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This approach has the advantage of protecting the system components, such as line cards and switch

fabric cards, against damage by eliminating the need to store them even temporarily outside their card

cages. It also helps ensure that the physical configuration of the router is maintained, because each

transferred component is installed in the same location in the replacement chassis that it occupied in the

defective chassis.

Before you begin, you should study the router chassis being replaced. Note where all the external cables

are attached and how they are routed to the chassis. If necessary, label the cables so that they can be

reinstalled correctly on the system after the chassis is replaced.

Grounding the Replacement Chassis

When the replacement chassis is near the rack site, temporarily connect the central office grounding

system or interior equipment grounding system to the network equipment building systems (NEBS)

supplemental bonding and grounding receptacle on the router. There are three threaded inserts on the

right side of the chassis near the rear panel. (See

Figure 5

CIS CO 120

GIGA BIT

SERIES

SWIT CH

ROU TER

For more information on the bonding and grounding cable and connector requirements, refer to

Chapter 2 of the Cisco 12006 and Cisco 12406 Router Installation and Configuration Guide.

Removing and Installing the Chassis

Procedures for removing and installing the chassis are described in the following sections:

•

Cisco 12006 and Cisco 12406 Router Chassis Replacement Instructions

NEBS Bonding and Grounding Receptacle

GIGA BIT

ROU TE

PROC ESSO

Preparing the Defective Chassis, page 9

Transferring System Components, page 13

Removing the Defective Chassis, page 25

Installing the Replacement Chassis, page 27

Figure

5.)

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