Re: N600 WNDR3400V3
Welcome to the community!
What do you mean by entering the Nano Station? Are you trying to set it as a wireless repeater of the Netgear router?
If you do, access the admin page of the router and look for Wireless Repeating option under Advanced Setup.
Configuring wireless repeating feature on your router will be the same steps provided on this link.
Let us know if this helps.
NETGEAR Community Team