Figure 10 on page 25 shows the alarm relay contacts in EX9200 switches.
Figure 10: Alarm Relay Contacts in EX9200 Switches
g022029
Craft Interface panel
Alarm
relay
contacts
Related
Documentation
EX9204 Switch Hardware Overview•
• EX9208 Switch Hardware Overview on page 3
• EX9214 Switch Hardware Overview
• Chassis Component Alarm Conditions on EX9200 Switches on page 302
Midplane in an EX9200 Switch
The midplane is located on the rear of the chassis and forms the rear of the card cage.
The Switch Fabric modules (SF modules) and line cards are installed into the midplane
from the front of the chassis, and the power supplies install into the midplane from the
rear of the chassis. The cooling system components also connect to the midplane.
The midplane performs the following major functions:
•
Provides a data path—Data packets are transferred across the midplane between the
line cards through the Switch Fabric on the host subsystem.
•
Distributes power—The power supplies connect to the midplane, which distributes
power to all the switch components.
•
Provides a signal path—The midplane provides the signal path to the line cards, Switch
Fabric, and other system components for monitoring and control of the system.
Figure11 on page 26 shows the midplanein an EX9204 switch. Figure 12 on page26 shows
the midplane in an EX9208 switch. Figure 13 on page 27 showsthe midplane in an EX9214
switch.
25Copyright © 2017, Juniper Networks, Inc.
Chapter 2: Chassis Components and Descriptions
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