Juniper QFabric QFX3000-G Hardware Documentation page 195

Uplink Modules
Copyright © 2018, Juniper Networks, Inc.
In EX4300-48MP and EX4300-48MP-S switches, you can use only the built-in QSFP+
ports as VCPs to connect the switch in a Virtual Chassis. You cannot configure the ports
on the uplink module in EX4300-48MP and EX4300-48MP-S switches to Virtual Chassis
ports (VCPs). You cannot configure the built-in QSFP+ ports as network ports.
NOTE: EX4300-48MP switches can be a part of an EX4300 Virtual Chassis
with other EX4300 switches only. If you want to create a Virtual Chassis
comprising EX4300-48MP switch and other EX4300 switches, you must
connect it to a 40-Gbps port on the other EX4300 switches in the Virtual
Chassis configuration. In a Virtual Chassis configuration comprising
EX4300-48MP switches, EX4300 switches can be configured only in the line
card role.
For more information about Virtual Chassis, see EX Series Virtual Chassis Overview. For
more information about VCFs, see Virtual Chassis Fabric Overview.
EX4300 switches provide one slot for installing an optional uplink module. You can use
the uplink module ports to connect the switch to other devices. You can also configure
these ports on EX4300 switches except EX4300-48MP and EX4300-48MP-S switches
as VCPs and use them to interconnect EX4300 switches to form a Virtual Chassis or a
VCF configuration by using SFP+ transceivers.
NOTE: You cannot configure the ports on the uplink module in EX4300-48MP
and EX4300-48MP-S switches as Virtual Chassis ports (VCPs).
Table 32 on page 146 lists the uplink modules supported on 24-port and 48-port EX4300
switches except EX4300-48MP and EX4300-48MP-S switches.
lists the uplink modules supported on 32-port EX4300 switch models.
lists the uplink module supported on EX4300-48MP and EX4300-48MP-S switches.
Chapter 7: EX4300 Overview
Table 33 on page 146
Table 34 on page 146
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