New on ignaonline.com — Sarah Chen walks through a complete DMVPN Phase 2 setup on Cisco IOS-XE.

This guide covers everything: IKEv2 IPsec with AES-256, mGRE tunnel configuration for hub and spokes, NHRP registration with OSPF next-hop preservation (the step most Phase 2 deployments get wrong), and all four common failure modes with real debug output and fixes.

Also included: NAT traversal tuning for branch spokes behind firewalls, dual-hub redundancy config, and a monitoring command reference.

Read the full guide →