Method and device for switching network device from stand-by state to main state and network device

Abstract

The invention provides a method and device for switching a network device from a stand-by state to a main state and the network device. The method and device are applied to a network comprising a three-layer network and a two-layer ring network. A first three-layer network device and a second three-layer network device of the three-layer network are connected with a two-layer network device in the two-layer ring network, and a three-layer protection protocol is operated. The first three-layer network device is in the main state, and the second three-layer network device is in the stand-by state. The method comprises the steps that after a TC message is received, the second three-layer network device is switched from the stand-by state to a stand-by-to-main delay state, and if a heartbeat message of the three-layer protection protocol is not received within a first set time period, the second three-layer network device is switched from the stand-by-to-main delay state to the main state. Through the scheme, the second three-layer network in the stand-by state can be prevented from being switched to the main state mistakenly.

Description

technical field [0001] The invention relates to the technical field of communication, in particular to a method and device for switching network equipment from a standby state to a main state, and the network equipment. Background technique [0002] With the development of Internet technology and the popularization of network applications, the number of Internet users is increasing step by step, and the Metropolitan Area Network (MAN) emerges as the times require. MAN generally has a tree or ring structure. The layer network is separated. Such as figure 1 Shown is a schematic diagram of a ring-shaped MAN. Network devices 10 and 11 are egress nodes of the MAN, which are layer-3 network devices. Layer-3 protection protocols are deployed on network devices 10 and 11, such as Virtual Router Redundancy Protocol (Virtual Router Redundancy Protocol, VRRP), Protocol Independent Multicast (PIM), etc.; Layer 2 ring network access network devices 10, 11, Layer 2 ring network is compo...

AI Technical Summary

Problems solved by technology

If the detection time of BFD is set too short, there will be a risk of mistaken switching of network devices in the standby state when a single link fails; if the detection time of BFD is set too long, double-point faults or active When a network device fails, the switching time of the network device in the standby state will be prolonged, which will affect the user experience

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