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Should I also test VPN access during failover to ensure remote control stays reachable?

Industrial Automation Connectivity · 2026-09-30

Yes. Include VPN continuity as part of your end-to-end failover tests. Verify that the remote-management VPN tunnel remains usable when the active WAN path switches or re-routes, and that control endpoints stay reachable on the backup path. During testing, check session restoration timing, authentication, and any re-keying events. Log failover events, IP/address changes, and VPN reconnect metrics, and adjust firewall or routing rules if needed to keep remote access reliable through a switch.

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