NETW-420-62199 Enterprise Network Mgmt w/Lab

Network management is the top-level administration and maintenance of large networks, often in areas such as computers or telecommunications, but not including user terminal equipment. It often involves functions such as security, monitoring, control, allocation, deployment, coordination, and planning. A large number of protocols, including SNMP, CMIP, common information model and Java Management Extensions, govern this field and exist for its support.
Remote Monitoring (RMON) is a standard monitoring specification that enables various network monitors and console systems to exchange network-monitoring data. RMON provides network administrators with more freedom in selecting network-monitoring probes and consoles with features that meet their particular networking needs. Remote Monitoring has been helpful bringing company closer and closer all over the world, this standard is just not for a LAN network. Many company have their employees work from home and can monitor their system from any location that have a Wi-Fi service. RMON has the capabilities to delegate management functionality, by using SNMP. There are several entities that make up a network management system: managers, agents, MIBs, RMON, probes, MOs, and real devices.

An RMON probe can sometimes be management appliance software or could be in the device that is managed. They can also reside near monitored network elements. The probe analyzes RMON information such as traffic and alarms. RMON probes delegate certain tasks such as collecting statistics, periodic polling, subscribing to certain notifications, and generating threshold-crossing alerts through specific configuration of MIBs. Some advantages of utilizing RMON probes is that they reduce SNMP traffic as well as reduces the processing load of the clients. They also use periodic polling instead of continual polling which also reduces processes.

The initial goal of RMON was to monitor network traffic in a local-area network (LAN) environment and to provide comprehensive information for network fault diagnosis, planning, and performance tuning to network administrators. RMON implements a passive collection approach that measures specific aspects of the traffic without interfering by adding monitoring traffic. RMON can be implemented in network elements, such as Cisco routers and switches, or it can be deployed using dedicated RMON probes. The network management application uses SNMP or other network management protocols to retrieve the data that the management agents collect. The retrieved data is typically processed and prepared for display with a GUI, which allows the operator to use a graphical representation of the network to control managed devices and program the network management application.
The network management architecture consists of the following:
Network management system (NMS): A system that executes applications that monitor and control managed devices. NMSs provide the bulk of the processing and memory resources that are required for network management.
Network management protocol: A protocol that facilitates the exchange of management information between the NMS and managed devices, including SNMP, MIB, and RMON.
Managed devices: A device (such as a router) managed by an NMS.
Management agents: Software, on managed devices, that collects and stores management information, including SNMP agents and RMON agents.
Management information: Data that is of interest to a device's management, usually stored in MIBs.

REFERENCES
Cisco Ebook: Chapter 3 - Structuring and Modularizing the Network (Part03). (n.d.). Retrieved from http://ciscodocuments.blogspot.com/2011/06/chapter-3-structuring-and-modularizing_16.html
Essential Snmp. (n.d.). Retrieved from http://www.slideshare.net/guest9831c0e/essential-snmp
Read 1587052725.pdf. (n.d.). Retrieved from http://www.readbag.com/ablongman-samplechapter-1587052725