> Source: [sk171038](https://support.checkpoint.com/results/sk/sk171038)

# sk171038 - Traffic over a VPN tunnel cannot reach a Standby member in a Spark Firewall Cluster

| Property | Value |
|----------|-------|
| Solution ID | sk171038 |
| Date Created | 2020-12-19 |
| Last Modified | 2022-07-13 |
| Technical Level | Advanced |
| Products | Spark Firewall (Locally Managed) |
| Versions | R81.10.X |
| Platform | 400, 110, 1500, 1600, 1800 |

## Symptoms

- * The traffic fails from a VPN peer to a Standby member of a cluster of Quantum Spark appliances.

* Kernel debug on the Standby member shows that the traffic is dropped:

  `fw_log_drop_ex: Packet proto=<Protocol Number> <IP Address and Port of VPN Peer> -> <IP Address and Port of Standby Member> dropped by vp_drop_and_log Reason: Clear text packet should be encrypted;`
* The traffic from a VPN peer successfully reaches the Active member of a cluster of Quantum Spark appliances.

## Cause

This is a known limitation in a cluster of Quantum Spark / SMB appliances that run R77.20.x / R80.20.x versions.

## Solution

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

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