problems such as tunnel switching failure, failure to establish tunnel, link oscillation, etc., and achieve the effect of improving user experience

Active Publication Date: 2021-10-22
CHINA TELECOM CORP LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, when the CPE cannot establish a tunnel or detects that the quality of a certain tunnel has deteriorated to a threshold, even if the physical access mode is switched automatically, if the corresponding IP network is congested at this time or a large number of tunnels are transferred to the originally relatively idle If the underlay network routes are switched at the same time, the tunnel will fail to switch, which will cause the tunnel to switch back and forth between the active and standby access modes continuously, resulting in link oscillation

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  • Method, system and device for establishing and switching SD-WAN tunnel and storage medium
  • Method, system and device for establishing and switching SD-WAN tunnel and storage medium
  • Method, system and device for establishing and switching SD-WAN tunnel and storage medium

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Embodiment Construction

[0101] Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the example embodiments to those skilled in the art. The same reference numerals denote the same or similar structures in the drawings, and thus their repeated descriptions will be omitted.

[0102] Figure 4 It is a flowchart of an embodiment of the method for establishing and switching SD-WAN tunnels in the present invention. Embodiments of the present invention provide a method for establishing and switching SD-WAN tunnels, including the following steps:

[0103] Step S110: Receive the first tunnel establishment / handover application information sent by the client front-end equipment on the active access li...

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Abstract

The invention provides a method, system and device for establishing and switching an SD-WAN tunnel and a storage medium, and the method comprises the steps: receiving first tunnel establishing / switching application information sent by a client front-end device on a main access link, the first tunnel establishing / switching application information comprising a tunnel identifier and an application timestamp; obtaining tunnel information according to the tunnel identifier; sending second tunnel establishing / switching application information to an IP-SDN controller corresponding to the main access link, the second tunnel establishing / switching application information comprising tunnel information and an application timestamp, so that the IP-SDN controller selects an available routing table meeting the tunnel bandwidth and determines an available tunnel; and sending the available routing table of the available tunnel to the client front-end device, so that the client front-end device executes tunnel establishing / switching according to the available routing table of the available tunnel. According to the invention, tunnel link oscillation between the main access link and a standby access link caused by instant exhaustion of IP network resources due to simultaneous establishing / switching of a large number of tunnels in the SD-WAN network can be relieved.

Description

technical field [0001] The present invention relates to the technical field of data communication, in particular, to a method, system, device and storage medium for establishing and switching SD-WAN tunnels. Background technique [0002] At present, the establishment and switching of SD-WAN (wide-area software-defined network) tunnels involves static configuration or dynamic routing of the underlying underlying IP network routing, and all tunnels have the same right to select IP routing. On the other hand, SD-WANCPE (Customer Premise Equipment) generally passes through a variety of different access networks (such as PON (Passive Optical Network: passive optical network) access network, IPRAN (wireless access network IP ), etc.) to access the SD-WAN network, and the two access methods are set to the active / standby switching mode. [0003] Combine below Figure 1 to Figure 3 The background art will be described. figure 1 and figure 2 In , the thin solid line indicates tha...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/46H04L29/08
CPCH04L12/4633H04L67/141H04L67/143
Inventor 张届新张宏丙陈乐贤周其刚徐海峰
Owner CHINA TELECOM CORP LTD
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