Russian government’s disconnection test

Anyone got any technical info on how Russia plans to execute a
disconnection test of the internet? I am starting to see this
on web sites again:

and started wondering how they plan to do that? DNS? firewalls?
Shut off optics on fiber? Stop satellite comms? What about

"Russia plans to execute a so-called disconnection test of the
internet sometime in October—right ahead of Nov. 1, when a new
law about domestic internet kicks into gear. Russia plans to then
repeat this test at least once a year."

"For one, “equipment is being installed on the networks of
major telecom operators,” Alexander Zharov, head of Roskomnadzor,
told reporters."