NFA Versa SNMP issue

Products

• CA Network Flow Analysis (NetQos / NFA)

Issue/Introduction

If you try to SNMP poll a Versa device in NFA, you will get a polling failure on all versions of NFA prior to NFA 21.2.2.

Environment

Component : NQRPTA - REPORTERANALYZER

Cause

In NFA, to fetch the VRF name via SNMP in an MPLS configured network we rely on mplsVpnInterfaceConfEntry OID. The syntax of which is {mplsVpnVrfName, mplsVpnInterfaceConfIndex} which means the configuration should contain vrfName followed by ifIndex in the MIB. Versa devices have the order reversed which causes the NFA Poller to run into an exception.

Resolution

NFA Development altered the Poller code to handle the exception gracefully. These changes can be found in the NFA 21.2.2 release scheduled for mid-August 2021.