Specifications

5-6
Catalyst 6500 Series Switch and Cisco 7600 Series Router Network Analysis Module Installation and Configuration Note
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Chapter 5 Troubleshooting the Network Analysis Module
Netflow Data Export
Router(config)# interface b
Router(config-if)# ip route cache flow
Router(config-if)# exit
Router(config)# ip flow export destination
NAM-Address 3000
Router(config)# exit
Router#
Recommended Action In most cases, turning on NetFlow on an interface will populate the NetFlow
cache in a switch or router with flows that are in the input direction of the interface. As a result, the
input SNMP if-index field in the flow record will have the if-index of the interface that has NetFlow
turned on.
Interface Special (0)
Explanation NDE packets sometimes have NetFlow records reporting either or both input if-index
and output if-index fields as 0. This problem may be due to one or more of the following reasons:
– Flows that are terminated at the device.
– Configurations of the device.
– Unsupported NetFlow feature of the platform at the device.
Recommended Action Remove flows that terminate at the device, check the device configuration, and
make sure there are no unsupported features on this platform at the device.
NDE Flow Mask and v8 Aggregation Cache
This section describes how some of the flow masks and NDE version 8 aggregation flows affect the data
collection screens in the NAM. Table 5-3 lists the effects on the data collection screens. Due to a lack of
information, some collections may display “Others” only in the Monitor > Apps, 0.0.0.0 in Monitor >
Hosts and Monitor > Conversation pages.
Table 5-2 Reporting Flow Records
From To Are Flows Reported?
ab Yes
ac Yes
bc Yes
ba Yes
ca No
cb No