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Link fault reporting method based on software defined network and forwarding device

A software-defined network and forwarding device technology, applied in the field of communications, can solve the problem of slow reporting of fault information, shorten the reporting time and improve real-time performance

Inactive Publication Date: 2017-03-29
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The main technical problem to be solved by the present invention is to provide a software-defined network-based link fault reporting method and forwarding equipment to solve the existing problem that when a link fails, the time to report the fault information is relatively slow

Method used

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  • Link fault reporting method based on software defined network and forwarding device
  • Link fault reporting method based on software defined network and forwarding device
  • Link fault reporting method based on software defined network and forwarding device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] The link fault reporting method based on the software-defined network of this embodiment, such as figure 1 As shown, the method includes:

[0042] Step S101: Establish a detection link with the peer forwarding device;

[0043] In this step, the forwarding device at the local end establishes a detection link with the forwarding device at the opposite end. The detection link here can be a link established separately, or it can be the original service link between the forwarding device at the local end and the forwarding device at the opposite end. . The forwarding device here refers to the forwarding plane or forwarding layer of the software-defined network, specifically, it may be a switch or a physical node. Wherein, the forwarding device at the local end generally refers to a forwarding device directly connected to the control end, and the forwarding device at the opposite end refers to an adjacent forwarding device connected to the forwarding device at the local end...

Embodiment 2

[0054] The method for reporting link faults based on software-defined networking in this embodiment is described in this example by taking the forwarding device as a switch and the control terminal as a controller. figure 2 As shown, the method includes:

[0055] Step S201: the controller obtains network topology information by sending and receiving LLDP data packets to directly connected switches in the network;

[0056] Step S202: the controller commands each switch to establish a detection link according to the topology link information;

[0057] Step S203: After the detection link between the switches is established, periodically and quickly send the detection message;

[0058] Step S204: If no detection message is received from the peer switch within the detection period, it is considered that the link is faulty, and the controller is notified.

[0059] Among them, link discovery and topology management are the basis of network management. Unlike traditional networks w...

Embodiment 3

[0066] The link fault reporting method based on software-defined network in this embodiment, in this example, the forwarding device is a switch, and the control terminal is a controller as an example. The OF switch in the SDN network is managed by the controller. After sending and receiving packets to generate a network topology link, notify the switch to establish a detection link, specifically as image 3 As shown, the method includes:

[0067] Step S301: the controller encapsulates the device identification and the port identification in the LLDP message, and sends an order to the OF switch through the packet-out message of the OpenFlow protocol, and the command switch sends the LLDP message through its designated port;

[0068] In this step, specifically, the controller encapsulates the switch identifier A and the port identifier i in the LLDPDU packet, sends the packet-out message of the OpenFlow protocol to the OF switch A, and orders the OF switch A to send the LLDP pac...

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Abstract

The invention provides a link fault reporting method based on a software defined network and a forwarding device, applied to the field of communication. The method comprises the following steps: establishing a detection link with an opposite terminal forwarding device; receiving a detection message sent by the opposite terminal forwarding device through the detection link; judging whether the detection link has a fault according to the detection message; and when the detection link is determined to have the fault, reporting the fault to a control terminal. Compared with the prior art, the detection link is established between the home terminal forwarding device and the opposite terminal forwarding device, the link between the home terminal forwarding device and the opposite terminal forwarding device is detected by the detection message, the link can be detected without receiving a link detection packet of the control terminal periodically, thereby avoiding the control terminal releasing the link detection packet in the whole network, and meanwhile improving the instantaneity of link detection, and thus the time of link detection and fault information reporting can be shortened on the premise of not affecting the performance of the controller.

Description

technical field [0001] The present invention relates to the communication field, in particular to a software-defined network-based link fault reporting method and forwarding equipment. Background technique [0002] Software Defined Network (Software Defined Network, SDN) is a new type of data communication network technology. The characteristic of SDN is the separation of control and bearer, which separates the control part of routers and switches in the original network and realizes it by software, while the rest of the forwarding part is realized by network equipment. The former is called the control plane / layer, that is, the control end, and the latter is called the forwarding plane or layer, that is, the forwarding device. [0003] The devices on the forwarding plane, that is, forwarding devices, focus on high-speed forwarding of data packets, and the forwarding decision is uniformly distributed by the control end of the control plane through the southbound interface pr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/24H04L12/26
CPCH04L43/00H04L41/06H04L43/06H04L43/08
Inventor 郭文君王大勇
Owner ZTE CORP
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