Juniper M Series User Manual

Blue * .
[...Output truncated...]
Meaning The MCS LEDs section of the command output indicates the status of the redundant
MCSs. An asterisk (*) indicates the current operating state: Amber (offline), Green (online),
and Blue (Master).
Check the Redundant MCS LED Status
Purpose To verify the LED status of the redundant MCS.
Action To check redundant MCS LED status, look on the faceplate of the MCS at the rear of the
router. Table 152 on page 680 describes the LED states.
Table 152: MCS LEDs
DescriptionStateLabelColor
MCS is master.On steadilyMASTERBlue
MCS is operating normally.On steadilyOKGreen
MCS is starting up.Blinking
MCS has failed.On steadilyFAILAmber
When the MCS is functioning normally, the green OK LED remains on steadily.
Related
Documentation
Checklist for Monitoring Redundant MCSs on page 675•
Switch MCS Mastership
Purpose To determine MCS mastership and backup.
Action To display which MCS is master and which is backup, do one of the following:
• Check the MCS Environmental Status on page 457
• Check the MCS Status from the Craft Interface on page 458
• Check the MCS LEDs on page 459
To switch the MCS master to backup or the MCS backup to master, take the MCS offline
by pressing the MCS offline button on the component faceplate. The backup MCS will
automatically start up. To remove the MCS, see “Perform a Swap Test on a Redundant
MCS” on page 681.
Related
Documentation
Checklist for Monitoring Redundant MCSs on page 675•
Copyright © 2012, Juniper Networks, Inc.680
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