Verify Control Board Failure - Juniper M Series Monitoring And Troubleshooting Manual

Meaning
Related
Documentation

Verify Control Board Failure

Check the Control Board Connection
Purpose
Action
Check the Control Board Fuses
Purpose
Action
Copyright © 2012, Juniper Networks, Inc.
May 18 16:04:06 CB#1 - Green LED Off
May 18 16:04:06 hwdb: entry for cbd 296 at slot 1 deleted
The database provides the date, time, and a component status message. The
chassisd
database is dynamic. It is initialized at router startup and is updated when
chassisd
components are added or removed. You can search for multiple items in the
log file by using the
| match cb
a Control Board fails or is offline. Use this information to diagnose a Control Board problem
and to let JTAC know what error messages were generated and the router events that
occurred before and after the problem. For more information about system log messages,
see the Junos OS System Log Messages Reference.
Checklist for Monitoring the Control Board on page 381
To verify a Control Board failure:
Check the Control Board Connection on page 393
1.
Check the Control Board Fuses on page 393
2.
Perform a Control Board Swap Test on page 394
3.
Display the Control Board Hardware Information on page 395
4.
5. Locate the Control Board Serial Number ID Label on page 396
To verify Control Board failure by checking the Control Board connection.
To check the Control Board connection, make sure that it is properly seated in the
midplane. Ensure that none of the pins are bent. Check the captive screws on the Control
Board ejector handles.
To verify Control Board failure by checking the Control Board fuses.
The M320 router requires fuses for the Control Board. The fuses for the Control Board,
Switch Interface Boards (SIBs) and Flexible PIC Concentrators (FPCs) are located in the
rear of the midplane behind the power supply in slot
Board blows, the Control Board stops functioning even though it is installed correctly
and the power supplies are providing power to the router.
Figure 216 on page 394 shows the location of the fuses in the rear of the midplane for the
Control Boards. (The labels shown in the figure do not appear on the actual fuses—the
clear cover on every fuse reads BUSS GMT-X—and might not match the labels on the
midplane. Ignore the labels on the midplane.)
command to see error messages that are generated when
PEM0
Chapter 14: Monitoring Control Boards
chassisd
. When the fuse for a Control
393