Craft Interface In An Ex9200 Switch; Figure 7: Craft Interface In An Ex9204 Switch - Juniper EX9214 Hardware Manual

EX9214 Switch Hardware Guide
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Craft Interface in an EX9200 Switch

20
provide full redundancy. If a power supply in a redundant configuration is removed or
fails, its redundant power supply takes over without interruption. The power supply in
serves as redundant power supply to the power supply in slot
PEM2
power supply in serves as redundant power supply to the power supply in slot
PEM3
PEM1 . See "DC Power Supply in an EX9214 Switch" on page
Cooling system—The cooling system in an EX9214 switch consists of two fan trays and
one air filter. Each fan tray contains six fans. Under normal operating conditions, the
fans in the fan trays run at less than full speed. If one of the fans fails, the host
subsystem increases the speed of the remaining fans to provide sufficient cooling for
the switch indefinitely. See
page 37.
Routing Engine Module in an EX9200 Switch on page 27
Switch Fabric Module in an EX9200 Switch on page 29
The craft interface enables you to view status and troubleshooting information at a
glance and to perform many system control functions. The craft interface is located on
the front panel of the switch. It contains LEDs and on and off buttons for switch
components, the alarm relay contacts, and an alarm cutoff button.
Figure 7 on page 20 shows the craft interface in an EX9204 switch.
shows the craft interface in an EX9208
interface in an EX9214 switch.

Figure 7: Craft Interface in an EX9204 Switch

1
1— Host subsystem LEDs
2— Fan LEDs
3— Power supply LEDs
4— Minor alarm LED
NOTE: You can install a line card or an SF module in the multifunctional slot
labeled in EX9204 switches. The corresponding LED displays information
1|0
depending on the hardware installed in that slot.
"Cooling System and Airflow in an EX9214 Switch" on
switch.Figure 9 on page 21
2
3
8
5— Major alarm LED
6— Alarm cutoff/lamp test button
7— Alarm relay contacts
8— LEDs and control buttons for Switch Fabric
and Line cards
and the
PEM0
43.
Figure 8 on page 21
shows the craft
7
4 5
6
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