Enterprise Network Monitoring and Analysis
Enterprise network monitoring and analysis exist in a fast changing environment. This chapter discusses the role that network monitoring and analysis takes in administrating networks. It begins by explaining network monitoring and where it fits into the IT management arena before showing the range of functionality that network monitoring brings to the IT manager's arsenal. Network monitoring has benefited from several standards. The main standard currently in use for network monitoring is the remote monitoring (RMON) standard, which defines a method of monitoring traffic up to the data link layer (Layer 2) in the Open Systems Interconnection stack. There are several proposed standards: Simple network management protocol, RMON standard, and Remote monitoring version 2 (RMON2) standard. Network managers must be able to examine traffic patterns by source, destination, conversations, protocol and application type, and segment statistics such as utilization and error rates.