On a network switch, the port mirroring function sends copies of network packets from one port to another switch or port for analysis. Port mirroring is a safe, effective way to mirror traffic to CA Application Delivery Analysis monitoring devices. Some switches do not provide a diverse range of TCP packet-mirroring capabilities. Where traffic cannot be mirrored optimally, use alternatives such as fiber taps.
Note: The port mirroring function on Cisco switches is named Switched Port Analyzer (SPAN).
Mirror the switch ports, where traffic travels to and from the monitored servers, to the ports where Multi-Port Monitor is connected. When mirror ports are configured correctly, CA Application Delivery Analysis monitors the flow of application among clients and servers without the use of desktop or server agents.
For more information, see the CA Best Practices for Data Acquisition Guide.
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