Link status detecting method and system

Abstract

The embodiment of the invention discloses a method for detecting the state of a link, which particularly includes the following steps: a switch element receives the information on the state of the link from the switch element to a subordinate unit and the reachable information from the subordinate unit to a destination unit which are both detected by the subordinate unit; according to the information on the state of the link from the switch element to the subordinate unit and the reachable information from the subordinate unit to the destination unit, the reachable information from the switchelement to the destination unit is obtained. By maintaining an uplink service engine TMI and packet distributing tables of switch elements (SE) in various levels, the embodiment of the invention applies the packet distributing tables to automatically prevent a failed link from distributing data packets, thus solving the problem of blockage of data packets in a certain medium level due to link failure which leads to incapable exchanging the data packets in a multilevel and multi-plane switching network.

Description

technical field

[0001] The invention relates to the technical field of network communication, in particular to a link state detection method and system. Background technique

[0002] With the rapid development of the Internet and the continuous expansion of the network scale, the applications on the Internet are becoming more and more complex, and the network traffic is also increasing very rapidly. Therefore, a switching system with faster speed and larger capacity is required. In order to meet the high-speed and large-scale traffic switching requirements, the switching network, which is the core of the large-capacity switching system, usually provides multiple available links between the source port and the destination port. The system dynamically selects an available link to transmit the data packet to the destination port. The above-mentioned system can be any processing unit, network device, switching device, related network or a combination of these devices; a data pa...

Examples

Embodiment Construction

[0035] The specific implementation of the present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments:

[0036] The embodiment of the present invention maintains the data distribution table of the uplink service engine TMI and / or the data distribution table of the first-level SE through the link detection packet, so that the TMI and the first-level SE can automatically avoid link failures when distributing data packets. The data packet is blocked at a certain level in the middle. Through the link state information reported by the first-level SE step by step according to the last-level SE, the first-level SE can know all the link state information that reaches the last-level SE. In this way, after a link fails, the first The level SE can know in time and select other intermediate SEs for the data packet to forward according to the distribution table, thereby avoiding the technical defect of a certain intermediate SE blo...

technical field

[0001] The invention relates to the technical field of network communication, in particular to a link state detection method and system. Background technique

[0002] With the rapid development of the Internet and the continuous expansion of the network scale, the applications on the Internet are becoming more and more complex, and the network traffic is also increasing very rapidly. Therefore, a switching system with faster speed and larger capacity is required. In order to meet the high-speed and large-scale traffic switching requirements, the switching network, which is the core of the large-capacity switching system, usually provides multiple available links between the source port and the destination port. The system dynamically selects an available link to transmit the data packet to the destination port. The above-mentioned system can be any processing unit, network device, switching device, related network or a combination of these devices; a data pa...

Examples

Embodiment Construction

[0035] The specific implementation of the present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments:

[0036] The embodiment of the present invention maintains the data distribution table of the uplink service engine TMI and / or the data distribution table of the first-level SE through the link detection packet, so that the TMI and the first-level SE can automatically avoid link failures when distributing data packets. The data packet is blocked at a certain level in the middle. Through the link state information reported by the first-level SE step by step according to the last-level SE, the first-level SE can know all the link state information that reaches the last-level SE. In this way, after a link fails, the first The level SE can know in time and select other intermediate SEs for the data packet to forward according to the distribution table, thereby avoiding the technical defect of a certain intermediate SE blo...

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