Juniper QFX3500, Hardware Documentation

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SFP+ direct attach copper (DAC) cables
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SFP+ active optical cables (AOC)
The QFX5110-48S uplink ports (48 to 51) support:
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100-Gbps QSFP28 transceivers
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40-Gbps QSFP+ transceivers
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100-Gbps AOC
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40-Gbps AOC (Junos OS 18.3R1 and later)
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100-Gbps QSFP28 DAC cables
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40-Gbps QSFP+ DAC cables
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40-Gbps QSFP+ to SFP+ DACBO cables (40-Gbps breaks out to 10-Gbps for copper connections)
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40-Gbps AOCBO cables (40-Gbps breaks out to 10-Gbps for fiber connections)
Channelizing Interfaces
For downstream traffic, the QFX5110-48S has 4 physical or 16 logical ports that can be used for port
channelization. The default 100-Gigabit Ethernet ports can be configured as 40-Gigabit Ethernet, and in
this configuration can either operate as dedicated 40-Gigabit Ethernet ports or can be channelized to 4
independent 10-Gigabit Ethernet ports using copper or fiber breakout cables.
To channelize the ports, manually configure the port speed using the set chassis fpc slot-number port
port-number channel-speed speed command, where the speed can be set to 10-Gigabit Ethernet, 40-Gigabit
Ethernet, or 100-Gigabit Ethernet. The ports do not support auto-channelization.
Virtual Chassis and Virtual Chassis Fabric
To connect QFX5110 switches as members in a QFX5110 Virtual Chassis, you need a pair of dedicated
ports on each switch 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. QFX5110 switches are recommended in the primary, backup, or line card role. You
may only mix QFX5100 members with QFX5110 members in a QFX5110 Virtual Chassis; no other QFX
Series or EX Series switches are supported. See Connecting QFX5110 and QFX5100 Members in a QFX5110
Virtual Chassis for a a diagram of cabling QFX5110 switches in a ring topology.
To connect a QFX5110 switch as a spine or leaf device in a 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 QFX5110 in a QFX5110
Virtual Chassis Fabric for a cabling diagram.
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