Juniper QFX3500, Hardware Documentation

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Virtual Chassis
You can interconnect a maximum of 10 EX4300 switches to form a Virtual Chassis. You can operate these
interconnected switches as a single, logical device with a single IP address.
You can use the following ports to configure an EX4300 switch in a Virtual Chassis:
•
For 24-port and 48-port EX4300 switches except EX4300-48MP and EX4300-48MP-S switches:
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QSFP+ ports configured as VCPs
•
SFP+ uplink module ports configured as VCPs
•
For 32-port EX4300 switches:
•
QSFP+ ports (built-in) or QSFP+ uplink module ports configured as VCPs
•
SFP+ uplink module ports configured as VCPs
NOTE: The four built-in SFP+ ports on 32-port EX4300 switches cannot be configured as
VCPs.
•
For EX4300-48MP and EX4300-48MP-S switches:
•
QSFP+ ports
By default, the built-in QSFP+ ports are dedicated VCPs. In 48-port EX4300 switches except
EX4300-48MP and EX4300-48MP-S switches, you can use the QSFP+ ports as network ports or as
VCPs. You can also use the SFP+ uplink module ports to connect members of a Virtual Chassis or a VCF
across multiple wiring closets by configuring these ports as VCPs.
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 Understanding EX Series Virtual Chassis. For more information
about VCFs, see
“Virtual Chassis Fabric Overview” on page 2 .
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