Subinterfaces Not Getting Mapped


Article ID: 4840


Updated On:


CA Network Flow Analysis (NetQos / NFA)


Interfaces showing up without any 'ifName' and only with 'ifIndex'. Also, the speed shows up as 'Unknown'.


The cause for this issue is that there is a device limitation which does not produce the data necessary for the subinterfaces to populate the information in question.


NFA; Palo Alto Firewall


The resolution for this issue is to prove that NFA is working as designed by using a third party tool as follows:

1. Download and install Paessler SNMP Tester.

2. Run a Walk test with if type to list the if type of all the interfaces

3. Run a Walk test with if description to list the if description of all the interfaces

The test should show whether or not the device itself is producing the information in question.