How do I enable NetFlow on Cisco 4500?

By Trendy

How do I enable NetFlow on Cisco 4500?

Enable NetFlow on Cisco Catalyst 4500 Series

  1. Configure your switch for IP routing.
  2. Log in to the switch, and then enter global configuration mode.
  3. Enter ip flow ingress infer-fields to enable NetFlow for IP routing with inferred input/output interfaces and source/destination border gateway protocol (BGP) as information.

What is NetFlow configuration?

A NetFlow configuration for a Cisco IOS device contains three parts: a monitor, an exporter, and the record itself. Your exporter obviously needs a destination IP address (which would be the IP of your collector), the interface you would like to use as the source IP, and the port you want the NetFlow to be sent on.

How do I enable NetFlow on a Cisco 6500 switch?

Log in to the device, and enter global configuration mode. Type interface {vlan vlan_ID} | {type slot/port} | {port-channel port_channel_number} to select a Layer 3 interface to configure. Type ip flow ingress to enable NetFlow. Type exit to exit interface configuration mode and return to global configuration mode.

What port is NetFlow?

NetFlow Listener port: 9996, UDP, to receive NetFlow exports from routers.

How do I verify NetFlow?

  1. Go to Device > Server Profiles > Netflow > click to Edit >> verify it has a Name, correct IP Address, and correct Port (usually 2055)
  2. Go to Network >> Interfaces >> select the Interface over which traffic is flowing >> verify it has the correct Netflow Profile selected in the drop-down.

How do I test my IP Flow Monitor?

Applying the flow to an interface in IOS-XE:

  1. Enter the interface config mode: interface type mod/num.
  2. Associate an IPv4 or IPv6 flow monitor for input or output packets: ip flow monitor name {input | output}
  3. Verify: show flow interface.

Is NetFlow TCP or UDP?

NetFlow records are traditionally exported using User Datagram Protocol (UDP) and collected using a NetFlow collector. The IP address of the NetFlow collector and the destination UDP port must be configured on the sending router. A common value is UDP port 2055, but other values like 9555 or 9995, 9025, 9026 etc.

What layer is NetFlow?

The Flexible NetFlow – Layer 2 Fields feature enables collecting statistics for Layer 2 fields such as MAC addresses and virtual LAN (VLAN) IDs from traffic. Perform this task to configure a customized flow record. Customized flow records are used to analyze traffic data for a specific purpose.

Can Wireshark capture NetFlow?

Wireshark must be installed on the same server as NetFlow Traffic Analyzer and on any additional polling engines that are being used to collect flow data. Once Wireshark is installed, you are ready to troubleshoot your flow data.