EdgeConnect Tunnel Estimation Tool

The EdgeConnect Tunnel Estimation Tool helps you plan the total number of tunnels that will be created in your SD-WAN network based on a set of defined parameters.

To calculate the estimated number of tunnels needed for your SD-WAN network, please fill in the details in the "Network Parameters" section below. On the left, you will find the estimated tunnel count per hub under the “Hub Tunnel Estimate” output, and the estimated tunnel count per spoke under the “Spoke Tunnel Estimate” output.

📔 Please note that this tool is intended for estimation and planning purposes only. The actual tunnel count per gateway may vary slightly based on the network configuration at each site (e.g., sites with 3 WAN interfaces will have more tunnels than sites with 2 WAN interfaces).

Network Parameters

Hub Gateways - This represents the total number of "Hub" gateway devices you plan to include in your SD-WAN deployment.

Spoke Gateways - This indicates the total number of "Spoke" gateway devices you intend to deploy in your SD-WAN setup. For instance, if you plan to have 250 "Spoke" sites, each running with EdgeHA pairs, this would amount to 500 gateways.

WAN Labels per Hub - This is the average number of WAN labels you expect each hub gateway to have for constructing SD-WAN fabric tunnels.

WAN Labels per Spoke - This is the average number of WAN labels you anticipate each spoke gateway to have for building SD-WAN fabric tunnels.

Hub and Spoke Overlays - This refers to the number of Business Intent Overlays you expect when using a Hub and Spoke Topology.

Mesh Overlays - This denotes the number of Business Intent Overlays you anticipate when using a Mesh Topology.

Enable Cross-Connect - When enabled, all labels are considered to be part of the same cross-connect group.

SSE Services - This is the number of planned SSE Services for the SD-WAN fabric. It calculates the number of pass-through tunnels based on a primary and secondary tunnel being built per label. It is assumed that the SSE service will be applied to all gateways, regardless of whether they are designated as hub or spoke.

❗If the per hub tunnel total is more than 10,000, the output will be highlighted in RED to indicate that the number of tunnels likely exceeds the Hub gateway capacity, and you would need to adjust your configuration. This is based on the assumption that all "Hub" gateways will be capable of supporting up-to 10,000 tunnels.

❗If the per spoke tunnel total is more than 5,000, the output will be highlighted in RED to indicate that the number of tunnels likely exceeds the Spoke gateway capacity, and you would need to adjust your configuration. This is based on the assumption that all "Spoke" gateways will be capable of supporting up-to 5,000 tunnels.

EdgeConnect SD-WAN gateway models support a large number of tunnels, though the maximum number varies slightly between different models. The table below lists the maximum supported tunnel count for each model.