Help us improve your experience.

Let us know what you think.

Do you have time for a two-minute survey?

 

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.

Note

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

Replacing a T4000 Six-Input DC Power Supply Side Air Filter

Connector Interface Panel (CIP)

Hot-pluggable

Replacing a T4000 CIP

Backup Control Board

Master Control Board (if nonstop active routing is configured)

Hot-removable and hot-insertable

Taking the T4000 Host Subsystem Offline

Replacing a T4000 LCC-CB

Nonredundant Control Boards

Master Control Board (if nonstop active routing is not configured)

Hot-pluggable

Taking the T4000 Host Subsystem Offline

Replacing a T4000 LCC-CB

Craft Interface

Hot-removable and hot-insertable

Replacing a T4000 Craft Interface

Front and rear fan trays

Hot-removable and hot-insertable

Replacing a T4000 Lower Front Fan Tray

Replacing a T4000 Upper Front Fan Tray

Replacing a T4000 Rear Fan Tray

Flexible PIC Concentrators (FPCs)

Hot-removable and hot-insertable

Replacing a T4000 FPC

PICs

Hot-removable and hot-insertable

Replacing a T4000 PIC

Redundant power supplies

Hot-removable and hot-insertable

Replacing a T4000 Six-Input DC Power Supply

Replacing a T4000 DC Power Supply Cable

Nonredundant power supplies

The router must be powered off before replacement.

Replacing a T4000 Six-Input DC Power Supply

Replacing a T4000 DC Power Supply Cable

Nonredundant Routing Engine

Master Routing Engine (if nonstop active routing is not configured)

Hot-pluggable

Taking the T4000 Host Subsystem Offline

Replacing a T4000 Routing Engine

Backup Routing Engine

Master Routing Engine (if nonstop active routing is configured)

Hot-removable and Hot-insertable

Taking the T4000 Host Subsystem Offline

Replacing a T4000 Routing Engine

DIMM Module in a Routing Engine

The Routing Engine is removed.

Replacing a DIMM Module in a T4000 RE-C1800 Routing Engine

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

Replacing a T4000 SCG

Master SONET Clock Generator (SCG)

Nonredundant SONET Clock Generator (SCG)

Hot-pluggable

Replacing a T4000 SCG

Switch Interface Boards (SIBs)

Hot-removable and hot-insertable

Replacing a T4000-SIB

Replacing a T4000 TXP-LCC-3D SIB