Juniper Networks EX8208 - Manual (Page 206)

• DC Power Supply in an EX8200 Switch on page 48
• DC Power Supply LEDs in an EX8200 Switch on page 50
Powering On an EX8200 Switch
Before you power on the switch, ensure that:
• You have installed all required switch components.
• You have installed the required number of power supplies to support redundant
operation for the switch configuration (see “Calculating Power Requirements for an
EX8208 Switch” on page 114 or Calculating Power Requirements for an EX8216 Switch).
• You understand how to protect the switch from electrostatic damage. See “Prevention
of Electrostatic Discharge Damage on EX Series Switches” on page 292.
Ensure that you have the following parts and tools available to power on the switch:
• An electrostatic discharge (ESD) grounding strap.
• An external management device such as a PC.
• A cable to connect the external management device to the master Switch Fabric and
Routing Engine (SRE) module's console (CON) port or management (MGMT) port in
an EX8208 switch or the master Routing Engine (RE) module’s console (CON) port
or management (MGMT) port in an EX8216 switch.
For connecting a management device to the console port, see “Connecting an EX Series
Switch to a Management Console” on page 181. For connecting a management device
to the management port, see “Connecting an EX Series Switch to a Network for
Out-of-Band Management” on page 187.
To power on the switch:
1. Attach the ESD grounding strap to your bare wrist and connect the strap to the ESD
point on the chassis.
2. Connect the external management device to the master SRE or master RE module's
management (MGMT) port.
3. Turn on the power to the external management device.
4. Ensure that the power supplies are fully inserted in the chassis and that each of their
handles is flush against the faceplate.
5. Ensure that the source power cord is inserted securely into the appliance inlet for
each AC power supply.
If you are using DC power supplies, ensure that the source power cables are connected
to the appropriate terminal: the positive (+) source cable to the return terminal
(RTN) and the negative (-) source cable to the input terminal (-48 VDC).
6. Switch on the site circuit breakers.
Copyright © 2010, Juniper Networks, Inc. 180
Complete Hardware Guide for EX8208 Ethernet Switches