Table 152: Mcs Leds; Check The Redundant Mcs Led Status; Switch Mcs Mastership - Juniper M Series Monitoring And Troubleshooting Manual

M Series and T Series Routers Monitoring and Troubleshooting Guide
Meaning

Check the Redundant MCS LED Status

Purpose
Action
Related
Documentation

Switch MCS Mastership

Purpose
Action
Related
Documentation
680
Blue * .
[...Output truncated...]
The section of the command output indicates the status of the redundant
MCS LEDs
MCSs. An asterisk (*) indicates the current operating state:
and Blue (Master).
To verify the LED status of the redundant MCS.
To check redundant MCS LED status, look on the faceplate of the MCS at the rear of the
router. Table 152 on page 680

Table 152: MCS LEDs

Color Label
Blue
MASTER
Green
OK
Amber FAIL
When the MCS is functioning normally, the green
Checklist for Monitoring Redundant MCSs on page 675
To determine MCS mastership and backup.
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
MCS" on page 681.
Checklist for Monitoring Redundant MCSs on page 675
describes the LED states.
State Description
On steadily MCS is master.
On steadily MCS is operating normally.
Blinking MCS is starting up.
On steadily MCS has failed.
LED remains on steadily.
OK
"Perform a Swap Test on a Redundant
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