CHAPTER 33
Monitoring Redundant SCGs
•
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
Checklist for Monitoring the Redundant SCG
Purpose 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.
Action Table 147: Checklist for Monitoring the Redundant SCG
Command or ActionMonitor SCG Tasks
show chassis hardware
“Display Redundant SCG Hardware
Information” on page 659
“Monitor Redundant SCG Status” on page 660
show chassis environment
show chassis environment scg
1. Monitor the Redundant SCG Environmental
Status on page 660
show chassis craft-interface2. Display the Redundant SCG LED States at
the Command Line on page 661
Remove the rear component cover and look on
the SCG faceplate at the back of the T320
router, T640 router, or T1600 router chassis.
3. View the Redundant SCG LEDs on page 661
“Display Redundant SCG Mastership” on page 662
657Copyright © 2012, Juniper Networks, Inc.
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