Monitoring Redundant Scgs; Checklist For Monitoring The Redundant Scg - Juniper M Series Monitoring And Troubleshooting Manual

CHAPTER 33

Monitoring Redundant SCGs

Checklist for Monitoring the Redundant SCG

Purpose
Action
Copyright © 2012, Juniper Networks, Inc.
Checklist for Monitoring the Redundant SCG on page 657
Redundant SCGs Overview on page 658
Display Redundant SCG Hardware Information on page 659
Monitor Redundant SCG Status on page 660
Display Redundant SCG Mastership on page 662
Perform a Swap Test on a Redundant SCG on page 663
Return the SCG on page 664
You monitor and maintain redundant SONET Clock Generators (SCGs) installed in the
T320 router and the T640 router to ensure that there is no interruption of function. SCGs
provide a clock signal for SONET/SDH, and select a clock signal from any Flexible PIC
Concentrator (FPC), or from the external clock inputs.
Table 147 on page 657 lists the tasks you perform to monitor redundant SCGs.
Table 147: Checklist for Monitoring the Redundant SCG
Monitor SCG Tasks
"Display Redundant SCG Hardware
Information" on page 659
"Monitor Redundant SCG Status" on page 660
1. Monitor the Redundant SCG Environmental
Status on page 660
2. Display the Redundant SCG LED States at
the Command Line on page 661
3. View the Redundant SCG LEDs on page 661
"Display Redundant SCG Mastership" on page 662
Command or Action
show chassis hardware
show chassis environment
show chassis environment scg
show chassis craft-interface
Remove the rear component cover and look on
the SCG faceplate at the back of the T320
router, T640 router, or T1600 router chassis.
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