| With the development of network technology, network device usuallyis composedof many independent and controllable modules. In order to satisfy specific application,these modules need to be flexible extended. To network management, higher request isbrought forward to extensibility of network device, especially to agent, because thesecontrollable modules may contain their specifically standard or privately owned MIB.However, as the industry standard of network management protocol in practice, SNMPdoes not offer a solution of unified Agent management including numerous. Now,SNMP (Simple Network Management Protocol) is being used broadly, and is theindustry standard of the network management. It has three versions: SNMPv1,SNMPv2c, SNMPv3, most equipment is fitted with v1&v2c version agent. Becausethere is no standard node for Wireless Network Connection Device mentioned in thispaper defined in MIB, we must extend the current MIB tree if we want to manage thisfacilityandothersthatconnectitbySNMP.As there are great difference among different operation systems adopted bydifferent devices, agent program should be able to be transplanted very convenientlyand have no exclusive systematic mark. At present, there are several commercialdevelop kits for developing SNMP agent. For example, VxWorks OS provide a goodMIB compiler. Users do just only invoke interface functions to maintain MIB libraryand realize privately owned MIB agent. Its whole design philosophy is very good andthe modularization degree is high. It's convenient for users carrying secondarydevelopment, but its price is high. The development of network management on LinuxOS that open source to all people is different from on VxWorks OS. By analyzingSNMP agent, using net-snmp kit, the author realized a Wireless Network ConnectionDevice agent that based on SNMPv2c. The agent be transplanted to embed systemppc-linux on Motorola PowerPC8250 successfully, could provide basal networkmanagementfunctionsandrunswell. |
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