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NetFlow Traffic Analyzer (NTA)

Forum Unmonitored interface after adding netflow to nexus 7k

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Unmonitored interface after adding netflow to nexus 7k

tfljp over 10 years ago

I recently added netflow to our nexus 7k and getting these messages. I know they refer to our vlans on the nexus and I am currently monitoring those vlans. I have seen reports about using the snmp-server ifindex persist command but when I try to issue the command the nexus doesn't like it. looking at the command options ifindex is not one of them. Any suggestions.

NetFlow Receiver Service [SW] is receiving flow data from unmanaged interface '#8' on nexus and it does not support SNMP. Click the "Add this interface" to manage interface and process its flow data.

0 donthomas over 10 years ago

Just realized that NX-OS has ifindex persistence enabled by default. But I also happened to find this thread where it says that ifindex can change.
https://supportforums.cisco.com/thread/2187129
Could it be that you have an older IOS on the device? And can you check the interface name for ifindex8 on the Nexus. I believe the command for NX-OS is "show interface snmp-ifindex". You can check the interface name for ifindex 8 and then check if NPM is managing it or not.
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