Mcs Overview; Figure 246: Mcs Component; Table 116: Checklist For Monitoring The Mcs - Juniper M Series Monitoring And Troubleshooting Manual

M Series and T Series Routers Monitoring and Troubleshooting Guide
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MCS Overview

456
Table 116: Checklist for Monitoring the MCS (continued)
Monitor MCS Tasks
1. Display the MCS Hardware Information
on page 462
2. Locate the MCS Serial Number ID Label
on page 463
"Returning the MCS" on page 463
MCS Overview on page 456
Inspect the MCS to ensure that control and monitoring functions for router components
and SONET/SDH clocking for the router function normally.
The MCS is a component of the host module on M40e and M160 routers. The MCS works
with the Routing Engine to provide control and monitoring functions for router components
and to provide SONET/SDH clocking for the router.

Figure 246: MCS Component

The router can be equipped with up to two MCSs for redundancy. If two MCSs are installed,
one acts as the master MCS and the other acts as a backup. If the master MCS fails or
is removed, the backup MCS restarts and becomes the master MCS.
NOTE: The host modules (
) actually have the master and backup role.
MCS1
Each MCS requires a Routing Engine to be installed in an adjacent slot.
above RE0 , and MCS1 installs below
chassis, it does not function if there is no Routing Engine present in the adjacent slot.
The MCS installs into the midplane from the back of the chassis.
Command or Action
show chassis hardware
Look at the bottom left of the MCS board.
See "Return the Failed Component" on page
working with
RE0 MCS0
RE1 . Even if an MCS is physically installed in the
Copyright © 2012, Juniper Networks, Inc.
116.
and working with
RE1
installs
MCS0