Determining Interface Support for the QFX3600 Device
The QFX3600 device provides 16 QSFP+ ports, which support QSFP+ transceivers and QSFP+ DAC or DAC breakout cables.
On a QFX3600 Node device in a QFabric system, four ports (labeled Q0 through Q3) operate as 40-Gbps
data uplink (fte) ports for uplink connections between
your QFX3600 Node device and your Interconnect device. Twelve ports
(labeled Q4 through Q15)
operate in 10-Gigabit Ethernet (xe) mode to support 48
10-Gigabit Ethernet interfaces for connections to either endpoint
systems or external networks. Optionally, you can choose to configure
ports Q0 through Q7 to operate
as 40-Gbps data uplink (fte) ports, and ports Q2 through Q15 to operate in 10-Gigabit
Ethernet (xe) or 40-Gigabit Ethernet (xle) mode.
See Configuring the Port Type on QFX3600
Node Devices for more information.
On a QFX3600 standalone switch, ports Q0 through Q15 operate as 40-Gigabit Ethernet
(xle) ports. Optionally, you can choose to configure ports Q0 through Q15 to operate as 10-Gigabit
Ethernet (xe) ports. See Configuring
the Port Type on QFX3600 Standalone Switches for more
information.
On a QFX3600 standalone switch, you can either configure up to 63 or 64 10-Gigabit Ethernet ports on ports Q0 through Q15, depending on the Junos OS release running on the switch. See the Channelizing Interfaces topic for your specific Junos OS release for further details.
You can use SFP transceivers to connect the QFX3600 device to a management network, or the control plane and management network of a QFabric system. The 1000BASE-SX Gigabit Ethernet SFP module (QFX-SFP-1GE-SX) is supported in the SFP management ports labeled C0S and C1S. The QFX3600 device also has two 1000BASE-T RJ-45 management ports (labeled C0 and C1), which can be used to connect the QFX3600 device to a management network, or the control plane and management network of a QFabric system.
The QSFP+ DAC cables consist of a cable assembly terminated with QSFP+ transceivers on either end. If you use the QSFP+ DAC cable as the data plane connection between a QFX3600-I Interconnect device and a QFX3600 or QFX3500 Node device, the interface is automatically configured to operate at 40 Gbps. If you use the QSFP+ DAC cable to interconnect a QFX3600 Node device with another device, the interface is automatically configured to operate as four 10-Gigabit Ethernet interfaces over one cable.
You can find information about the optical transceivers supported on your Juniper device by using the Hardware Compatibility Tool. In addition to transceiver and connection type, the optical and cable characteristics–where applicable–are documented for each transceiver. The Hardware Compatibility Tool enables you to search by product, displaying all the transceivers supported on that device, or category, by interface speed or type. The list of supported transceivers for the QFX3600 and QFX3600-I Interconnect device is located at https://pathfinder.juniper.net/hct/product/#prd=QFX3600.
If you face a problem running a Juniper Networks device that uses a third-party optic or cable, the Juniper Networks Technical Assistance Center (JTAC) can help you diagnose the source of the problem. Your JTAC engineer might recommend that you check the third-party optic or cable and potentially replace it with an equivalent Juniper Networks optic or cable that is qualified for the device.