DMVPN Phase 2 Configuration on Cisco IOS-XE: Hub-and-Spoke with Direct Spoke-to-Spoke Tunnels
A complete guide to DMVPN Phase 2 on Cisco IOS-XE: configure mGRE tunnels, IKEv2 IPsec, NHRP registration, OSPF next-hop preservation, and troubleshoot the most common failure modes including NAT traversal and dual-hub redundancy.