Expired NetFlow records are bundled into NetFlow export packets and sent to the NetFlow collector using the UDP protocol. Configuring the IP address of the NetFlow collector destination determines where expired NetFlow records for this system are sent. Up to four NetFlow collectors may be configured for each system. Multiple systems may share one or more NetFlow collectors. You can optionally specify the UDP port to be used on the NetFlow collector. By default, no NetFlow collector is configured on a system.
If you attempt to enter five collector destinations the following error displays:
Set failed. If previously configured, you must “clear netflow export-destination” first.
This message indicates that you have configured the maximum number of export destinations for the device. Remove a configured export destination using the clear netflow export-destination ip-address command before adding an additional export destination.
Use the set netflow export-destination command to configure the IP address of a NetFlow collector for this system and optionally set the UDP port.
Use the clear netflow export-destination command to clear the specified NetFlow collector configuration.