The Meraki VPN concentrator hub at the data center fails, breaking all Auto VPN tunnels in the mesh. 8 branch sites lose connectivity to central resources including file shares, ERP, and VoIP.
Pattern
MERAKI_EVENT
Severity
CRITICAL
Confidence
85%
Remediation
Remote Hands
Test Results
Metric
Expected
Actual
Result
Pattern Recognition
MERAKI_EVENT
MERAKI_EVENT
Severity Assessment
CRITICAL
CRITICAL
Incident Correlation
Yes
56 linked
Cascade Escalation
Yes
Yes
Remediation
—
Remote Hands — Corax contacts on-site support via call, email, or API
Scenario Conditions
Meraki MX250 as VPN hub at data center. 8 branch MX67 appliances in Auto VPN mesh topology. Hub-and-spoke with full tunnel mode. No secondary hub configured.
Injected Error Messages (4)
Meraki VPN hub MX250 offline — data center VPN concentrator unreachable, Dashboard reports device offline, all Auto VPN tunnels terminated, 8 branch sites disconnected
Meraki Auto VPN tunnel down at Branch-Chicago — hub peer unreachable, VPN state: not connected, all traffic to DC resources failing, local internet breakout active
ERP application unreachable from all branch sites — Meraki VPN hub failure causing branch-to-DC routing blackhole, 8 sites reporting connectivity loss to 10.10.100.0/24
VoIP inter-site calling failed — SIP trunk between branches and DC PBX down after Meraki VPN hub failure, all inter-office calls dropping, RTP stream timeout
Neural Engine Root Cause Analysis
The Meraki MX250 VPN concentrator in the data center has gone offline, causing a complete failure of the Auto VPN infrastructure. This appears to be a hardware or power failure of the physical device rather than a network connectivity issue, as the Meraki Dashboard itself reports the device as offline. The cascade of 18 correlated incidents within the same timeframe suggests this is the primary failure point causing widespread connectivity loss to 8 branch sites that depend on this central hub for VPN connectivity.
Remediation Plan
1. Verify physical status of MX250 device (power, LED indicators, console access). 2. Check power supply and network connections to the device. 3. Attempt device reboot via power cycle if accessible. 4. If device remains unresponsive, engage Meraki support for hardware replacement. 5. Consider activating backup/secondary VPN concentrator if available. 6. Monitor branch site connectivity restoration as primary hub comes back online. 7. Implement redundancy planning to prevent single point of failure in future.