This enables dynamic discovery of tunnel endpoints. Securing the VPN with crypto profiles makes it unnecessary to define static crypto maps. The use of multipoint GRE (mGRE) enables a single physical interface on the hub router to support tunnel connections from multiple spoke routers, thus providing the scalability required to connect many locations over VPN to a single hub, such as at a headquarters site. It enables dynamic deployment of IPsec VPNs and improves network performance by reducing latency and jitter, while optimizing head office bandwidth utilization.ĭMVPN combines GRE tunnels, IPsec encryption, and Next Hop Resolution Protocol (NHRP) routing. The centralized architecture involves designating one or more routers as multipoint GRE hub routers that are used to connect spoke, or branch, routers to VPN services.Ĭisco DMVPN allows branch locations to communicate directly with each other over the public WAN or i nternet, such as when using voice over IP ( VoIP ) between two branch offices, B ut it does n o t require a permanent VPN connection between sites. Cisco DMVPN uses a centralized architecture to provide easier implementation and management for deployments that require granular access controls for diverse user communities, including mobile workers, telecommuters, and extranet users. You will implement a DMVPN Phase 1 hub-to-spoke topology.ĭMVPN is a Cisco IOS Software solution for building scalable IPsec Virtual Private Networks (VPNs). In this lab you will create a Dynamic Multipoint Virtual Private Network (DMVPN) that consists of a hub router with two spokes. Part 3: Configure EIGRP Routing for the Tunnel Networks Background / Scenario Part 2: Configure and Verify DMVPN Phase 1 Part 1: Build the Network and Configure Basic Device Settings
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