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Configuring Data Export for Cisco IOS XE Flexible NetFlow with Flow Exporters

Table Of Contents

Configuring Data Export for Cisco IOS XE Flexible NetFlow with Flow Exporters

Finding Feature Information

Contents

Prerequisites for Configuring Data Export for Flexible NetFlow with Flow Exporters

Restrictions for Configuring Data Export for Flexible NetFlow with Flow Exporters

Information About Data Export for Flexible NetFlow with Flow Exporters

Flow Exporters

Benefits of Flexible NetFlow Flow Exporters

How to Configure Data Export for Flexible NetFlow with Flow Exporters

Flow Exporters

Restrictions

Configuring the Flow Exporter

Displaying the Current Status of a Flow Exporter

Verifying the Flow Exporter Configuration

Configuring and Enabling Flexible NetFlow with Data Export

Flow Monitors

Restrictions

Verifying That Data Export Is Enabled for the Flow Monitor Cache

Prerequisites

Configuration Examples for Flexible NetFlow Data Export with Flow Exporters

Example: Configuring Multiple Export Destinations

Example: Configuring Sending Export Packets Using QoS

Example: Configuring Version 5 Export for Flexible NetFlow

Where to Go Next

Additional References

Related Documents

Standards

MIBs

RFCs

Technical Assistance

Feature Information for Flexible NetFlow


Configuring Data Export for Cisco IOS XE Flexible NetFlow with Flow Exporters


First Published: June 19, 2006
Last Updated: September 28, 2010

This document contains information about and instructions for configuring flow exporters to export Flexible NetFlow data to remote systems such as a UNIX server running NetFlow collector.

NetFlow is a Cisco IOS technology that provides statistics on packets flowing through the router. NetFlow is the standard for acquiring IP operational data from IP networks. NetFlow provides data to support network and security monitoring, network planning, traffic analysis, and IP accounting.

Flexible NetFlow improves on original NetFlow by adding the capability to customize the traffic analysis parameters for your specific requirements. Flexible NetFlow facilitates the creation of more complex configurations for traffic analysis and data export through the use of reusable configuration components.

Finding Feature Information

Your software release may not support all the features documented in this module. For the latest feature information and caveats, see the release notes for your platform and software release. To find information about the features documented in this module, and to see a list of the releases in which each feature is supported, see the "Feature Information for Flexible NetFlow" section.

Use Cisco Feature Navigator to find information about platform support and Cisco software image support. To access Cisco Feature Navigator, go to http://www.cisco.com/go/cfn. An account on Cisco.com is not required.

Contents

Prerequisites for Configuring Data Export for Flexible NetFlow with Flow Exporters

Restrictions for Configuring Data Export for Flexible NetFlow with Flow Exporters

Information About Data Export for Flexible NetFlow with Flow Exporters

How to Configure Data Export for Flexible NetFlow with Flow Exporters

Configuration Examples for Flexible NetFlow Data Export with Flow Exporters

Where to Go Next

Additional References

Feature Information for Flexible NetFlow

Prerequisites for Configuring Data Export for Flexible NetFlow with Flow Exporters

The following prerequisites must be met before you can configure Flexible NetFlow:

You are familiar with the information in the "Cisco IOS Flexible NetFlow Overview" module.

The networking device must be running a Cisco IOS or Cisco IOS XE release that supports Flexible NetFlow. See the "Cisco IOS Flexible NetFlow Features Roadmap" module for a list of Cisco IOS software releases that support Flexible NetFlow.

IPv4 Traffic

The networking device must be configured for IPv4 routing.

One of the following must be enabled on your router and on any interfaces on which you want to enable Flexible NetFlow: Cisco Express Forwarding or distributed Cisco Express Forwarding.

IPv6 Traffic

The networking device must be configured for IPv6 routing.

One of the following must be enabled on your router and on any interfaces on which you want to enable Flexible NetFlow: Cisco Express Forwarding IPv6 or distributed Cisco Express Forwarding.

