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Master stand-by inkage switching method of cascade one-board

A master-standby switchover and single-board technology, applied to electrical components, transmission systems, etc., can solve problems such as repeated switchover, complex single-board structure, and large difference in communication delay, so as to avoid repeated switchover, ensure real-time performance and Fast, cost-effective system effects

Inactive Publication Date: 2008-01-16
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This not only makes the structure of the board complex, but also because the communication delay of the board status signal through the HDLC line and the delay of the service data through the service channel may be relatively large, it may not be able to guarantee the real-time switching of the receiving end, and it is easy to cause repeated switching

Method used

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  • Master stand-by inkage switching method of cascade one-board
  • Master stand-by inkage switching method of cascade one-board
  • Master stand-by inkage switching method of cascade one-board

Examples

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Embodiment Construction

[0034] In the present invention, a set of switching protocols is customized between cascaded single boards, the business lines and business data between the single boards are transmitted together, the switching protocol is used to control the switching of single boards, and the cascading connection between the central frame and the cascaded frame is realized Active / standby simultaneous switchover of single boards. Once the active / standby boards M1 and M2 in the central frame are switched, each board notifies S1 and S2 of the cascaded frame through the protocol to control the cascaded When switching occurs in frames S1 and S2, S1 and S2 notify M1 and M2 respectively through a protocol, so that the boards in the center frame are switched accordingly.

[0035] The switchover protocol between cascaded boards includes commands such as querying the status of the boards, responding to commands, and instructing switching. Here, 3 bits are used to represent 8 protocol instructions, an...

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PUM

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Abstract

This invention discloses a method for cascade one-board master and standby linked inversion, in which, the instruction controlling inversions between cascade one-boards is transferred between cascade single boards including the following steps: if the central frame master single-board is abnormal, the master / standby of the central frame board are inverted, an order is delivered to the cascade frame single board to control the cascade frame for master / standby inversion. If it's normal, then the master and standby boards deliver enquiry to the cascade board separately, if the cascade frame single board is cascaded with the master board, then the cascade board is invented with the master / standby and delivers instruction to the central board for inversion. If the cascade feedback instruction shows that the master and standby are not the same, thus they deliver orders separately to control the cascade for master / standby conversion.

Description

technical field [0001] The invention relates to the master-standby switching technology, in particular to a method for cascaded single-board master-standby interlocking switchover. Background technique [0002] When multi-chassis interconnection of telecommunication equipment is carried out, in order to improve the reliability of the equipment, two sets of cascaded single boards are used in the central chassis and the cascaded chassis to back up each other. Figure 1 is a schematic diagram of two groups of cascaded boards. As shown in Figure 1, the main board M1 in the center frame is connected to the cascaded board S1 through a service line, and M2 and S2 are connected through another service line to form two The groups are mutually backup cascaded boards. [0003] Under normal circumstances, the main board M1 of the center frame sends service data to the master board S1 of the cascade frame. Switchover occurs due to standby switchover, M2 switches to the active state, and...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B1/74H04L29/06
Inventor 廖健行
Owner HUAWEI TECH CO LTD
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