Before You Begin - Juniper QFX5100 Hardware Manual

QFX5100 Switch Hardware Guide

Before You Begin

160
CAUTION: The QFabric system might experience data loss when replacing
a device in a server Node group during this procedure. Devices in redundant
server Node groups and Network Node groups should not experience data
loss.
Before You Begin on page 160
Powering Off an Existing QFabric Node Device on page 161
Adding a New Node Device to a Node Group in a QFabric System on page 163
Before adding a new device or replacing an existing node device, review the following
checklist:
If the switch you plan to install as a Node device was previously used as a standalone
switch and had advanced feature licenses installed, you can transfer those licenses
to a new device. Contact your Juniper Networks sales representative for more
information.
Ensure interfaces are grouped into a LAG interface for rerouting of traffic when a device
is unavailable.
Ensure all devices have an alias name configured before starting the replacement
process. See Gaining Access to the QFabric System Through the Default Partition and
Configuring Aliases for the QFabric System.
TIP: By default the Node devices are identified using their hardware serial
number. Aliases take the place of the hardware serial numbers and help
to simplify configuration tasks. The chassis serial number ID label is located
in different locations depending upon the QFX switch model. See the
hardware guide for your QFX switch model.
Follow all standard installation safety guidelines.
Ensure that you have taken the necessary precautions to prevent electrostatic
discharge (ESD) damage. See
page 210.
Ensure that you do not need to forward traffic through the device.
If possible, rack mount and install the new or replacement Node device to minimize
the amount of time it takes to replace the device.
Ensure that you have the following parts and tools available:
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 port
"Prevention of Electrostatic Discharge Damage" on
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