• For information about alarm types and severity levels on the switch, see the DellPowerConnect J-Series Ethernet Switch Complete Software Guide for Junos OS athttp://www.support.dell.com/manuals.Field-Replaceable Units in a J-EX8208 SwitchField-replaceable units (FRUs) are switch components that you can replace at your site.The switch uses these types of FRUs:• Hot-insertable and hot-removable—You can remove and replace these componentswithout powering off the switch or disrupting the switching function.• Hot-pluggable—You can remove and replace these components without powering offthe switch, but the switching function is interrupted until you replace the component.Table 12 on page 21 lists the FRUs for the J-EX8208 switch and their types.Table 12: FRUs in a J-EX8208 SwitchTypeFRUHot-insertable and hot-removable.Power suppliesHot-insertable and hot-removable.Fan trayRedundant configuration:• Master SRE module is hot-pluggable.• Backup SRE module is hot-insertable and hot-removable.Switch Fabric and Routing Engine (SRE) moduleRedundant configuration:• SF module is hot-insertable and hot-removable.Switch Fabric (SF) moduleHot-insertable and hot-removable.We recommend that you take the line cards offline before removing them.See “Removing a Line Card from a J-EX8200 Switch” on page 170.8-port SFP+ line card48-port SFP line card48-port RJ-45 line cardHot-insertable and hot-removable.SFP and SFP+ transceiversNOTE: Line cards are not part of the redundant configuration. You must orderthem separately.RelatedDocumentationInstalling and Removing J-EX8208 Switch Hardware Components on page 113•• Removing an SRE Module from a J-EX8208 Switch on page 167• Removing an SF Module from a J-EX8208 Switch on page 16921Chapter 2: Component Descriptions
