A method for fault detection of distributed protection link
A technology for fault detection and link protection, applied in digital transmission systems, electrical components, transmission systems, etc., it can solve the problems of occupying the CPU resources of the main control board and affecting the stability of the system, and achieve the effect of reducing the occupation.
Active Publication Date: 2018-03-27
湖州丰源农业装备制造有限公司
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Problems solved by technology
If the main control board of the enterprise-level switch completes these processes, it will occupy too many CPU resources of the main control board and affect the stability of the system.
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[0013] In order to enable those skilled in the art to better understand the technical solutions of the present invention, the technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings and embodiments. Obviously, the described embodiments are only Some embodiments of the present invention, but not all embodiments.
[0014] The present invention provides a distributed protection link failure detection method. The MEP failure detection state machine is deployed on the switch line card, which disperses the data processed by the CPU of the main control board to the CPU on the line card. , Which greatly reduces the CPU resources of the main control board, and brings stability to the operation of the switch system.
[0015] The method for detecting the distributed protection link failure of the present invention includes the following steps:
[0016] Step 1: Configure the fault detection state machin...
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The present invention proposes a method for fault detection of distributed protection links, comprising: configuring a fault detection state machine of MEP on the main control board of the switch and the line card to be detected, and configuring the fault detection state machine on the two ports of the line card of the switch Configure the MEP to implement two protection links, the two ports are the active port and the standby port; start a fault detection state machine for detection, and the other fault detection state machines are in the stop state; when the fault detection state machine that is started detects When the fault state changes, the fault detection state machines of other MEPs are synchronously updated to the new fault state. The method for fault detection of the distributed protection link of the present invention disperses data processing to the line cards of the switch, which will greatly reduce the CPU resources occupied by the main control board of the switch; and, the present invention provides the protection link to detect the fault of the forwarding path, When one of the physical links fails, data packets can be forwarded through another link.
Description
Technical field [0001] The invention relates to a method for link detection of network equipment, in particular to a method for link detection of an enterprise-level switch. Background technique [0002] The IEEE802.1ag protocol is mainly used to detect and manage the fault detection and management of the Layer 2 forwarding path of network equipment, and its principle is briefly described as follows. [0003] Configure MEP (Maintenance association EndPoint) at both ends of the Layer 2 forwarding path that needs to be detected. After that, the MEP at one end periodically sends CCM packets to the MEP at the opposite end, and at the same time, it detects CCM packets sent from the opposite end. If the CCM sent by the peer is not received within 3.5 times the sending period, the link is considered to be faulty and the link fault needs to be notified. [0004] The transmission cycles of CCM messages specified by the IEEE802.1ag protocol are: 3.3ms, 10ms, 100ms, 1s, 10s, 1min, and 10min. ...
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IPC IPC(8): H04L12/24H04L12/939H04L12/935H04L49/111
Inventor 李智荣刘驰
Owner 湖州丰源农业装备制造有限公司