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Before you leave a lab, save the router configuration from its terminal.
If the terminal loses its connection, wait for the reconnect message.
When the connection returns, check the same device and confirm the saved setting.
Opening another lab in a second tab ends the previous lab session.
Return to My Labs and reopen the lab you want to continue.
Check the topology and the saved configuration before you resume work.
A missing page offers a link back to a familiar part of nuLAB.
If access is denied, use Back to nuLAB to return to the portal.