Taking An Mx2020 Host Subsystem Offline - Juniper MX2020 Hardware Manual

MX2020 3D Universal Edge Router Hardware Guide
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Taking an MX2020 Host Subsystem Offline

230
NOTE: Router performance might change if the backup CB-REs configuration
differs from the former master's configuration. For the most predictable
performance, configure the two CB-RE identically, except for parameters
unique to each Routing Engine.
To configure the Routing Engine on the Control Board (CB-RE)—specific parameters and
still use the same configuration on both Routing Engines on the Control Board, include
the appropriate configuration statements under the
groups ] hierarchy level, and use the
Junos OS System Basics Configuration Guide
NOTE: For information about configuring graceful Routing Engine on the
CB-RE switchover, graceful restart, and nonstop active routing, see the
OS High Availability Configuration Guide
NOTE: The first supported release for both graceful Routing Engine on the
CB-RE switchover and nonstop active routing on the router is Junos OS
Release 12.3R2. Graceful restart software requirements depend on the routing
protocols configured on the router. For the minimum software requirements
for graceful restart, see the
MX2020 Host Subsystem Description on page 25
Taking an MX2020 Host Subsystem Offline on page 230
Maintaining the MX2020 Host Subsystem on page 163
Before you take a host subsystem offline, see
Subsystem Offline" on page
To take a host subsystem offline:
Determine whether the host subsystem is functioning as the master or as the backup,
1.
using one of the two following methods:
Check the Routing Engine LEDs on the craft interface. If the green
lit, the corresponding host subsystem is functioning as the master.
Issue the following command. The master Routing Engine is designated
the field:
Current state
user@host> show chassis routing-engine
Routing Engine status:
Slot 0:
Current state
Election priority
re0
apply-groups statement. For instructions, see the
.
.
Junos OS High Availability Configuration Guide
"Effect of Taking the MX2020 Host
228.
Master
Master (default)
and statements at the [
re1
LED is
MASTER
Master
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