Juniper QFX Series User Manual

•
Ensure that you havetaken the necessary precautions to prevent electrostatic discharge
(ESD) damage. See “Prevention of Electrostatic Discharge Damage” on page 192.
•
Ensure that you do not need to forward traffic through the device.
•
Determine whether the Control Board is the master or backup using one of these
methods:
•
Check the MASTER LED on the Control Board faceplate. If the MASTER LED is lit
steady green, the Control Board is the master.
•
Issue the show chassis routing-engine CLI command.
Ensure that you have the following parts and tools available to power off the device:
•
An ESD grounding strap
•
An external management device such as a PC
•
An RJ-45 to DB-9 rollover cable to connect the external management device to the
console (CON) port
To take the Control Board offline in a QFX3008-I Interconnect device, perform the tasks
appropriate for your device:
1.
Taking a Master Control Board Offline on page 346
2.
Taking a Backup Control Board Offline on page 347
Taking a Master Control Board Offline
To take a master Control Board offline in a QFX3008-I Interconnect device:
1. Connect a management device to the console (CONSOLE) port on the master Control
Board in the QFX3008-I Interconnect device. For instructions about connecting a
management device to the console (CONSOLE) port, see “Connecting a QFX Series
Device to a Management Console” on page 285.
2. Make the master Control Board the backup Control Board by using the request chassis
routing-engine master switch CLI command.
The current backup Control Board becomes the master Control Board after this
command is issued.
CAUTION: Until the backup Control Board assumes mastership, no data
traffic is forwarded over the QFX3008-I Interconnect device. Data traffic
over other QFX3008-I Interconnect devices in your QFX3000 QFabric
system is not disrupted.
3. Use the show chassis routing-engine command to confirm thatmastership haschanged.
4. Connect the management device to the console (CONSOLE) port on the new master
Control Board in the QFX3008-I Interconnect device.
Copyright © 2012, Juniper Networks, Inc.346
QFX3000 Hardware Documentation

Juniper QFX Series Specifications

General

Category	Switch
Series	QFX
Form Factor	1U, 2U, and modular chassis options
Power Supply	Redundant, hot-swappable power supplies
Cooling	hot-swappable fans
Virtual Chassis	Supported on certain models
Typical Use	Data center, cloud
Operating System	Junos OS
Management	CLI
Key Features	High performance, low latency, automation
Latency	Sub-microsecond latency
Port Density	Varies by model (e.g., QFX5100: up to 48x10GbE + 6x40GbE)