The WS-X5380 Network Analysis Module provides RMON and RMON2 support for Ethernet VLANs to monitor applications and analyze traffic, which extends the RMON support provided by the supervisor engine module. The module acts as a network data-gathering agent and provides network traffic monitoring when used with a client equipped with network monitoring software.The Network Analysis Module contains specialized agent software that is designed to gather a wide variety of statistical information about network operation. It is managed and controlled from an SNMP management application. The module gathers this information by examining every packet that is passed to it. In addition to gathering statistics, the agent supports the filters and packet capture RMON-MIB groups so that individual packets or sequences of packets can be examined to identify and isolate network operational problems.