Upgrading To The Remx2K-X8-64G Cb-Re In A Nonredundant Host Subsystem; Taking The Host Subsystem Offline - Juniper MX2020 Hardware Manual

Upgrading to the REMX2K-X8-64G CB-RE in a Nonredundant Host
Subsystem
In a nonredundant host subsystem, only one Routing Engine-Control Board (CB-RE) is present in the
chassis. When you upgrade the CB-RE, taking the host subsystem offline shuts down the router. To upgrade
the host subsystem with the REMX2K-X8-64G CB-RE, you must uninstall the existing CB-RE and install
the REMX2K-X8-64G CB-RE.
NOTE: Save the router configuration before proceeding with the REMX2K-X8-64G CB-RE
upgrade.

Taking the Host Subsystem Offline | 516

1.
Removing the CB-RE | 517
2.
Installing the REMX2K-X8-64G CB-RE | 518
3.
Verifying and Configuring the Upgraded CB-RE | 519
4.
Taking the Host Subsystem Offline
To take the host subsystem offline perform the following steps:
1. On the external management device connected to the Routing Engine, issue the request system halt
operational mode command. The command shuts down the Routing Engines cleanly by preserving their
state information.
user@host> request system halt
Wait until a message appears on the console confirming that the operating system has halted.
2. Take the Control board offline by using the request chassis cb slot 0/1 offline operational mode
command. The command shuts down the CB-RE completely.
user@host> request chassis cb slot 1 offline
516