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Cisco Bug: CSCvt81598 - DCNM does not handle duplicate management IPs within fabric well

Last Modified

May 13, 2020

Products (1)

  • Cisco Data Center Network Manager

Known Affected Releases

11.3(1)

Description (partial)

Symptom:
Consider a scenario wherein a DCNM-managed fabric has two devices (hostnames Leaf-10 and Leaf-250) with duplicate management IP addresses. While the duplicate IP address scenario exists, DCNM will intermittently detect both Leaf-10 and Leaf-250 within the Fabric Builder interface. Once the duplicate IP address scenario is resolved (meaning, one of the management IP addresses is changed to a unique value), DCNM will only detect the presence of the duplicate device (Leaf-250) instead of the device that owns the IP address (Leaf-10).

While in this state, DCNM is unable to apply configuration to the original device (Leaf-10) nor the duplicate device (Leaf-250).

Conditions:
1. DCNM is managing a fabric
2. A duplicate management IP address scenario previously existed in a DCNM-managed fabric involving two devices that can be managed by DCNM.
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