1. Logging into the Switch At the login prompt, enter “juniper”. At the password prompt enter “juniper1” Amnesiac (ttyu0) login: juniper Password: --- JUNOS 9.0R2.10 built 2008-03-06 10:31:45 UTC juniper> 2. Configuration Mode...
http://www.ebrahma.com/2013/09/ex-series-switch-basic-configuration-in-16-steps/