First you need to determine which interface is causing high traffic. The fastest way to see this, in real time, is to use the command "sh controll util". The ports with no traffic will be "0" and this is expressed in percentage (%).
Next, once you've identified which interface or interfaces, and you want to determine which IP address, you enable IP device tracking using the following commands:
ip device tracking
ip device tracking max 10
Wait for 15 seconds and then issue the command "sh ip device tracking max 10" and it will show you the entire list. If you want to filter down to a specific interface then you can use the command "sh ip device tracking interface ".
I tried above mentioned command but all ports shows "0" traffic. Actually I am using VRF configuration on this core switch. VLAN 300 is the member of VRF. MRTG of service provder shows that there is a traffic on this link. How can identify IP addresses passing on this link. Thanks
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