•
If you are expanding a preprovisioned configuration, made a note of the serial number
(the number is on the back of the switch). You will need to edit the Virtual Chassis
configuration to include the serial number of the new member switch.
•
If you are expanding a preprovisioned configuration, edited the existing Virtual Chassis
configuration to include the serial number of the new member switch. The parameters
specified in the master Virtual Chassis configuration file are applied to the new switch
after it has been interconnected to an existing member switch.
NOTE: If you are expandinga preprovisionedVirtualChassis configuration,
you can use the autoprovisioning feature to add member switches to that
configuration.
•
(Optional)ConfiguredEthernet interfaces on differentmember switches into the same
LAG. See Configuring Link Aggregation.
An active member switch might temporarily go down before coming back up as part
of this procedure. Having traffic load-balanced across member switches using a LAG
helps alleviate traffic loss during this procedure.
To add a new member switch to an existing Virtual Chassis configuration:
1. If the new member switch has been previously configured, revert that switch’s
configuration to the factory defaults before interconnecting it into the Virtual Chassis.
See Reverting to the Default Factory Configuration.
2. (Required for a mixed Virtual Chassis only) Set the new switch into mixed mode and
reboot the switch to complete the configuration:
NOTE: You do not need to configure your Virtual Chassis into mixed mode
if the Virtual Chassisis composedof onlyQFX3500 and QFX3600 switches
or only QFX5110 and QFX5100 switches (which are considered non-mixed
Virtual Chassis).
user@device> request virtual-chassis mode mixed reboot
If you are adding a switch that converts a non-mixed Virtual Chassis into a mixed
Virtual Chassis, you must also log onto the Virtual Chassis and enter the request
virtual-chassis mode mixed all-members reboot command either before or after
interconnecting the new switch into your Virtual Chassis.
3. Interconnect the new switch to one member of the existing Virtual Chassis using an
interface that can be configured into a VCP. See “Understanding QFX Series Virtual
Chassis Components” on page 11 for details on ports that can be used as VCPs.
Connect only one interface on the new switch to a VCP on a member switch in the
existing Virtual Chassis at this point of the procedure.
Copyright © 2017, Juniper Networks, Inc.108
QFX3500 Device Hardware Documentation
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