((1) Background knowledge Before developing Agent software, you need to be familiar with the following: (1) SNMP protocol, MIB, ASN.1 SNMP subset, BER encoding rules; (2) UDP protocol, connectionless Socket programming ;(3)??ATMUNI, AAL5;(4)??VxWorks multitasking mechanism and message queue mechanism, and their programming;(5)??The use and extension of WRSWindNet software package;(6)??Tornado Series development and debugging tools. For the above content, please refer to the following materials: (1) ?? SNMP, MIB: RFC1155, RFC1157, RFC1122, RFC1213; (2) ?? ASN.1, BER: X.680, X.690; (3) ?? related ATM's book, ATMForumILMI4.0; (4)?? VxWorksProgrammer's Guide: Chapter2: BasicOSChapter5: Network (5)?? WindNetSNMPv1/v2c full book (6)?? TornadoUser'sGuide full book (7)?? GNUToolKit: TheGNUBinaryUtilities : ar, ld, nmGNUMake(8)?? If you encounter problems such as function calls in programming, you can refer to VxWorks5.3.1ReferenceManual(9)?? The introduction of related message queues can also refer to the technical documentation of Cui Jian.)