VCF Operations for Networks reports false loop intent for Cisco ACI data source.

Products

• VCF Operations for Networks

Issue/Introduction

• The following Loop Intent alert is raised for Cisco ACI data source in VCF Operations for Networks.
  
  • Group (Category) : Network Health
  • Intent Type: Loop Detection
  • Name: Loop Detection
  • UI Name: Network contains the following loop.
  • Severity: Critical
  • Description: Network should be loop free.
• The loop intent reported when the in-band management address in configured for APIC in Cisco ACI.
• From Cisco ACI point of view this is not a loop.

 

NOTE:  VCF Operations for Networks was formerly named Aria Operations for Networks (AON), and prior to that was named vRealize Network Insight (vRNI).

 

Environment

VCF Operations for Networks 6.14.0

Cause

The APIC controller in-band management IP and MAC address are learned as part of the routing information, but not as an endpoint information from the ACI. In the current VCF Operations for Networks implementation, the ARP entries in NAV model are created only for the endpoint which has been learned.

However, APIC in-band management IP and MAC address is not learned as part of endpoint information and hence appropriate ARP entries are not created in the NAV model, which may cause VCF Operations for Networks to report incorrect loop intent.

Resolution

If reporting of loop intent is not required, the alert in question can be disabled or the intent excluded, if necessary.
Please refer to the following document for specific instructions.

• Viewing and Editing Alert Definitions
• Define an Intent