Unstable site-to-site VPN

Review tunnel logs, peer settings, and packet loss between gateways.

How to troubleshoot

1. Confirm the business impact, affected users, and any recent network or policy changes.
2. Review tunnel logs, peer settings, and packet loss between gateways.
3. Document the change and validate with an affected user before closing the incident.

When to get professional assistance

If these steps do not resolve the issue, or you suspect failing hardware, data loss, a security incident, or a production-system problem, consider qualified technical support. Back up important data where possible and obtain authorization before changing business systems.

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