How to configure a Cisco ISR router to send Netflow v5 data to VOSS Insights arbitrator 
-------------------------------------------------------------------------------------------
 
Abstract 
...........

This document provides the procedure to configure a Cisco ISR router to
send Netflow data to 
VOSS Insights arbitrator using v5 format. 

Assumptions 
...............

This document assumes that the following configuration will be applied
on a Cisco ISR router with 
two interfaces: 

*  GigabitEthernet0/0/0 
*  GigabitEthernet0/0/1 
 
For the purposes of this guide, the following software specifications
are assumed: 

::

   isr4300-3977#show version 
   Cisco IOS XE Software, Version 03.16.04b.S - Extended Support Release 
   Cisco IOS Software, ISR Software (X86_64_LINUX_IOSD-UNIVERSALK9-M),
   Version 
   15.5(3)S4b, RELEASE SOFTWARE (fc1)  
 
VOSS Insights Team recommends that Netflow is configured
and enabled in the "ingress" direction for all 
interfaces on a Netflow source device. 

 
Configuration 
..............

The following sample configuration can be used as
a template for Netflow v5: 

ENABLE SNMP INDEX PERSISTENCE 

::

   isr4300-3977#configure terminal 


Enter configuration commands, one per line.  End with **CTRL-Z**. 

::

   isr4300-3977(config)#snmp-server ifindex persist 
   isr4300-3977(config)# 
 
NETFLOW CONFIGURATION 
 
::

   isr4300-3977(config)#flow exporter lxexporter-1 
     
   destination [VOSS Insights arbitrator IP Address] 
     
   export-protocol netflow-v5 
     
   transport udp [Netflow Collector Port] 
     
   exit 
    
   isr4300-3977(config)#flow monitor lx-flowmonitor-1 
     
   record netflow ipv4 original-input 
     
   exporter lxexporter-1 
    
   exit 
    
   isr4300-3977(config)#ip cef distributed 
    
   isr4300-3977(config)#interface GigabitEthernet0/0/0 
     
   ip flow monitor lx-flowmonitor-1 input 
    
   exit 
    
   isr4300-3977(config)#interface GigabitEthernet0/0/0 
     
   ip flow monitor lx-flowmonitor-1 output 
    
   exit 
    
   isr4300-3977(config)#exit 
    
   #copy run start 
 
.. note::
 
   Please note that VOSS Insights arbitrator uses UDP 9996 to
   receive Netflow v5 by default.