Determine Scg Mastership; Display The Scg Master From The Craft Interface Output; Check The Scg Led States For Scg Mastership On The Faceplate - Juniper M Series Monitoring And Troubleshooting Manual

M Series and T Series Routers Monitoring and Troubleshooting Guide
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Determine SCG Mastership

Display the SCG Master from the Craft Interface Output

Purpose
Action
Sample Output
Meaning

Check the SCG LED States for SCG Mastership on the Faceplate

Purpose
406
Table 106: SCG LEDs (continued)
Label Color
Amber
FAIL
Blue
MASTER
Checklist for Monitoring the SCG on page 401
If both SCGs are installed and functioning normally,
Removing the backup SCG does not affect the functioning of the router. Taking the master
SCG offline might result in a brief loss of SONET clock lock while the backup SCG becomes
master.
To determine which SCG is operating as the master:
Display the SCG Master from the Craft Interface Output on page 406
1.
2. Check the SCG LED States for SCG Mastership on the Faceplate on page 406
To determine the SCG master from the craft interface output.
To determine the SCG master from the craft interface status information, use the following
command:
user@host> show chassis craft-interface
user@host> show chassis craft-interface
[...Output truncated...]
SCG LEDs:
SCG 0 1
--------------
Amber . .
Green * *
Blue * .
[...Output truncated...]
The command output displays the status of SCGs. Asterisks (*) indicate the operation
status. The color represents the possible SCG operating states:
and (Master). The SCG in slot 0 is operating as master; the SCG in slot 1 is the backup.
Blue
To check the SCG LED states for SCG mastership on the faceplate.
State Description
On steadily SCG has failed.
On steadily SCG is functioning as master.
SCG0 is master and
Copyright © 2012, Juniper Networks, Inc.
SCG1 is backup.
(Fail), (OK),
Amber Green