Communication system and method between serial boards

A technology of a communication system and a communication method, which is applied in the field of serial inter-board communication systems, can solve the problems of increasing the number of backplane layers and occupying backplane connector pins, etc., and achieve the effect of improving safety and realizing low cost
CN1909493AInactive Publication Date: 2007-02-07HUAWEI TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
HUAWEI TECH CO LTD
Publication Date
2007-02-07
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a serial inter-board communication system, which comprises: a main controller and a service unit, wherein said main controller comprises at least one independent band-external manage channel MHW; each MHW is connected to at least one service unit. The invention also provides a serial inter-board communication method. The invention uses independent MHW with several service units, to support mixed transmission hardware state and manage report, with less signal needed by back board; and the cost of each module is lower, the transmission speed can meet band-external manage demand, and it separates the band-internal and band-external managements to improve the safety of system.
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Description

technical field

[0001] The invention relates to the communication field, in particular to a serial inter-board communication system and method. Background technique

[0002] The communication between boards in the device frame can be divided into two modes: in-band communication and out-of-band communication. In-band communication needs to multiplex channels with service flows, which makes the CPU of the main control unit / service unit vulnerable to attacks, including Attacks on the ADSL side and the network side will cause serious problems such as in-band communication interruption, single board reset, and CPU crash of the main control unit. When the business traffic is large, congestion and packet loss often occur, and the extraction of out-of-band communication packets requires more complicated scheduling and priority processing.

[0003] Serial ports and FE channels are commonly used for out-of-band communication. Please refer to figure 1 As shown, the rate of the out-...

Claims

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