Configure the tunnel mode.

To use the EVPN Interconnection Solution, set the tunnel mode to EVPN. By default, iMaster NCE-Campus uses the IPSecVPN tunnel mode.

Set the tunnel mode to EVPN. For details, see Configuring the Tunnel Mode.

Configure global parameters.

Configure physical and virtual network parameters for WAN-side network interconnection. For details about the global parameter planning, see Data Planning and Design.

For details, see Setting Global Parameters.

1. Configure the physical network.
   1. Configure a transport network. Define a unified transport network type for communication between sites on the entire network.
   2. (Optional) Set IPSec encryption parameters. (Optional) If an IPSec tunnel needs to be encrypted, you need to configure the encryption mode and algorithm for the IPSec tunnel.
   3. Perform device activation security configuration. For email-based deployment, you need to configure the encryption key and token validity period.
   4. (Optional) Set link connectivity detection parameters. To check the link connectivity of a site, set the link connectivity detection parameters.
   5. (Optional) Set the global parameters for traffic steering policies. Exercise caution when you set the global parameters for traffic steering policies because they affect the real-time route selection of the intelligent traffic steering policy. You are advised to modify these parameters when no service traffic is transmitted.
2. Configure the virtual network.
   1. Configure an AS number for BGP routes.
   2. Configure an address pool.
   3. (Optional) Configure the DNS server group and IP address.

Create sites and add devices to the sites.

Create a site, add devices, and set device roles as planned.

1. Creating a Site
2. Adding Devices

Configure the underlay network.

Configure ZTP. In the EVPN Interconnection Solution, you need to configure WAN links and activate sites before site deployment. For details about the planning of the WAN link template and parameters, see Site WAN Model.

1. Set the WAN link template for the site by referring to (Optional) Configuring a WAN-side Site Template.
2. Set ZTP deployment parameters for CPEs by referring to Configuring the Network Access Mode for a Site.
3. Set NTP parameters for the site by referring to Configuring Time Synchronization for a Site.
4. Configure the template for sending emails during deployment by referring to (Optional) Configuring an Email Template.
5. Choose Zero Touch Provision > ZTP and click Send Email or Download ZTP File to activate the site.

Configure WAN interfaces and underlay WAN routes.

For details about WAN interface planning, see WAN interface attributes in Site WAN Model.

For details about WAN route planning for the underlay, see Data Planning and Design.

For details, see Configuring the Underlay Network.

1. (Optional) Configure the WAN interface.
2. Configure WAN routes for the underlay.

Connect to the RR.

Associate the edge site with an RR site based on the planned network model.

For details, see Associating an Edge Site with an RR Site.

Configure the overlay network.

Create a VN. If services of multiple departments of an enterprise need to be isolated from each other, multiple overlay networks for EVPN interconnection need to be constructed through VNs.

Create a management VN by referring to Creating VNs in LAN-WAN Interconnection Scenario.

Configure WAN services. Provision VN channels for interconnection between sites based on the egress gateway.

For details about overlay network planning, see Overlay topology in Data Planning and Design.

For details about overlay WAN route planning, see Overlay WAN route in Data Planning and Design.

For details, see Configuring WAN Services.

1. Configure the overlay network topology.
2. (Optional) Configure WAN routes for the overlay.

(Optional) Configure LAN services. Wired and wireless users are authenticated based on the core, aggregation, and access devices. LAN-side services can also be configured on a per-site basis. The configuration method is the same as that for a single campus network.

For details, see Configuring LAN Services.

Configure LAN-WAN interconnection. Configure interfaces and routes between the LAN-side border gateway and egress gateway to implement interconnection between LAN and WAN services.

For details about interconnection interface planning, see Data Planning and Design.

For details about overlay LAN route planning, see Overlay LAN route in Data Planning and Design.

For details, see Configuring LAN-WAN Interconnection.

1. Configure LAN-WAN interconnection interfaces.
2. Configure LAN-side routes for the overlay.
3. (Optional) Configure the WLAN function for the gateway.