cables. You can use 1-Gigabit Ethernet SFP+, 10-Gigabit Ethernet SFP+ transceivers and SFP+ DAC cables
in any access port.
The remaining 24 logical ports are the six 40 GbE physical ports (48 through 53) that support up to 6 quad
small-form factor pluggable plus (QSFP+) transceivers . Each QSFP+ socket can operate either as a single
40 Gbps port or as a set of 4 independent 10 Gbps ports using QSFP+ breakout cables. The 40 GbE ports
can be configured as either access ports or as uplinks.
CAUTION: Do not install 1GbE copper transceivers (such as QFX-SFP-1GE-T) directly
above or below another 1GbE copper transceiver. Use only the top row or bottom
row to avoid damage to the device caused by some types of copper transceivers when
the transceivers are installed above or below each other. However, if you are using
copper transceivers with the OEM part number FCLF8521P2BTL-J1 printed on the
transceiver label, you can install the transceivers in any port with no restrictions. For
devices that support 10GbE copper transceivers, there is no similar restriction.
To connect a QFX5100-48S switch as a node device in a QFabric system, you need:
•
Four QSFP+ uplink ports on each QFX5100-48S Node device to connect to the data plane network
through the QFX3008-I or QFX5100-24Q Interconnect devices.
•
The two remaining QSFP+ uplink ports on each QFX5100-48S Node device connect to the data plane
network through the QFX3008-I or QFX5100-24Q Interconnect devices. See “Determining Interface
Support for the QFX5100 Device” on page 137.
To connect a QFX5100-48S switch as a member in a QFX Virtual Chassis, you need a pair of dedicated
ports and cables that link each member in the Virtual Chassis into a ring topology. Each member in the
ring has at least one direct Virtual Chassis port (VCP) connection to a upstream and downstream member.
QFX5100-48S switches are recommended in the primary, backup, or line card role. When mixed with
QFX3500 or QFX3600 devices, configure the QFX5100-48S in the primary and backup roles. See
“Connecting QFX Series and EX Series Switches in a QFX Virtual Chassis” on page 319 for cabling diagrams.
To connect a QFX5100-48S switch as a spine or leaf device in a QFX5100 Virtual Chassis Fabric (VCF),
you need a pair of dedicated ports and cables that link each spine device and leaf device in the VCF. All
spine devices have at least one direct VCP connection to each leaf device in the VCF. See “Connecting a
QFX5100 Device in a Virtual Chassis Fabric” on page 295 for a cabling diagram.
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