Replacing A Ptx5000 Centralized Clock Generator; Removing A Centralized Clock Generator - Juniper PTX5000 Hardware Manual

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For optimum performance, verify the condition of the CCGs.

On a regular basis:

• Check the CCG LEDs. For more information, see

During normal operations:

• The green OK LED on the CCG faceplate is lit.

• The yellow FAIL LED on the CCG faceplate is not lit.

• Issue the show chassis environment ccg command to display information about the CCGs.

Replacing a PTX5000 Centralized Clock Generator

IN THIS SECTION

Installing a Centralized Clock Generator | 317

Removing a Centralized Clock Generator

The PTX5000 can have one or two CCGs installed. The CCGs are located in the upper rear of the

chassis, above the Control Boards and Routing Engines. Each CCG weighs approximately 1.9 lb (0.9 kg).

A nonredundant CCG is hot-pluggable. For redundant CCGs, the primary CCG is hot-pluggable. The

backup CCG is hot-removable and hot-insertable if the primary CCG is functioning. Removing the

"PTX5000 Centralized Clock Generator LEDs" on

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