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How do I configure a flow monitor on a Cisco router?

by Clay Mcdonald

How do I configure a flow monitor on a Cisco router?

Configuring a Customized Flow Record

  1. enable.
  2. configure terminal.
  3. flow record record-name.
  4. description description.
  5. match {ipv4 | ipv6}{destination | source} address.
  6. Repeat Step 5 as required to configure additional key fields for the record.
  7. collect interface {input | output}

How do you configure NetFlow?

Configuring NetFlow and NetFlow Data Export Using the Version 9 Export Format

  1. enable.
  2. configure terminal.
  3. ip flow-export destination {ip-address | hostname} udp-port.
  4. Repeat Step 3 once to configure a second NetFlow export destination.
  5. ip flow-export version 9.
  6. interface interface-type interface-number.

How do I enable NetFlow in OpManager?

Enabling NetFlow Analyzer Add-on in OpManager

  1. Step 1: Go to Settings → Basic Settings → System Settings.
  2. Step 2: Under Displayed Modules in the General tab, select Flow Analysis (NetFlow).
  3. Step 3: Save the settings.
  4. Step 1: Navigate to Settings → NetFlow → Discovery → Export Flow.

How do I enable cache flow on Cisco router?

To enable NetFlow switching for IP routing, use the ip route-cache flow interface configuration command. To disable NetFlow switching, use the no form of this command.

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.

How do I configure ip flow monitor?

  1. Step 1: Configure the Records. NetFlow uses key and nonkey values called a record.
  2. Step 2: Configure the Flow Exporter. The flow exporter exports the NetFlow data to a NetFlow collector.
  3. Step 3: Configure the Flow Monitor.
  4. Step 4: Create a Sampler.
  5. Step 5: Apply NetFlow to Interfaces.
  6. Step 6: Verification.

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 add a router to NetFlow Analyzer?

How to add a device in NetFlow Analyzer?

  1. Navigate to Settings > Discovery > Export Flow.
  2. Enter the device Hostname / IP Address.
  3. Select respective SNMP credential or Add new SNMP credential (if credential does not exist)
  4. Provide the below information to communicate to the device in sequence.

How do I configure Manageengine NetFlow Analyzer?

Linux:

  1. Download NetFlow Analyzer for Linux.
  2. Assign execute permission using the command: chmod a+x ManageEngine_NetFlowAnalyzer_xxxx.
  3. Execute the following command: sudo ./ManageEngine_NetFlowAnalyzer_xxxx.
  4. Follow the instructions as they appear on the screen to successfully install NetFlow Analyzer on to your machine.

What is ip cache flow?

The show ip cache flow command displays the NetFlow accounting statistics. Use the clear ip flow stats command to clear the NetFlow accounting statistics.

How do I test my IP Flow monitor?

What is ip cache flow command?

How to enable NetFlow on a Cisco router?

If your router is running Cisco IOS release 12.2(14)S, 12.0(22)S, 12.2(15)T, or later the ip flow ingress command is used to enable NetFlow on an interface. Validate configuration: show ip cache flow show ip flow export show ip flow interface show ip flow export template Reference:

How to start the opmanager service for NetFlow?

Start the OpManager Service. To start monitoring NetFlow, follow the steps below: Start exporting flow packets from the device to OpManager server in port 9996 (Default listening port, configurable) Need some more clarification or assistance, reach us now

How to configure NetFlow and NetFlow data export?

Prerequisites for Configuring NetFlow and NetFlow Data Export. Before you enable NetFlow: Configure the router for IP routing. Ensure that one of the following is enabled on your router, and on the interfaces that you want to configure NetFlow on: Cisco Express Forwarding (CEF), distributed CEF, or fast switching.

How are Flexible NetFlow records defined in Cisco?

Flexible pre-defined flow records are based on the original NetFlow ingress or egress caches. Cisco provides a unique keyword to identify the pre-defined records and these records can associated with a Flexible NetFlow Flow record configuration.