T0 or T1 in Failed state even after the alert causing configuration was corrected

Products

• VMware NSX

Issue/Introduction

• Tier0 or Tier1 remains in a failed state with either of the below error messages:
  • Subnet should not overlap with other logical router port of same logical router
  • LR port IP overlaps with NAT service(s)
  • [Routing] Logical-Switch-trunk-vlan-range vlan-ids:[[[####, ####]]] of LogicalSwitch/<switch ID> conflicts with another VLAN sharing same underlying Edge host-switch is not allowed. Change vlan configuration.
• There is no data path impact. The stale alarm shows on the Tier-0 or Tier-1 UI with a failed status.

Environment

VMware NSX-T Data Center 3.x
VMware NSX 4.0, 4.1

Cause

Error on the UI is due to the stale entry of type "-dlrp" object type in 'GenericPolicyRealizedResource' Corfu table which had been created during the first time when the segment realization failed. But that object not getting cleared even if the overlapping configuration has been corrected. 

Resolution

This issue is resolved in VMware NSX 4.2.0.

If this issue is encountered on a VMware NSX version before 4.2, please open a case with Broadcom Support for assistance.  

For more information, see Creating and managing Broadcom support cases.