Network Monitoring and Data Center Operation - SOI-Asia

UDP/TCP polling Effective in monitoring service ports of server• Using client for service DNS - nslookup• Using telnet WWW,SMTP,POP• Using tool Radius - radpingbash-2.05$ telnet ns.jp.apan.net 80Trying 203.181.248.3...Connected to ns.jp.apan.net.Escape character is '^]'.get501 Method Not Implemented:Telnet with service portreplySNMP - Framework - SNMP: Simple Network Management Protocol Polling: UDP 161, Trap : UDP 162 Protocol for monitoring/managing equipment vianetwork Enables us to monitor the state and traffic of variousequipment without being dependent on vender Management is realized by UDP between…• monitoring/managing server : Manager e.g. HP Open View, Sun NNM• network equipment : Agent resides in device e.g. Most general technique for acquiring detailedinformation from a router or a switch8