Restrictions for Configuring Data Export for Flexible NetFlow with Flow Exporters

The following restriction applies to configuring data export for Flexible NetFlow with flow exporters:

The NetFlow Version 5 export protocol that was first shipped in Cisco IOS Release 12.4(22)T is supported only for flow monitors that use the Flexible NetFlow predefined records (netflow-original, original input, and original output).

Information About Data Export for Flexible NetFlow with Flow Exporters

Flow Exporters

Benefits of Flexible NetFlow Flow Exporters

Flow Exporters

Flow exporters are created as separate components in a router's configuration. Exporters are applied to flow monitors to export the data from the flow monitor cache to a remote system such as a NetFlow collector. Flow monitors can support more than one exporter. Each exporter can be customized to meet the requirements of the flow monitor or monitors in which it is used and the NetFlow collector systems to which it is exporting data.

Benefits of Flexible NetFlow Flow Exporters

Flexible NetFlow allows you to configure many different flow exporters, depending on your requirements. Some of the benefits of Flexible NetFlow flow exporters are as follows:

Using flow exporters, you can create an exporter for every type of traffic that you want to analyze so that you can send each type of traffic to a different NetFlow collector.

Flow exporters support up to five exporters per flow monitor. Original NetFlow is limited to only two export destinations per cache.

Flow exporter traffic can be encrypted.

How to Configure Data Export for Flexible NetFlow with Flow Exporters

The tasks in this section explain how to export the data that is collected by Flexible NetFlow to a remote system for further analysis and storage.

Flow Exporters

Flow exporters are used to send the data that you collect with Flexible NetFlow to a remote system such as a NetFlow collector. Flow exporters use User Datagram Protocol (UDP) as the transport protocol.

Restrictions

Each flow exporter supports only one destination. If you want to export the data to multiple destinations, you must configure multiple flow exporters and assign them to the flow monitor. Flow exporters are added to flow monitors to enable data export from the flow monitor cache.


Note Only the keywords and arguments required for the Flexible NetFlow commands used in these tasks are explained in these tasks. For information about the other keywords and arguments available for these Flexible NetFlow commands, refer to the Cisco IOS Flexible NetFlow Command Reference.


To configure data export for Flexible NetFlow, perform the tasks in this section:

Configuring the Flow Exporter (required)

Displaying the Current Status of a Flow Exporter (optional)

Verifying the Flow Exporter Configuration (optional)

Configuring and Enabling Flexible NetFlow with Data Export (required)

Verifying That Data Export Is Enabled for the Flow Monitor Cache (optional)

Configuring the Flow Exporter

To configure the flow exporter, perform the following required task.

SUMMARY STEPS

1. enable

2. configure terminal

3. flow exporter exporter-name

4. description description

5. destination {ip-address | hostname} [vrf vrf-name]

6. export-protocol {netflow-v5 | netflow-v9}

7. dscp dscp

8. source interface-type interface-number

9. option {application-table | exporter-stats | interface-table | sampler-table | vrf-table} [timeout seconds]

10. template data timeout seconds

11. transport udp udp-port

12. ttl ttl

13. end

DETAILED STEPS

 
Command or Action
Purpose

Step 1 

enable

Example:

Router> enable

Enables privileged EXEC mode.

Enter your password if prompted.

Step 2 

configure terminal

Example:

Router# configure terminal

Enters global configuration mode.

Step 3 

flow exporter exporter-name

Example:

Router(config)# flow exporter EXPORTER-1

Creates the flow exporter and enters Flexible NetFlow flow exporter configuration mode.

This command also allows you to modify an existing flow exporter.

Step 4 

description description

Example:

Router(config-flow-exporter)# description Exports to the datacenter

(Optional) Configures a description to the exporter that will appear in the configuration and the display of the show flow exporter command.

Step 5 

destination {ip-address | hostname} [vrf vrf-name]

Example:

Router(config-flow-exporter)# destination 172.16.10.2

Specifies the IP address or hostname of the destination system for the exporter.

Step 6 

export-protocol {netflow-v5 | netflow-v9}

Example:

Router(config-flow-exporter)# export-protocol netflow-v9

Specifies the version of the NetFlow export protocol used by the exporter.

Default: netflow-v9.

