T4000 Field-Replaceable Units
Field-replaceable units (FRUs) are router components that can be replaced at the customer site. Replacing most FRUs requires minimal router downtime.
Hot-removable and hot-insertable FRUs—You can remove and replace these components without powering off the router or disrupting the routing functions.
Hot-pluggable FRUs—You can remove and replace these components without powering down the router, but the routing functions of the system are interrupted when the component is removed.
Other FRUs require that you power off the router or backup Routing Engine.
Before you remove a Control Board or Routing Engine, you must take the host subsystem offline.
Table 1 lists the replaceable FRUs for the router.
Table 1: Field-Replaceable Units
Component | Effect of Replacement | For More Information |
---|---|---|
Air filters | Hot-removable and hot-insertable | Replacing a T4000 Front Air Filter Replacing a T4000 Rear Air Filter Replacing a T4000 Six-Input DC Power Supply Front Air Filter |
Connector Interface Panel (CIP) | Hot-pluggable | |
Backup Control Board Master Control Board (if nonstop active routing is configured) | Hot-removable and hot-insertable | |
Nonredundant Control Boards Master Control Board (if nonstop active routing is not configured) | Hot-pluggable | |
Craft Interface | Hot-removable and hot-insertable | |
Front and rear fan trays | Hot-removable and hot-insertable | Replacing a T4000 Lower Front Fan Tray |
Flexible PIC Concentrators (FPCs) | Hot-removable and hot-insertable | |
PICs | Hot-removable and hot-insertable | |
Redundant power supplies | Hot-removable and hot-insertable | |
Nonredundant power supplies | The router must be powered off before replacement. | |
Nonredundant Routing Engine Master Routing Engine (if nonstop active routing is not configured) | Hot-pluggable | |
Backup Routing Engine Master Routing Engine (if nonstop active routing is configured) | Hot-removable and Hot-insertable | |
DIMM Module in a Routing Engine | The Routing Engine is removed. | |
CompactFlash card and SSD in a Routing Engine | Power off the Routing Engine. | Replacing a CompactFlash Card in a T4000 RE-C1800 Routing Engine Replacing a Solid-State Disk in a T4000 RE-C1800 Routing Engine |
Backup SONET Clock Generator (SCG) | Hot-removable and hot-insertable | |
Master SONET Clock Generator (SCG) Nonredundant SONET Clock Generator (SCG) | Hot-pluggable | |
Switch Interface Boards (SIBs) | Hot-removable and hot-insertable |