Upgrading To The Re-Ptx-X8-64G Routing Engine In A Redundant Host Subsystem; Taking The Host Subsystem Offline Before Upgrading The Routing Engine - Juniper PTX5000 Hardware Manual

Upgrading to the RE-PTX-X8-64G Routing Engine in a Redundant Host
Subsystem
IN THIS SECTION

Taking the Host Subsystem Offline Before Upgrading the Routing Engine | 493

Removing the Backup Routing Engine During Upgrade | 495
Removing the Control Board During Upgrade | 496
Installing the CB2-PTX Control Board During Upgrade | 497
Installing the Routing Engine RE-PTX-X8-64G During Upgrade | 498
Verifying the Upgrade and Configuring the Upgraded Routing Engine | 499
In a PTX5000 with a redundant host subsystem, Routing Engine RE0 is the primary Routing Engine and
RE1 is the backup Routing Engine.
To upgrade the existing Routing Engine to the RE-PTX-X8-64G Routing Engine, perform the following
procedures:
Taking the Host Subsystem Offline Before Upgrading the Routing Engine
Before you replace a Routing Engine, you must take the host subsystem offline. The host subsystem is
taken offline and brought online as a unit. Be aware of the effect of taking a host subsystem offline on
traffic, forwarding, and routing. See
Offline" on page 462.
To take a host subsystem offline:
1. Determine whether the Routing Engine to be replaced is currently functioning as the primary or as
the backup, using one of the following methods:
• Check the HOST 0 and HOST 1 LEDs on the craft interface. If the green MASTER LED is lit, the
corresponding host subsystem is functioning as the primary.
• Check the MASTER LED on the Control Board. If the blue MASTER LED is lit, the host subsystem
is functioning as the primary.
"Understanding the Effect of Taking the PTX5000 Host Subsystem
493