5.0 V 5001 mV
12.0 V 11946 mV
3.3 V bias 3274 mV
8.0 V bias 7562 mV
GBUS Revision 40
FPGA Revision 7
Meaning The command output displays which Control Board is master and standby. Additionally,
the command output displays the Control Board state, redundancy status, temperature,
power source, and circuitry revision level for each Control Board installed in the router
chassis. CB1 is shown in standby mode, and is the redundant Control Board.
To display the environmental status of a particular Control Board, use the following
command:
t640@host> show chassis environment cb slot
Check the Redundant Control Board Status from the Craft Interface
Purpose To obtain the status of the redundant Control Board.
Action If you are near the router, physically look at the craft interface for the Control Board LEDs.
To display redundant Control Board status from the craft interface, use the following
command:
user@host> show chassis craft-interface
Sample Output
t640@host> show chassis craft-interface
FPM Display contents:
[...Output truncated...}
CB LEDs:
CB 0 1
--------------
Amber .
Green *
Blue *
[...Output truncated...]
Meaning The CB LEDs section of the command output indicates the status of the redundant Control
Board. An asterisk (*) indicates the current operating state: Amber (offline), Green (online),
and Blue (Master). In the above output, no redundant Control Board is installed—the
output under CB1 is blank.
Check the Redundant Control Board LED Status
Purpose To check the LED status of the redundant Control Board.
Action To check the redundant Control Board LED status, look at the three LEDs located on the
Control Board faceplate.Table 150 on page 672 describes the Control Board LED states.
671Copyright © 2012, Juniper Networks, Inc.
Chapter 34: Monitoring Redundant Control Boards
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