Problem Summary The enterprise monitoring tool detected flapping tunnels between remote branch routers and the HQ hub.Ticket Priority: HighIssue: DMVPN Phase 2 Tunnel intermittently goes UP/DOWN, causing loss of reachability to HQ and apps like VoIP. Symptoms Observed Symptom Description Tunnel state flapping Tunnel interface […]
![Ticket#9 - WAN Flap Detection: DMVPN Phase 2 Tunnel Up/Down Issue Fixed [CCNP Enterprise]](https://networkjourney.com/wp-content/uploads/2025/07/nj-blog-post-Ticket-9.jpg)
![Redundancy Unleashed: Keeping Enterprise Networks Always-On [CCNP Enterprise]](https://networkjourney.com/wp-content/uploads/2025/06/Redundancy-Unleashed_-Keeping-Enterprise-Networks-Always-On_networkjourney.png)
