Distributed data communication equipment has been widely used in the operator’s networking environment.The protocol stack software which is running on the equipment may run into a wrong branch

resulting in an error.Currently

when protocol stack meet a link error

it can not be quickly and effectively locate the problem without affecting other business.In this paper

this issue is analyzed and investigated

and a method of quickly querying the internal module data of the serial communication device is proposed.Based on the Linux operating system

C programming language and Python script

this method can use the command to directly view all the data in the specified data structure

which can avoid the service interruption problem caused by the traditional query protocol stack based on the breakpoint or the single step debugging method.It is shown that the work efficiency

precision and the quality of work are high

which may have the potential for further promotion.