Step 7 

dscp dscp

Example:

Router(config-flow-exporter)# dscp 63

(Optional) Configures differentiated services code point (DSCP) parameters for datagrams sent by the exporter.

The range for the dscp argument is from 0 to 63. Default: 0.

Step 8 

source interface-type interface-number

Example:

Router(config-flow-exporter)# source fastethernet1/0/0

(Optional) Specifies the local interface from which the exporter will use the IP address as the source IP address for exported datagrams.

Note The management interface can be configured as a source interface of an exporter. However, as Flexible NetFlow is not supported on the management interface, the source IP address will be that of the interface which is best connected to the collector, not that of the management interface.

Step 9 

option {application-table | exporter-stats | interface-table | sampler-table | vrf-table} [timeout seconds]

Example:

Router(config-flow-exporter)# option exporter-stats timeout 120

(Optional) Configures options data parameters for the exporter.

You can configure all options concurrently.

The range for the seconds argument is 1 to 86400. Default: 600.

Step 10 

template data timeout seconds

Example:

Router(config-flow-exporter)# template data timeout 120

(Optional) Configures the resending of templates based on a timeout.

The range for the seconds argument is 1 to 86400 (86400 seconds = 24 hours.) Default: 600.

Step 11 

transport udp udp-port

Example:

Router(config-flow-exporter)# transport udp 650

Specifies the UDP port on which the destination system is listening for exported datagrams.

The range for the udp-port argument is from 1 to 65536.

Step 12 

ttl ttl

Example:

Router(config-flow-exporter)# ttl 15

(Optional) Configures the time-to-live (TTL) value for datagrams sent by the exporter.

The range for the ttl argument is from 1 to 255. Default: 255.

Step 13 

end

Example:

Router(config-flow-exporter)# end

Exits flow exporter configuration mode and returns to privileged EXEC mode.

Displaying the Current Status of a Flow Exporter

To display the current status of a flow exporter, perform the following optional task.

SUMMARY STEPS

1. enable

2. show flow exporter [export-ids {netflow-v5 | netflow-v9} | [name] exporter-name [statistics | templates]]

DETAILED STEPS


Step 1 enable

The enable command enters privileged EXEC mode (enter the password if prompted).

Router> enable

Router#

Step 2 show flow exporter [export-ids {netflow-v5 | netflow-v9} | [name] exporter-name [statistics | templates]]

The show flow exporter command shows the current status of the flow exporter that you specify.

Router# show flow exporter EXPORTER-1

Flow Exporter EXPORTER-1:
  Description:              Exports to the datacenter
  Export protocol:          NetFlow Version 9
  Transport Configuration:
    Destination IP address: 172.16.10.2
    Source IP address:      172.16.6.2
    Source Interface:       Fastethernet1/0/0
    Transport Protocol:     UDP
    Destination Port:       650
    Source Port:            55864
    DSCP:                   0x3F
    TTL:                    15
    Output Features:        Used
  Options Configuration:
    exporter-stats (timeout 120 seconds)
    interface-table (timeout 120 seconds)
    sampler-table (timeout 120 seconds)

Verifying the Flow Exporter Configuration

To verify the configuration commands that you entered, perform the following optional task.

SUMMARY STEPS

1. enable

2. show running-config flow exporter exporter-name

DETAILED STEPS


Step 1 enable

The enable command enters privileged EXEC mode (enter the password if prompted).

Router> enable

Router#

Step 2 show running-config flow exporter exporter-name

The show running-config flow exporter command shows the configuration commands of the flow exporter that you specify.

Router# show running-config flow exporter EXPORTER-1

Building configuration...

Current configuration:
!
flow exporter EXPORTER-1
 description Exports to the datacenter
 destination 172.16.10.2
 source fastethernet1/0/0
 output-features
 dscp 63
 ttl 15
 transport udp 650
 template data timeout 120
 option exporter-stats timeout 120
 option interface-table timeout 120
 option sampler-table timeout 120
!
end

Configuring and Enabling Flexible NetFlow with Data Export

You must create a flow monitor to configure the types of traffic for which you want to export the cache data. You must enable the flow monitor by applying it to at least one interface to start exporting data. To configure and enable Flexible NetFlow with data export, perform this required task.

