Replacing Mx2020 Host Subsystem Components; Effect Of Taking The Mx2020 Host Subsystem Offline; Figure 101: Installing The Psm Air Filter - Juniper MX2020 Hardware Manual

MX2020 3D Universal Edge Router Hardware Guide
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Replacing MX2020 Host Subsystem Components

Effect of Taking the MX2020 Host Subsystem Offline

228

Figure 101: Installing the PSM Air Filter

Preventing Electrostatic Discharge Damage to an MX2020 Router on page 320
Removing the MX2020 Air Filter on page 222
Maintaining the MX2020 Air Filter on page 151
Effect of Taking the MX2020 Host Subsystem Offline on page 228
Taking an MX2020 Host Subsystem Offline on page 230
The host subsystem is taken offline and brought online as a unit. Before you replace a
Control Board and Routing Engine (CB-RE) , you must take the host subsystem offline.
The host subsystem is hot-pluggable.
Normally, if two host subsystems are installed in the router, one CB-RE functions as the
master and the other as back-up. You can remove the backup host subsystem (or either
of its components) without interrupting the functioning of the router. If you take the
master host subsystem offline, the backup host subsystem becomes the master.
Depending on the configuration, the individual FRUs may reboot upon switching
mastership. If the router has only one host subsystem, taking the host subsystem offline
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