DMVPN
Dynamic Multipoint Virtual Private Network (DMVPN) is a routing technique we can use to build a VPN network with multiple sites without having to statically configure all devices. It’s a “hub and spoke” network where the spokes will be able to communicate with each other directly without having to go through the hub. Encryption is supported through IPsec which makes DMVPN a popular choice for connecting different sites using regular Internet connections. It’s a great backup or alternative to private networks like MPLS.
DMVPN relies on the following technologies to operate:
- Multipoint GRE
- NHRP (Next Hop Resolution Protocol)
- Routing (RIP, EIGRP, OSPF, BGP, etc.)
- IPsec (optional but recommended)
Links:
https://networklessons.com/cisco/ccie-enterprise-infrastructure/introduction-to-dmvpn
Links to this page:
- BGP - eBGP next hop optimization
- BGP - multipath in a DMVPN environment
- DMVPN - IPsec encryption order of operations
- DMVPN - NHRP purge request
- DMVPN - NHRP session attributes
- DMVPN - OSPF and multiple areas
- DMVPN - Phase 2 BGP peerings
- DMVPN - Phase 2 EIGRP neighbor adjacencies
- DMVPN - Phase 2 OSPF neighbor adjacencies
- DMVPN - Phase 2 and multicast traffic
- DMVPN - Phase 2 and summarization
- DMVPN - Using the GRE tunnel key
- DMVPN - What is the best routing protocol to use
- DMVPN - mappings on hub and spokes
- DMVPN - multicast commands
- DMVPN - nhrp map and nhs command syntax
- DMVPN - spoke redundancy
- DMVPN - using a default route
- DMVPN State of a tunnel
- DMVPN dual hub dual cloud
- DMVPN dual hub single cloud
- DMVPN hierarchical topology
- DMVPN redundancy options
- DMVPN with more than two hubs
- EIGRP - stub site function
- FlexVPN redundant hub with dual cloud
- GRE tunnels and how they transmit multicast packets
- GRE
- NHRP - Authentication
- NHRP - Destination Protocol Address
- NHRP - resolution redirect from hub
- NHRP
- OSPF - Advertising point to multipoint networks
- OSPF - point-to-multipoint network type
- SD-WAN - vEdge full mesh
- SD-WAN - vSmart
- VPN
- WAN - how to choose a WAN technology