Flow Monitors

Each flow monitor has a separate cache assigned to it. Each flow monitor requires a record to define the contents and layout of its cache entries. The record format can be one of the predefined record formats, or an advanced user may create his or her own record format using the collect and match commands in Flexible NetFlow flow record configuration mode.

Restrictions

You must remove a flow monitor from all of the interfaces to which you have applied it before you can modify the record format of the flow monitor.

When you specify the "NetFlow IPv4 original input" or the "NetFlow IPv6 original input" predefined record for the flow monitor to emulate original NetFlow, the flow monitor can be used only for analyzing input (ingress) traffic.

When you specify the "NetFlow IPv4 original output" or the "NetFlow IPv6 original input" predefined record for the flow monitor to emulate the Egress NetFlow Accounting feature, the flow monitor can be used only for analyzing output (egress) traffic.

SUMMARY STEPS

1. enable

2. configure terminal

3. flow monitor monitor-name

4. record {netflow-original | netflow {ipv4 | ipv6} record [peer]}

5. cache {entries number | timeout {active seconds | inactive seconds | update seconds} | type {immediate | normal | permanent}}

6. description description

7. exporter exporter-name

8. statistics packet {protocol | size}

9. end

DETAILED STEPS

 
Command or Action
Purpose

Step 1 

enable

Example:

Router> enable

Enables privileged EXEC mode.

Enter your password if prompted.

Step 2 

configure terminal

Example:

Router# configure terminal

Enters global configuration mode.

Step 3 

flow monitor monitor-name

Example:

Router(config)# flow monitor FLOW-MONITOR-1

Creates a flow monitor and enters Flexible NetFlow flow monitor configuration mode.

This command also allows you to modify an existing flow monitor.

Step 4 

record {netflow-original | netflow {ipv4 | ipv6} record [peer]}

Example:

Router(config-flow-monitor)# record netflow-original

Specifies the record for the flow monitor.

Step 5 

cache {entries number | timeout {active seconds | inactive seconds | update seconds} | type {immediate | normal | permanent}}

Example:

Router(config-flow-monitor)# cache entries 16

(Optional) Configures a flow cache parameter for the flow monitor.

Step 6 

description description
Example:
Router(config-flow-monitor)# description 
Exports to the datacenter

(Optional) Configures a description for the flow monitor.

Step 7 

exporter exporter-name

Example:

Router(config-flow-monitor)# exporter EXPORTER-1

Specifies the name of an exporter that you created previously.

Step 8 

statistics packet {protocol | size}

Example:

Router(config-flow-monitor)# statistics packet protocol

(Optional) Collects protocol distribution statistics and size distribution statistics for a flow monitor.

Step 9 

end

Example:

Router(config-flow-monitor)# end

Exits Flexible NetFlow flow monitor configuration mode and returns to privileged EXEC mode.

Verifying That Data Export Is Enabled for the Flow Monitor Cache

To verify that data export is enabled for the flow monitor cache, perform the following optional task.


Note To display the current status of a flow exporter, refer to Displaying the Current Status of a Flow Exporter.


Prerequisites

Before you can display the flows in the flow monitor cache, the interface to which you applied the input flow monitor must be receiving traffic that meets the criteria defined by the NetFlow original record.

SUMMARY STEPS

1. enable

2. show flow monitor [[name] monitor-name [cache [format {csv | record | table}]] [statistics]]

DETAILED STEPS


Step 1 enable

The enable command enters privileged EXEC mode (enter the password if prompted).

Router> enable

Router#

Step 2 show flow monitor [[name] monitor-name [cache [format {csv | record | table}]] [statistics]]

Displays the status and statistics for a flow monitor.

Router# show flow monitor name FLOW-MONITOR-1

Flow Monitor FLOW-MONITOR-1:
  Description:       User defined
  Flow Record:       netflow original-input
  Flow Exporter:     EXPORTER-1
  Cache:
    Type:              normal 
    Status:            allocated
    Size:              4096 entries / 311316 bytes
    Inactive Timeout:  15 secs
    Active Timeout:    1800 secs
    Update Timeout:    1800 secs

Configuration Examples for Flexible NetFlow Data Export with Flow Exporters

This section provides the following configuration examples:

Example: Configuring Multiple Export Destinations

Example: Configuring Sending Export Packets Using QoS

Example: Configuring Version 5 Export for Flexible NetFlow

Example: Configuring Multiple Export Destinations

The following example shows how to configure multiple export destinations for Flexible NetFlow for IPv4 or IPv6 traffic.

