VMware NSX Alarms UI displays "IP Pool Usage very high"

Products

• VMware NSX

Issue/Introduction

This article provides a resolution when the VMware NSX Home > Alarms UI displays the following event:

• Event ID: IP Pool Usage Very High

 

Environment

VMware NSX 3.1.2

Cause

While allocating the IP from the IP pool, NSX checks that the total remaining IPs for allocation should not be less than 10%. If the remaining IPs for further IP allocation is less than 10% VMware NSX raises an alarm.

Resolution

This is a condition that may occur in a VMware NSX environment.

Note:  A maintenance window is not required for remediation.

 

Workaround

Review the IP pool usage. You can resolve it by any of the below-mentioned steps:

• Add a new subnet in the IP pool, this will extend the available range of IPs for allocations.
• Create a new IP pool and use it for allocation.
• Release the unused IP allocations from the IP pool. Contact VMware support for this process. 

 

Note: Releasing the IPAllocations must be done carefully, only after confirming that the given IP is not being used anywhere, or it will create issues with other systems.

Impact

You may not be able to allocate an IP from the IP Pool in the future, due to limited IPs available in the IP Pool for allocation.