DMVPN configuration

Introduction

Dynamic Multipoint VPN (DMVPN) is a dynamic tunneling form of a virtual private network (VPN) supported on Cisco routers. This article contains step-by-step instructions on how to configure DMVPN between a "Hub" and two "Spokes" using RUT9xx routers.

Prerequisites and overview

You will need:

• At least two RUT9xx routers
• A PC to configure the routers

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Configuration scheme:

Spoke configuration

This section contains information on how to configure DMVPN Spokes. Particularly,

Spoke configuration: DMVPN

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Navigate to the Services → VPN → DMVPN page and follow the instructions provided below.

Step 1: create a new DMVPN instance:

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Step 2: configure DMVPN parameters:

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Step 3: configure GRE parameters:

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Step 4: configure IPsec parameters:

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Step 5: configure NHRP parameters or leave default values:

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Step 6: save changes

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Repeat this on different routers as many times as the number of Spokes that you need. Remember that other Spokes will have different LAN, WAN and GRE IP addresses.

Spoke configuration: BGP

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Navigate to the Network → Routing → Dynamic Routes → BGP Protocol page and follow the instructions provided below.

Step 1: enable BGP:

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Step 2: configure BGP instance:

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Step 3: configure BGP peer:

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Step 4: save changes

Hub configuration

Hub configuration: DMVPN

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Navigate to the Services → VPN → DMVPN page and follow the instructions provided below.

Step 1: create a new DMVPN instance:

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Step 2: configure DMVPN parameters:

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Step 3: configure GRE parameters:

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Step 4: configure IPsec parameters:

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Step 5: configure NHRP parameters or leave default values:

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Step 6: save changes

Hub configuration: BGP

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Navigate to the Network → Routing → Dynamic Routes → BGP Protocol page and follow the instructions provided below.

Step 1: enable BGP:

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Step 2: configure BGP instance:

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Step 3: configure BGP peer group:

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Step 4: save changes