Does waking up the thread network take as long as restarting it

[suc1]

Hi community,

We are going to develop a large-scale Thread network with the goal of minimizing power consumption as much as possible.

One design is to have the Border Router & Leader always stay awake, while other Routers and End Devices enter sleep mode.
When a message needs to be sent, the upper-layer software calculates the path, wakes up the Routers and End Devices on the path, then sends the message.

The question is, does waking up the network take as long as restarting it?

For example:
Espressif Large-Scale Thread Network Performance Demonstration Based on ESP Thread SoCs
It gives a figure: a 40-node network takes 30 seconds to form.
In a network with 300 nodes, if only 40 nodes will be woken up, does it still take 30 seconds to form the network?

Thank you very much

[jwhui]

Thread does not currently save routing information across reboots. As a result, it will require establishing a new topology after reboot.