This sample starts in global configuration mode:

!
flow exporter EXPORTER-1
 destination 172.16.10.2
 transport udp 90
 exit
!
flow exporter EXPORTER-2
 destination 172.16.10.3
 transport udp 90
 exit
!
flow monitor FLOW-MONITOR-1
 record netflow ipv4 original-input
 exporter EXPORTER-2
 exporter EXPORTER-1
!
!
flow monitor FLOW-MONITOR-2
 record netflow ipv6 original-input
 exporter EXPORTER-2
 exporter EXPORTER-1
!
ip cef
!
interface fastethernet1/0/0
 ip address 172.16.6.2 255.255.255.0
 ipv6 address 2001:DB8:2:ABCD::2/48
 ip flow monitor FLOW-MONITOR-1 input
 ipv6 flow monitor FLOW-MONITOR-2 input

!

The following display output shows that the flow monitor is exporting data to the two exporters:

Router# show flow monitor FLOW-MONITOR-1

Flow Monitor FLOW-MONITOR-1:
  Description:       User defined
  Flow Record:       netflow original-input
  Flow Exporter:     EXPORTER-1
                     EXPORTER-2
  Cache:
    Type:              normal (Platform cache)
    Status:            allocated
    Size:              4096 entries / 311316 bytes
    Inactive Timeout:  15 secs
    Active Timeout:    1800 secs
    Update Timeout:    1800 secs 

Example: Configuring Sending Export Packets Using QoS

The following example shows how to configure sending Flexible NetFlow export packets using quality of service (QoS).


Note The Flexible NetFlow export packets to the destination host (IP address 10.0.1.2) are transmitted on FastEthernet interface 1/1/1 using QoS.


This sample starts in global configuration mode:

!
flow record FLOW-RECORD-1
 match ipv4 source address
 collect counter packets
!
flow exporter FLOW-EXPORTER-1
 destination 10.0.1.2
 output-features
 dscp 18
!
flow monitor FLOW-MONITOR-1
 record FLOW-RECORD-1
 exporter FLOW-EXPORTER-1
 cache entries 1024
!
ip cef
!
class-map match-any COS3
!
policy-map PH_LABS_FRL_64k_16k_16k_8k_8k
 class COS3
  bandwidth percent 2
  random-detect dscp-based
  random-detect exponential-weighting-constant 1
  random-detect dscp 18 200 300 10
!
interface fastethernet1/0/0
 ip address 10.0.0.1 255.255.255.0
 ip flow monitor FLOW-MONITOR-1 input
!
interface fastethernet1/1/1
 ip address 10.0.1.1 255.255.255.0
 service-policy output PH_LABS_FRL_64k_16k_16k_8k_8k
!

The following display output shows that the flow monitor is exporting data using output feature support that enables the exported data to use QoS:

Router# show flow monitor FLOW-MONITOR-1

Flow Exporter FLOW-EXPORTER-1:
  Description:              User defined
  Tranport Configuration:
    Destination IP address: 10.0.1.2
    Source IP address:      10.0.0.1
    Transport Protocol:     UDP
    Destination Port:       9995
    Source Port:            56750
    DSCP:                   0x12
    TTL:                    255
    Output Features:        Used

Example: Configuring Version 5 Export for Flexible NetFlow

The following example shows how to configure version 5 export for Flexible NetFlow.

This sample starts in global configuration mode:

!
flow exporter EXPORTER-1
 destination 172.16.10.2
 export-protocol netflow-v5
 transport udp 90
 exit
!
flow monitor FLOW-MONITOR-1
 record netflow ipv4 original-input
 exporter EXPORTER-1
!

ip cef
!
interface fastethernet1/0/0
 ip address 172.16.6.2 255.255.255.0
 ip flow monitor FLOW-MONITOR-1 input

!

