Juniper J-Series Administration Manual page 44

J-series Services Router Administration Guide
Figure 6: Connecting to the Console Port on the J4350 or J6350 Services Router
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Recovering the Root Password
Turn on the power to the management device.
On the management device, start your asynchronous terminal emulation
application (such as Microsoft Windows Hyperterminal) and select the appropriate
COM port to use (for example,
Configure the port settings as follows:
Bits per second: 9600
Data bits: 8
Parity: None
Stop bits: 1
Flow control: None
Power on the router by pressing the power button on the front panel. Verify that
the POWER LED on the front panel turns green.
The terminal emulation screen on your management device displays the router's
boot sequence.
When the following prompt appears, press the Spacebar to access the router's
bootstrap loader command prompt:
Hit [Enter] to boot immediately, or space bar for command prompt.
Booting [kernel] in 9 seconds...
At the following prompt, enter
ok boot -s
COM1 ).
boot -s to start up the system in single-user mode.