Dell PowerConnect J-8208 Hardware Guide - Page 57
Backplane in a J-EX8208 Switch, Switch Fabric and Routing Engine SRE modules, Switch Fabric SF module
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Chapter 2: Component Descriptions Related • Field-Replaceable Units in a J-EX8208 Switch on page 21 Documentation • Installing a Fan Tray in a J-EX8208 Switch on page 116 • Removing a Fan Tray from a J-EX8208 Switch on page 163 Backplane in a J-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: High levels of electrical energy are distributed across the switch backplane. Do not touch the backplane connectors, or any component connected to the backplane, with any metallic object while servicing components installed in the switch. Related • AC Power Supply in a J-EX8200 Switch on page 34 Documentation 41