Where to Go Next

For information on advanced Flexible NetFlow configurations for specific purposes such as QoS and bandwidth monitoring, application and user flow monitoring and profiling, and security analysis, refer to the "Customizing Cisco IOS XE Flexible NetFlow Flow Records and Flow Monitors" module.

If you want to configure flow sampling to reduce the CPU overhead of analyzing traffic, refer to the "Using Cisco IOS XE Flexible NetFlow Flow Sampling to Reduce the CPU Overhead of Analyzing Traffic" module.

If you want to configure any of the predefined records for Flexible NetFlow, refer to the "Configuring Cisco IOS XE Flexible NetFlow with Predefined Records" module.

Additional References

Related Documents

Related Topic
Document Title

Cisco IOS commands

Cisco IOS Master Commands List, All Releases

Overview of Flexible NetFlow

"Cisco IOS XE Flexible NetFlow Overview"

Flexible NetFlow Feature Roadmap

"Cisco IOS Flexible NetFlow Features Roadmap"

Emulating original NetFlow with Flexible NetFlow

"Getting Started with Configuring Cisco IOS XE Flexible NetFlow"

Customizing Flexible NetFlow

"Customizing Cisco IOS XE Flexible NetFlow Flow Records and Flow Monitors"

Configuring flow sampling to reduce the overhead of monitoring traffic with Flexible NetFlow

"Using Cisco IOS XE Flexible NetFlow Flow Sampling to Reduce the CPU Overhead of Analyzing Traffic"

Configuring Flexible NetFlow using predefined records

"Configuring Cisco IOS XE Flexible NetFlow with Predefined Records"

Configuration commands for Flexible NetFlow

Cisco IOS Flexible NetFlow Command Reference


Standards

Standard
Title

None


MIBs

MIB
MIBs Link

None

To locate and download MIBs for selected platforms, Cisco software releases, and feature sets, use Cisco MIB Locator found at the following URL:

http://www.cisco.com/go/mibs


RFCs

RFC
Title

RFC 3954

Cisco Systems NetFlow Services Export Version 9


Technical Assistance

Description
Link

The Cisco Support website provides extensive online resources, including documentation and tools for troubleshooting and resolving technical issues with Cisco products and technologies.

To receive security and technical information about your products, you can subscribe to various services, such as the Product Alert Tool (accessed from Field Notices), the Cisco Technical Services Newsletter, and Really Simple Syndication (RSS) Feeds.

Access to most tools on the Cisco Support website requires a Cisco.com user ID and password.

http://www.cisco.com/cisco/web/support/index.html


Feature Information for Flexible NetFlow

Table 1 lists the features in this module and provides links to specific configuration information.

Use Cisco Feature Navigator to find information about platform support and software image support. Cisco Feature Navigator enables you to determine which software images support a specific software release, feature set, or platform. To access Cisco Feature Navigator, go to http://www.cisco.com/go/cfn. An account on Cisco.com is not required.


Note Table 1 lists only the software release that introduced support for a given feature in a given software release train. Unless noted otherwise, subsequent releases of that software release train also support that feature.


Table 1 Feature Information for Flexible NetFlow 

Feature Name
Releases
Feature Information

Flexible NetFlow

Cisco IOS XE Release 3.1S

Support for this feature was added for Cisco ASR 1000 Series Aggregation Services routers in Cisco IOS XE Release 3.1S.

Information about the Flexible NetFlow feature is included in the following sections:

Prerequisites for Configuring Data Export for Flexible NetFlow with Flow Exporters

