Replacing T640 Packet Forwarding Engine Components; Replacing A T640 Fpc; Removing A T640 Fpc; Figure 115: Removing A T640 Fpc - Juniper T640 Hardware Manual

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Replacing T640 Packet Forwarding Engine Components

Replacing a T640 FPC

Copyright © 2010, Juniper Networks, Inc.
For more information and sample output from these commands, see the Junos OS
System Basics and Services Command Reference.
T640 Chassis Description on page 13
T640 Switch Interface Boards (SIBs) Description on page 30
Maintaining the T640 SIBs on page 158
To replace Packet Forwarding Engine components, perform the following procedures:
Replacing a T640 FPC on page 219
Replacing a T640 PIC on page 225
Replacing T640 PIC Cables on page 230
Replacing a T640 SFP on page 233
Replacing a T640 XENPAK Module on page 235
The FPCs are hot-insertable and hot-removable. When you remove an FPC, the router
continues to function, although the PIC interfaces installed on the FPC being removed
no longer function.
The router holds up to eight FPCs, which are installed vertically in the front of the router.
An empty FPC weighs approximately 25 lb (11.3 kg) and a fully configured FPC can weigh
up to 32 lb (14.5 kg).
Removing a T640 FPC on page 219
1.
Installing a T640 FPC on page 221
2.

Removing a T640 FPC

To remove an FPC (see Figure 115 on page 221):
Have ready a replacement FPC or FPC blank panel and an antistatic mat for the FPC.
1.
Also have ready rubber safety caps for each PIC using an optical interface on the FPC
that you are removing.
Attach an electrostatic discharge (ESD) grounding strap to your bare wrist, and connect
2.
the strap to one of the ESD points on the chassis.
Label the cables connected to each PIC on the FPC so that you can later reconnect
3.
the cables to the correct PICs.
Use one of the following methods to take the FPC offline:
4.
Press and hold the FPC online/offline button. The green OK LED next to the button
begins to blink. Hold the button down until the LED goes out. The LEDs and
online/offline button for each FPC are located directly above it on the craft interface.
Issue the CLI command:
Chapter 17: Replacing T640 Router Hardware Components
219