With netflow configuration on Cisco devices and Solarwinds netflow analyzer you can inspect and sniff a router traffic and analyze it on your PC.
Solarwinds netflow analyzer provides basic information and details about the traffic and protocols. If you need details information and enterprise reports you need to go with one of the paid versions of the Netflow analyzer like Manageengine bandwidth monitor or nmetric.
Below are the steps you need to follow to set this up:
Download and Install “Solarwinds Real-time Netflow Analyzer” on the 192.168.239.100 PC.
Confgure the router with the below configuration:
1- Configure the interface that you are going to monitor
interface FastEthernet0
ip address 192.168.1.100 255.255.255.0
ip nbar protocol-discovery # This is required for solarwinds netflow analyzer but might not be required for others
ip flow ingress
ip flow egress
2- This interface will be connected to the netflow PC(directly or via a switch)
interface FastEthernet1
ip address 192.168.239.100 255.255.255.0
3- You will need snmp server to be running
snmp-server community public RO
4- Set up netflow server
ip flow-export version 5
ip flow-export destination 192.168.239.1 2055
Now start Solariwinds netflow analyzer and add the router, select the interface and start the monitoring.
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