Juniper M Series User Manual

Table 150: Control Board LEDs
DescriptionStateColorLabel
Control Board is online and is
functioning normally.
On steadilyGreenOK
Control Board has failed.On steadilyAmberFAIL
Control Board is functioning as master.On steadilyBlueMASTER
Related
Documentation
Checklist for Monitoring Redundant Control Boards on page 665•
Switch Control Board Mastership
To switch the Control Board master to backup or the Control Board backup to master,
take the Control Board offline by pressing the Control Board offline button on the
component faceplate. The backup Control Board will automatically start up. To remove
the Control Board, see “Replace a Control Board” on page 672.
Related
Documentation
Checklist for Monitoring Redundant Control Boards on page 665•
Check the Control Board Alarms
Purpose To determine the details of the Control Board alarms.
Action To check for the Control Board alarms, see “Checking the Control Board Alarms” on
page 390. For conditions that trigger Control Board alarms, see “Display the Current Router
Alarms” on page 67.
Related
Documentation
Checklist for Monitoring Redundant Control Boards on page 665•
Replace a Control Board
The Control Board can fail and not start, or it can cause a connectivity problem between
the Routing Engine and the Packet Forwarding Engine components. You can perform a
swap test on the Control Board to try to pinpoint the problem.
To replace a Control Board, see “Perform a Control Board Swap Test” on page 394.
CAUTION: Before performing a swap test, always check for bent pins in the
midplane and check the Control Board for stuck pins in the connector. Pins
stuck in the component connector can damage other good slots during a
swap test.
Copyright © 2012, Juniper Networks, Inc.672
M Series and T Series Routers Monitoring and Troubleshooting Guide

Juniper M Series Specifications

General

Brand	Juniper
Model	M Series
Category	Network Router
Language	English