We’ve been discussing Cisco AVC NetFlow reporting a lot lately, but what if you’re not yet at the latest Cisco IOS revisions?  If you have IOS 15.1(3), but not 15.1(4), no worries, Cisco Performance Monitoring NetFlow reporting can still provide some valuable performance metrics reporting for you.

The minimum revision requirement for performance monitor phase 1 is Cisco IOS version 15.1(3)T.  Phase 1 provides data for reporting on jitter, packet loss, round trip times, NBAR reporting, and more.

Here’s an example of the rich NetFlow reporting available with Performance Monitor Phase 1.

Cisco Performance Monitoring NetFlow jitter report

Not only do you get some really great network performance reporting, but you can also get basic flow accounting information for your NetFlow reporting (bandwidth monitoring, conversations, top talkers, etc.).  I came upon this while working with a prospective customer, Lee, helping him with his router’s NetFlow configurations.

Performance Monitoring NetFlow configuration

So without further ado, let’s jump into the Flexible NetFlow configuration required for that advanced reporting.

We started with the NetFlow configuration example given in the Cisco Performance Reporting on your Medianet blog and expanded on it to include the basic flow accounting information that Lee required.

By adding an additional flow record, and with a little tweaking here and there, Lee was then able to meet his own requirements and very graciously shared his configuration with us.

I’ve included the full Performance Monitoring NetFlow configuration below, with Lee’s additions for basic Flow Accounting in red.

********************************************************************

Update from Lee:

“One caveat that I have found is: in order to get the “match protocol cisco-phone” command to work in the “realtime” class-map, the router has to have a Data license.

This can be turned on with this command:

Router(config-if)# license boot module c2900 technology-package datak9″

********************************************************************

ip cef
!
flow record type performance-monitor TCP
match ipv4 protocol
match ipv4 source address
match ipv4 source prefix
match ipv4 destination address
match ipv4 destination prefix
match transport source-port
match transport destination-port
collect routing forwarding-status
collect ipv4 dscp
collect ipv4 ttl
collect ipv4 source mask
collect ipv4 destination mask
collect transport round-trip-time
collect transport event packet-loss counter
collect interface input
collect interface output
collect counter bytes
collect counter packets
collect counter bytes rate
collect timestamp interval
collect application media bytes counter
collect application media packets rate
collect application media event
collect monitor event
!
!
flow record type performance-monitor RTP
match ipv4 protocol
match ipv4 source address
match ipv4 source prefix
match ipv4 destination address
match ipv4 destination prefix
match transport source-port
match transport destination-port
match transport rtp ssrc
collect routing forwarding-status
collect ipv4 dscp
collect ipv4 ttl
collect ipv4 source mask
collect ipv4 destination mask
collect transport packets expected counter
collect transport packets lost counter
collect transport packets lost rate
collect transport event packet-loss counter
collect transport rtp jitter mean
collect transport rtp jitter minimum
collect transport rtp jitter maximum
collect interface input
collect interface output
collect counter bytes
collect counter packets
collect counter bytes rate
collect timestamp interval
collect application media bytes counter
collect application media bytes rate
collect application media packets counter
collect application media packets rate
collect application media event
collect monitor event
!
!
flow record FNF
 match ipv4 tos
 match ipv4 protocol
 match ipv4 source address
 match ipv4 destination address
 match transport source-port
 match transport destination-port
 match interface input
 match interface output
 match flow direction
 collect routing source as
 collect routing destination as
 collect routing next-hop address ipv4
 collect ipv4 source prefix
 collect ipv4 destination prefix
 collect transport tcp flags
 collect counter bytes
 collect counter packets
 collect timestamp sys-uptime first
 collect timestamp sys-uptime last
!
!
flow exporter SCRUTINIZER
description FLEXIBLE NF V9
destination [ Scrutinizer's IP]
source [Interface]
transport udp 2055
template data timeout 60
option interface-table
option exporter-stats
option application-table
!
!
flow monitor type performance-monitor RTP
description RTP stats
record RTP
exporter SCRUTINIZER
!
!
flow monitor type performance-monitor TCP
description TCP stats
record TCP
exporter SCRUTINIZER
!
!
flow monitor FNF
 exporter SCRUTINIZER
 cache timeout active 60
 record FNF
!
class-map match-any TCP-class
match access-group 100
!
class-map match-any realtime
match protocol rtp audio
match protocol rtp video
match protocol cisco-phone
!
policy-map type performance-monitor RTPMON
class realtime
flow monitor RTP
monitor parameters
interval duration 10
flows 100
class TCP-class
flow monitor TCP
monitor parameters
flows 1000
!
access-list 100 permit tcp any any
!

!Interface configuration

ip flow monitor FNF input
ip flow monitor FNF output
service-policy type performance-monitor input RTPMON
service-policy type performance-monitor output RTPMON

 

If you’d like to discuss this further, please contact us directly at 207-324-8805 x3 and we can show you how to get the most out of Cisco Performance NetFlow reporting.

Joanne Ghidoni author pic

Joanne Ghidoni

Joanne is a Software Quality Assurance Engineer at Plixer. She has also held positions as Technical Support Engineer and Sales Engineer since joining Plixer in 2005. Prior to joining Plixer, Joanne has had numerous positions in the IT field, including data entry, computer operator, PC coordinator and support, mainframe programmer, and also Technical Support and web programmer at Cabletron Systems. In her spare time, Joanne enjoys traveling, always seeking out new and interesting places to visit.

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