Backplane In An Ex8208 Switch - Juniper EX8208 Hardware Manual

Table 13: LCD Panel Menu Options for the EX8200 Switch (continued)
Menu Description
If you do not want users to use Maintenance menu options, disable the entire menu or individual
menu options. See
You can view the information about the LCD panel in EX8200 switches by executing the command show
chassis hardware. It shows the version, part number, serial number, and description of the LCD panel.
SEE ALSO
Chassis Status LEDs in an EX8200 Switch
Connecting and Configuring an EX Series Switch (CLI Procedure) | 194
Connecting and Configuring an EX Series Switch (J-Web Procedure) | 198

Backplane in an EX8208 Switch

The backplane is a printed circuit board that forms the back of the line card cage. The Switch Fabric and
Routing Engine (SRE) modules, Switch Fabric (SF) module, power supplies, and line cards plug into the
backplane from the front of the chassis. The backplane contains an EEPROM that stores the serial number
and revision level of the backplane.
The backplane performs the following functions:
Power distribution—The backplane distributes power to all the switch components from the power
supplies that plug into it.
Control-signal connectivity—The backplane transports the control signals exchanged by system
components for monitoring, control, and management purposes.
Transfer of data between line cards and SRE modules—The backplane provides connectivity for data
traffic to and from the line cards and the SRE modules.
WARNING:
Do not touch the backplane connectors, or any component connected to the backplane,
with any metallic object while servicing components installed in the switch.
"Configuring the LCD Panel on EX Series Switches (CLI Procedure)" on page
High levels of electrical energy are distributed across the switch backplane.
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202.