Cisco Nexus ASR ASA Packet Capture Steps

 Good idea of the capabilities of Cisco switches/routers in terms of various   troubleshooting tools, especially packet capture tools.  Ability to choose the right tool to troubleshoot, which helps for timely resolution of the problem. 

Importance
The most important function of packet capture is network detection. The process of packet capture is similar in essence to telephone wiretapping, as it detects everything going through the computer networks. The main function of it is to monitor network performance and troubleshoot any problems which may arise. Sniffers can also capture data from diverse parts of the network using a monitoring port. This type of interface intercepts data from different points and sends them to the network administrator, to be decoded and analysed.

Topics Covered : 

Flexible NetFlow (FnF)

Embedded Packet Capture Tools 

SPAN / RSPAN / ERSPAN 

Ethanalyzer and NetDR 

VACL and ACL Capture 

ELAM 

Putting It All Together

Summary and Take Away