Tag: VPN Gateway

2 posts tagged with "VPN Gateway"

🔧 TroubleshootingAzure VPN Gateway BGP Networking Troubleshooting ExpressRoute

Fixing Azure VPN Gateway High CPU: BGP Route Explosion Diagnosis and Fix

If your VPN Gateway CPU is above 85% while traffic volume looks normal, BGP route bloat is almost certainly the cause. This guide covers the exact commands to diagnose it, route summarization on the CE router, an Azure-side prefix filter for defense in depth, and when to upgrade the gateway SKU.

June 29, 2026•Read more →

🔧 TroubleshootingAzure ExpressRoute BGP Hybrid Connectivity Troubleshooting High Availability VPN Gateway

How to Diagnose Azure ExpressRoute Gateway Control-Plane Failure

If your ExpressRoute Gateway shows BGP Connected but cross-premises traffic is down and effective routes on spoke VNet NICs are empty, the gateway has a control-plane failure. This guide covers the diagnostic commands to confirm it, a regional failover procedure, and the zone-redundant HA architecture to prevent recurrence.

June 4, 2026•Read more →