Medianet Reference Guide - Cisco

Network-Embedded Management Functionality
Chapter 6
Medianet Management and Visibility Design Considerations
Besides individual flows, which may be challenging to identify from all the other flow data, some
NetFlow collectors can generate aggregate reporting information regarding the total amount of unicast,
broadcast, and multicast flows seen at a given point within the network infrastructure. An example is
shown in Figure 6-4.
Figure 6-4
Example of Aggregated Flow Data Reported By a NetFlow Collector
Note
Figure 6-4 shows a screen capture from the open source ntop NetFlow collector.
The combination of individual multicast flow information as well as aggregated flow information may
be useful in determining whether sufficient bandwidth has been provisioned across a particular point
within the medianet infrastructure to support existing multicast flows.
NetFlow Configuration Example
The configuration snippets in Example 6-1 and Example 6-2 show a basic NetFlow configuration on a
Cisco Catalyst 6500 Series Switch as well as on a Cisco IOS router platform. Note that this example
shows no flow filtering or sampling, which may be necessary to decrease CPU and/or bandwidth
utilization for NetFlow collection in production environments.
Example 6-1
NetFlow Configuration on a Cisco Catalyst 6500 Series Switch
mls netflow
! Enables NetFlow on the PFC
mls flow ip interface-full
! Sets the NetFlow flow mask
mls nde sender
! Enables NetFlow device export
!
!
~
!
!
interface TenGigabitEthernet6/1
description CONNECTION TO ME-EASTCORE-1 TEN5/4
ip address 10.16.100.13 255.255.255.252
ip flow ingress
! Enables MSFC NetFlow ingress on the interface
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Medianet Reference Guide
OL-22201-01