The design of multi-network card communication provided with a dual-redundance network card based on the TCP/IP protocol & VxWorks
Feng Dan-qiong · Industrial Instrumentation & Automation · 2006
By meanssof a standard socket and and the multi-task method of VxWorks,the multi-network card communication based on the TCP/IP protocol is realized.The method of adding and deleting a network card dynamically in a program can bring about a dual-redundance net,which uses the same IP and physical address.The paper gives an example,in which both 82559 and NE2000 are used to realize the multi-net communication and the dual-redundance backup of the dual NE2000 network card.The said method is of highly practical value,which avoids the second development of a board packet,thus reducing the developing period and cost.