Cisco uses your network credentials to login to Box. Continue to login to Box through your network.
If you are not a part of Cisco, continue to log in with your Box.com account.
If you do not have a Cisco managed Box account click here for more info while connected to the Cisco internal network.
If you have log in issues:
Cisco Employees: Open a support case.
Non-Cisco Employees: email box-support@cisco.com.