Research And Design Of NMP And Agent Based On Linux Embedded System

A bi-directional cable network will bring cable operators lots of new available services, such as Internet surfing, VIP, Video on Demand (VOD), Interactive TV, etc. Currently, DWDM, wire-speed core routers and metro IP networks are available in lots of cities. But the last mile of cable network is still un-directional, which makes the massive bandwidth of cable unable to be used efficiently.Actually, HFC network is a broadband (above 1GHz bandwidth) media to the end user. Upgrading the cable network to support bi-directional IP service will make the cable to be the best access platform in all kinds of access network. Although all of these advantages that HFC possesses over the telephone line, they have not been able to realize effectively as a result of some practical elements, such as restrictions on technique, high cost on remolding, and the low speed and stability of the connected cable network on transmission. ALC, which studied in this disquisition, can make these above-mentioned problems solved thoroughly.In a huge network system, network device is usually composed of many independent and controllable modules, In order to satisfy specific application, these modules need to be flexible extended. To network management, higher request is brought forward to extensibility of network device, especially to agent, because these controllable modules may contain their specifically standard or privately owned MIB (Management Information Base).According to specific standard of the AIC embedded system, by analyzing private protocol and SNMP agent, using net-snmp kit, the author realized an AIC Connection Device agent that based on SNMPv2c. The agent runs well by transplanting to embedded system arm-Linux on Intel IXP425 successfully and providing basal network management functions.