> Source: [sk162494](https://support.checkpoint.com/results/sk/sk162494)

# sk162494 - ClusterXL failover due to multiple pnotes on VSX cluster

| Property | Value |
|----------|-------|
| Solution ID | sk162494 |
| Date Created | 2019-09-18 |
| Last Modified | 2020-07-29 |
| Technical Level | Advanced |
| Products | Security Gateway |
| Versions | R82.10, R82, R81.20 |
| OS | Gaia |

## Symptoms

- * Cluster failover seems to be constantly happening for VSX clusters every few seconds / minutes.
* Cluster failover on VSLS clusters although the issue may not be noticeable due to automatic recovery after a few seconds.
* External monitoring system (SNMP server for instance) gets multiple alerts regarding cluster failover, although service does not seem to be impacted.
* Logs from `fwk.elg` at the Virtual System level show multiple different pnotes as the cause of the issue ('VSX', 'routed', 'sync').
* Cluster debugs (`fw ctl debug -m cluster + stat pnote ccp conf`) show the pnote messages and transitions but no clear indication of the root cause.

## Cause

ClusterXL ccp mode 'multicast' is not fully supported by network devices.

## Solution

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

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