Juniper Networks M10i Benutzerhandbuch

PICs are hot-removable and hot-insertable. A removed PIC no longer receives or
transmits data, and removing or inserting a PIC briefly interrupts forwarding of traffic
through the remaining PICs.

To replace a PIC, perform the following procedures:

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1.

Place an electrostatic bag or antistatic mat on a flat, stable surface to receive the
PIC. If the PIC connects to fiber-optic cable, have ready a rubber safety cap for
each transceiver and cable.

2.

Attach an electrostatic discharge (ESD) grounding strap to your bare wrist and
connect the strap to one of the ESD points on the chassis. Make sure the router
is attached to a proper earth ground. For more information about ESD, see

3.

If the PIC has multiple cable connector ports, label the cable connected to each
port, to make it easier to reconnect the cables correctly.

4.

Use one of the following methods to take the PIC offline:

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Press and hold the PIC offline button until its failure indicator LED lights,
which usually takes about 5 seconds. The failure LED is usually red; for more
information, see the M10i Internet Router PIC Guide. The offline button for
each PIC is located on the HCM and is labeled with the PIC slot number. The
PICs in FPC 

0

 are located on the upper HCM, and the PICs installed in FPC

1

 are located on the lower HCM.

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Issue the following CLI command:

user@host>request chassis pic fpc-slot fpc-slot pic-slot pic-slot offline

For more information about the command, see the JUNOS System Basics and
Services Command Reference.

5.

Disconnect the cables from the PIC. If the PIC uses fiber-optic cable, immediately
cover each transceiver and the end of each cable with a rubber safety cap.

WARNING: Do not look directly into the ends of fiber-optic cables or into the
transceivers on the interface faceplate. Single-mode fiber-optic cable and the interfaces

Replacing a PIC

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97

Chapter 13: Replacing Hardware Components