NETW 420
February 15, 2014
Professor Viviane Ruiz
SNMP stands for Simple Network Management Protocol. SNMP is one example of a management protocol. This is an application layer protocol that helps in administrating and supervising network assets across the web. The SNMP has three key components. They are the managed devices, the agents and the network management system. Show below is the relationship between the managed devices, agents, and NMSs components (Simple Network Management Protocol, 2012).
Managed devices are network nodes that contain the SNMP agent and are connected to the network that is managed. They will gather and store information then they make the information available to the Network Management System by using SNMP. These devices are routers, servers, switches, computers, printers and many other devices. The agent is a network management software module that is installed on a managed device. The agent is knowledgeable of the management information and can make it compatible to the SNMP. The Network Management System implements the applications that will conduct the monitoring and controlling of the managed devices. There is usually more than one NMS on a managed network (Simple Network Management Protocol, 2012).
SNMP uses four basic commands while it monitors and controls a managed device. These four commands are read, write, trap, and the traversal operations. The Network Management System uses the read command to monitor the managed devices. It will study the different variables that are retained by the managed device. It uses the write command to control the device. The NMS can change the values of the variable by using this write command. Alternatively the managed device will send a trap message to the NMS to report certain events that happen on or to the managed device. The Network Management System will use the traversal operations to figure out which variables the managed
References: Clemm, A. (2007). Network Management Fundamentals. Boston, MA: Cisco Press. Simple Network Management Protocol. (2012, Oct 16). Cisco: http://docwiki.cisco.com/wiki/Simple_Network_Management_Protocol SNMP Command Examples. (2010). Oracle: http://docs.oracle.com/cd/E19201-01/820-6413-13/SNMP_commands_reference_appendix.html What Is SNMP? (2003, 03 28). Microsoft: http://technet.microsoft.com/en-us/library/cc776379(v=ws.10).aspx