> Source: [sk163499](https://support.checkpoint.com/results/sk/sk163499)

# sk163499 - Site to site VPNs established, but do not pass any traffic

| Property | Value |
|----------|-------|
| Solution ID | sk163499 |
| Date Created | 2019-11-13 |
| Last Modified | 2019-11-14 |
| Technical Level | Advanced |

## Symptoms

- Site to site VPNs are established, but do not pass any traffic even though IKE phase 1 and phase 2 are completed and tcpdump shows that ESP packets are being sent.

## Cause

There is another gateway, or virtual system object with the same IP-address and VPN enabled, than the one that should participate in VPN.

This can happen after a hardware upgrade, where the existing gateway, or virtual system, has been replaced and a new object with the same IP address has been created.

## Solution

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

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