> Source: [sk182368](https://support.checkpoint.com/results/sk/sk182368)

# sk182368 - AWS cluster fails to move over EIP's during failover 

| Property | Value |
|----------|-------|
| Solution ID | sk182368 |
| Date Created | 2024-06-05 |
| Last Modified | 2024-06-06 |
| Technical Level | Advanced |
| Products | Cloud Firewall |
| Versions | R81.10 (EOS), R81.20 |
| OS | Gaia |
| Platform | AWS |

## Symptoms

- * The AWS HA test script completes with all tests passed successfully.
* The `$FWDIR/log/aws_had.elg` file shows: "Exception: Unknown cluster mode 'Single VS'. Please verify cluster configuration".
* The `$FWDIR/boot/modules/fwkern.conf` file contains the following kernel parameter: **fwha_enable_state_machine_by_vs=1**.

## Cause

Check Point Per Virtual System State is enabled.

## Solution

This solution requires authentication. Please log in to view the full solution.

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