Juniper M Series User Manual

“Checklist for Monitoring the Control Board” on page 381.
Table 149 on page 666 provides a checklist of tasks you perform to monitor redundant
Control Boards.
Action Table 149: Checklist for Monitoring Redundant Control Boards
Command or ActionMonitor Redundant Control Board Tasks
show chassis hardware
“Display Redundant Control Board
Hardware Information” on page 669
“Display Redundant Control Board Mastership” on page 670
show chassis environment cb1. Check the Redundant Control Board
Environmental Status on page 670
show chassis craft-interface2. Check the Redundant Control Board Status
from the Craft Interface on page 671
Examine the LEDs on the Control Board
faceplate.
3. Check the Redundant Control Board LED
Status on page 671
Press the Control Board offline button on the
component faceplate.
“Switch Control Board Mastership” on
page 672
For conditions that trigger Control Board alarms,
see “Display the Current Router Alarms” on
page 67.
“Check the Control Board Alarms” on
page 672
1. Determine whether the host subsystem is
functioning as master or as backup by using
the show chassis routing-engine command.
2. Take the host subsystem offline if the Control
Board is master by using the request chassis
routing-engine master switch command.
3. Replace the Control Board with a known
working one.
4. Check the Control Board status by examining
the LEDs on the Control Board faceplate, or
by using the show chassis hardware
command.
“Replace a Control Board” on page 672
Locate the Control Board serial number ID label.
See “Return the Failed Component” on page 116
or the appropriate hardware guide.
“Return the Control Board” on page 673
Related
Documentation
Redundant Control Boards Overview on page 666•
Redundant Control Boards Overview
Inspect redundant Control Boards to ensure that router component functions are
uninterrupted. Each Control Board works with an adjacent Routing Engine to provide
Copyright © 2012, Juniper Networks, Inc.666
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