| 摘要 |
<p>A circuit for controlling the rearrangement between the main board and the standby board includes a promoting to master subscription processing module and a master-standby processing module. The promoting to master subscription processing module receives promoting to master subscription indication signal of opposite board, completes control of promoting to master subscription of oneboard, and outputs indication signal of promoting to master subscription of principal board. The master-standby processing module receives indication signal of promoting to master subscription of principal board, completes master-spare converting control of oneboard, and outputs indication signal of promoting to master subscription of principal board. A method for master-spare converting control adopts subscription mechanism, which causes oneboard to subscribe before promoting to master. This board can promote to master only if subscription of promoting to master is successful. The circuit and method applied present invention can realize master-spare converting control of 1+l standby system, avoid two masters collision problem in existence technology, and improve system reliability.</p> |
