Replacing A Control Board Or Routing Engine Component - Juniper T4000 Hardware Manual

T4000 Router Hardware Guide

Replacing a Control Board or Routing Engine Component

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To halt the router:
3.
user@host> request system halt
If two Routing Engines are installed, also issue the command on the backup Routing
Engine. Wait until a message appears on the console confirming that the operating
system has halted.
The command shuts down the Routing Engine cleanly, so its state information is
preserved.
NOTE: The SIBs might continue forwarding traffic for approximately 5
minutes after the
On the console or other management device connected to the other Routing Engine,
4.
enter CLI operational mode and issue the following command.
user@host> request chassis cb offline slot n
n is 0 or 1 for the slot number of the host subsystem being taken offline.
Verify that the control board is offline:
5.
user@host> show chassis environment cb 0
NOTE: To replace a solid-state disk or CompactFlash card, you must power
off the Routing Engine.
After you take the host subsystem offline, you can replace the following host subsystem
components:
Replacing a T4000 LCC-CB on page 228
Replacing a T4000 Routing Engine on page 267
Replacing a CompactFlash Card in a T4000 RE-C1800 Routing Engine on page 270
Replacing a Solid-State Disk in a T4000 RE-C1800 Routing Engine on page 273
Replacing a DIMM Module in a T4000 RE-C1800 Routing Engine on page 276
T4000 Host Subsystem Description on page 35
Preventing T4000 Electrostatic Discharge Damage on page 296
request system halt
Chassis Operational Mode Commands
command has been issued.
request system halt
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