> Source: [sk162952](https://support.checkpoint.com/results/sk/sk162952)

# sk162952 - IKEv2 VPN tunnel with Google Cloud VPN is unstable

| Property | Value |
|----------|-------|
| Solution ID | sk162952 |
| Date Created | 2019-10-10 |
| Last Modified | 2019-10-15 |
| Technical Level | Advanced |

## Symptoms

- * IKEv2 VPN tunnel between Check Point Gateway or Cluster to Google Cloud VPN works intermittently.
* Logs show that child SA for different networks are being negotiated frequently.

## Cause

Google Cloud VPN supports only one Child SA per tunnel. It expects all traffic selectors to be negotiated using only one Child SA.

This is documented in: [https://cloud.google.com/vpn/docs/concepts/choosing-networks-routing#traffic-selectors](https://cloud.google.com/vpn/docs/concepts/choosing-networks-routing#traffic-selectors "Google Cloud VPN")

Check Point negotiates a different Child SA per pair of tunnel selectors.

## Solution

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

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