Hierarchical switched network logical channel self-healing method

A switching network, hierarchical technology, applied in the direction of data switching network, data exchange through path configuration, digital transmission system, etc., can solve the problems of direct use of unfavorable light waves, occupying channel bandwidth, increasing the cost and complexity of SDH facilities, etc.

Inactive Publication Date: 2006-09-06
COMP NETWORK INFORMATION CENT CHINESE ACADEMY OF SCI
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Problems solved by technology

The disadvantage of this approach is that, first, sending Hello packets specially will occupy the channel bandwidth, so they can only be sent regularly and sparsely, resulting in a long time for judging invalidation; The response of the Hello message, it cannot immediately determine that the link or the other node has failed
[0014] The main problem with this self-healing method is that there are strict restrictions on the use of the channel, which is not conducive to ...

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  • Hierarchical switched network logical channel self-healing method
  • Hierarchical switched network logical channel self-healing method
  • Hierarchical switched network logical channel self-healing method

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Embodiment Construction

[0134] The present invention will be further described below in conjunction with the embodiment of accompanying drawing 4 . In Fig. 4, there are three physical channels between node domain A and node domain B, and two physical channels between node domain A and node domain C, host 1 plays the program from video server 1 in real time. Host 2 plays programs from video server 2 in real time. The second method of channel restoration is used in each node domain. When the port is in any state, the maximum time interval for sending packets is 2ms. When it is in the normal state, if there is no data packet or control packet, it will send a filling packet; when it is in a transitional state, it will send a response packet; when it is in a fault state, it will send a query packet. When the port is in the normal state, if it does not receive the information packet within 10ms, it will consider that the channel is faulty. When the port is in the transition state, if it cannot receive th...

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Abstract

The present invention relates to a hierarchy type switched network self-recovery method. Hierarchy type switched network logic channel is composed of multiple physics channels, when some physics channel or switchboard port occurring fault, the communication load distributed to said channel must be switched to other physics channel belonging to same logic channel. The present invention provides a fast zero channel fault detection method, after channel being fault, setting-up systematical fault state, transition state and normal state, using action, event and state conversion to realize channel recovering, at the same time utilizing interactive process in channel recovery process determining channel round-trip delay, being used as channel and port parameter for other protocol or software module to use. Said invention provided fast self-recovery method can overcame channel fault to user real-time communication infection. Said invention provided fault detection method can be used for other occasion possess of 1 1 or N: 1 spare channel spare channel.

Description

technical field [0001] The invention relates to the fields of automatic recovery of network faults, quality assurance of real-time communication and network communication protocols. Background technique [0002] Hierarchical switching network (Chinese patent application 03120998.X, hereinafter referred to as hierarchical network) is a network whose topological structure is structured according to hierarchical structure, and its address space is also allocated according to hierarchical structure, and the hierarchical structure of topology and the hierarchical structure of address structure are strictly matched. It replaces IP Routing with IP Switching by redefining the network topology, the method of network address allocation, and the relationship between the two, avoiding routing operations, and realizing data packets according to hierarchical addresses. It can be exchanged in a timely manner, thereby improving the performance of network nodes and simplifying the complexit...

Claims

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Application Information

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IPC IPC(8): H04L12/24H04L12/28H04L12/56H04L29/06H04L45/247
Inventor 牛广锋钱华林葛敬国娄雪明张道庆王兴杰甄久立
Owner COMP NETWORK INFORMATION CENT CHINESE ACADEMY OF SCI
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