Maintaining the T1600 Host Subsystem
The host subsystem comprises a Routing Engine and up to two adjacent control boards functioning together.
To maintain the host subsystem, check the host subsystem LEDs (HOST0 and HOST1) on the craft interface. If the red HOST0 FAIL or HOST1 FAIL LED is lit, look at the LCD to get more information about the cause of the problem. For more information about the LEDs and the display, see T1600 Craft Interface Description
To maintain the Routing Engines and control boards:
Maintaining the T1600 Routing Engines
Purpose
For optimum router performance, verify the condition of the routing engines and the control boards.
Action
On a regular basis:
- Check the host subsystem LEDs on the craft interface. For more information about the LEDs and the display, see T1600 Craft Interface Description.
- Check the LCD on the craft interface to view information about the router temperature and the status of the Routing Engines.
- Issue the show chassis routing-engine command
to check the status of the Routing Engines. The output is similar
to the following:
user@host> show chassis routing-engineRouting Engine status: Slot 0: Current state Master Election priority Master (default) Temperature 34 degrees C / 93 degrees F DRAM 2048 Mbytes CPU utilization: User 0 percent Background 0 percent Kernel 1 percent Interrupt 0 percent Idle 99 percent Start time 2002-01-22 05:21:31 UTC Uptime 10 days, 16 hours, 4 minutes, 52 seconds Load averages: 1 minute 5 minute 15 minute 0.00 0.00 0.00 Routing Engine status: Slot 1: Current state Empty
For further description of the output from the commands, see the Junos System Basics and Services Command Reference.
Maintaining the T1600 Control Boards
Purpose
For optimum router performance, verify the condition of the control boards.
Action
On a regular basis:
- Check the LEDs on the control board faceplate.
- Issue the show chassis environment cb command
to check the status of the T-CBs. The output is similar
to the following:
user@host> show chassis environment cbCB 0 status: State Online Master Temperature 29 degrees C / 84 degrees F Power: 1.8 V 1809 mV 2.5 V 2496 mV 3.3 V 3295 mV 4.6 V 4687 mV 5.0 V 5042 mV 12.0 V 11985 mV 3.3 V bias 3277 mV 8.0 V bias 7472 mV GBUS Revision 40 FPGA Revision 7
For further description of the output from the commands, see the Junos System Basics and Services Command Reference.
