Virtual Chassis, we recommend to use QFX5110 switches in the master and backup
Routing Engine roles, and QFX5100 switches only in the linecard role.
•
A spine or leaf device in a QFX5110 VCF (Junos OS Release 17.3R1 and later).
VCF uses QFX Virtual Chassis technology to interconnect multiple devices into a single
logical device and manage that device as a single logical device inside of a fabric
architecture. You can configure up to a total of 20 QFX5110 or QFX5100 devices in a
VCF. Out of the 20 total devices, you can configure a maximum of 4 spine devices. You
can use these models in any combination as leaf devices:
•
QFX5100-24Q
•
QFX5100-48S
•
QFX5100-48T (Junos OS Release 17.3R2 and later)
•
QFX5100-96S
•
QFX5110-48S
NOTE: If only QFX5110-48S switches are available, cable and configure
the switches as a QFX5110 Virtual chassis.
NOTE: Unike a QFX5100 VCF, EX4300 switches are not supported in the
QFX5110 VCF.
The QFX5110-48S can be used as:
•
A standalone switch (Junos OS Release 15.1X53-D210 and later).
•
A master, backup, or line card in a QFX5110 Virtual Chassis (Junos OS Release 17.3R1
and later).
A QFX5110 Series Virtual Chassis allows you to connect up to 10 QFX5110 or supported
QFX5100 switches into one logical device and manage the device as a single chassis
using a ring topology. The following QFX5100 switches are supported in a QFX5110
Virtual Chassis:
•
QFX5100-24Q
•
QFX5100-48S
•
QFX5100-96S
For a QFX5100 switch to participate in a QFX5110 Virtual Chassis, the switch must have
the same software version and image installed as the software running on the QFX5110
switches in the Virtual Chassis. You do not need to configure mixed mode. In a QFX5110
Virtual Chassis, we recommend to use QFX5110 switches in the master and backup
Routing Engine roles, and QFX5100 switches only in the line card role.
•
A leaf device in a QFX5110 VCF (Junos OS Release 17.3R1 and later).
21Copyright © 2019, Juniper Networks, Inc.
Chapter 1: Overview
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