Information About Data Export for Flexible NetFlow with Flow Exporters

How to Configure Data Export for Flexible NetFlow with Flow Exporters

Configuration Examples for Flexible NetFlow Data Export with Flow Exporters

The following commands were introduced or modified: cache (Flexible NetFlow), clear flow exporter, clear flow monitor, clear sampler, collect counter, collect flow, collect interface, collect ipv4, collect ipv4 destination, collect ipv4 fragmentation, collect ipv4 section, collect ipv4 source, collect ipv4 total-length, collect ipv4 ttl, collect routing, collect timestamp sys-uptime, collect transport, collect transport icmp ipv4, collect transport tcp, collect transport udp, debug flow exporter, debug flow monitor, debug flow record, debug sampler, description (Flexible NetFlow), destination, dscp (Flexible NetFlow), exporter, flow exporter, flow monitor, flow record, ip flow monitor, match flow, match interface (Flexible NetFlow), match ipv4, match ipv4 destination, match ipv4 fragmentation, match ipv4 section, match ipv4 source, match ipv4 total-length, match ipv4 ttl, match routing, match transport, match transport icmp ipv4, match transport tcp, match transport udp, mode (Flexible NetFlow), option (Flexible NetFlow), record, sampler, show flow exporter, show flow interface, show flow monitor, show flow record, show sampler, source (Flexible NetFlow), statistics packet, template data timeout, transport (Flexible NetFlow).

Flexible NetFlow—IPv4 Unicast Flows

Cisco IOS XE Release 3.1S

Enables Flexible NetFlow to monitor IPv4 traffic.

Support for this feature was added for Cisco ASR 1000 Series Aggregation Services routers in Cisco IOS XE Release 3.1S.

Information about the Flexible NetFlow—IPv4 Unicast Flows feature is included in the following sections:

Configuring and Enabling Flexible NetFlow with Data Export

Example: Configuring Multiple Export Destinations

The following commands were introduced or modified: collect routing, debug flow record, collect ipv4, collect ipv4 destination, collect ipv4 fragmentation, collect ipv4 section, collect ipv4 source, ip flow monitor, match ipv4, match ipv4 destination, match ipv4 fragmentation, match ipv4 section, match ipv4 source, match routing, record, show flow monitor, show flow record.

Flexible NetFlow—NetFlow v9 Export Format

Cisco IOS XE Release 3.1S

Enables sending export packets using the Version 9 export format.

Support for this feature was added for Cisco ASR 1000 Series Aggregation Services routers in Cisco IOS XE Release 3.1S.

Information about the Flexible NetFlow—NetFlowv9 Export Format feature is included in the following sections:

Configuring the Flow Exporter

No commands were introduced or modified by this feature.

Flexible NetFlow—IPv6 Unicast Flows

Cisco IOS XE Release 3.3S

Enables Flexible NetFlow to monitor IPv6 traffic.

Information about the Flexible NetFlow—IPv6 Unicast Flows feature is included in the following sections:

Configuring and Enabling Flexible NetFlow with Data Export

Example: Configuring Multiple Export Destinations

The following commands were introduced or modified: collect routing, debug flow record, match routing, record, show flow monitor, show flow record, collect ipv6, collect ipv6 destination, collect ipv6 extension map, collect ipv6 fragmentation, collect ipv6 hop-limit, collect ipv6 length, collect ipv6 section, collect ipv6 source, collect transport icmp ipv6, ipv6 flow monitor, match ipv6, match ipv6 destination, match ipv6 extension map, match ipv6 fragmentation, match ipv6 hop-limit, match ipv6 length, match ipv6 section, match ipv6 source, match transport icmp ipv6.

Flexible NetFlow—Output Features on Data Export

Cisco IOS XE Release 3.1S

Enables sending export packets using QoS and encryption.

Support for this feature was added for Cisco ASR 1000 Series Aggregation Services routers in Cisco IOS XE Release 3.1S.

Information about the Flexible NetFlow—Output Features on Data Export feature is included in the following sections:

Configuring the Flow Exporter

Example: Configuring Sending Export Packets Using QoS

The following command was introduced: output-features.

Flexible NetFlow—NetFlow v5 Export Protocol

Cisco IOS XE Release 3.1S

Enables sending export packets using the Version 5 export protocol.

Support for this feature was added for Cisco ASR 1000 Series Aggregation Services routers in Cisco IOS XE Release 3.1S.

Information about the Flexible NetFlow—NetFlowv5 export protocol feature is included in the following sections:

Restrictions for Configuring Data Export for Flexible NetFlow with Flow Exporters

Configuring the Flow Exporter

Example: Configuring Version 5 Export for Flexible NetFlow

The following command was introduced: export-protocol.