Connecting a QFX5100 Device in a Virtual Chassis Fabric
The role of a QFX5100 device in a VCF is dependant on the other switch models used in the VCF
configuration. To understand the different hardware configurations supported, see “Virtual Chassis Fabric
Hardware Overview” on page 8.
You can install a VCF in a single rack, multiple racks, or in wire closets. You construct a QFX5100 VCF by
cabling and then configuring SFP+ or QSFP+ interfaces into Virtual Chassis ports (VCPs). All non-channelized
QSFP+ uplink interfaces on QFX5100 switches can be configured into VCPs. All fixed SFP+ interfaces on
QFX5100-96S switches can also be configured into VCPs.
BEST PRACTICE: Use 40-Gigabit QSFP+ ports as VCPs.
Figure 80 on page 295 shows QFX5100 devices in the leaf role in a QFX5110 VCF, while
Figure 81 on page 296 shows QFX5100-24Q in the spine role in a QFX5100 VCF. The cabling in these
examples all used QSFP+ ports as VCPs.
Figure 80: QFX5100-24Q as a Leaf Device in a QFX5110 VCF
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