Rear Panel of a QFX3500 Device

 

The rear panel of the QFX3500 device consists of the following components:

  • Access ports—The QFX3500 device has 48 access ports (0 through 47) that support small form-factor pluggable plus (SFP+) and small form-factor pluggable (SFP) transceivers, as well as SFP+ direct attach copper cables, also known as Twinax cables. See Determining Interface Support for the QFX3500 Device.

    • Up to 48 of the access ports can be used for SFP+ transceivers or SFP+ direct attach copper cables. You can use 10-Gigabit Ethernet SFP+ transceivers and SFP+ direct attach copper cables in any access port. You can use 2-Gbps, 4-Gbps, or 8-Gbps Fibre Channel SFP+ transceivers in ports 0 through 5 and ports 42 through 47.

      Note

      If you use Fibre Channel SFP+ transceivers in ports 0 through 5 or ports 42 through 47, you must configure the entire block of ports as Fibre Channel ports. For example, if you use a Fibre Channel SFP+ transceiver in any of the ports 0 through 5, then ports 0 through 5 must be configured as Fibre Channel ports. If you use a Fibre Channel SFP+ transceiver in any of the ports 42 through 47, then ports 42 through 47 must be configured as Fibre Channel ports. You then cannot use 10-Gigabit Ethernet SFP+ transceivers in these ports.

    • Up to 36 of the access ports can be used for SFP transceivers. Gigabit Ethernet SFP transceivers can be used in ports 6 through 41.

      Caution

      Do not place a copper transceiver in an access port directly above or below another copper transceiver. Internal damage to the access ports and device can occur. Because of this limitation, a maximum of 18 copper transceivers can be installed in ports 6 through 41. We recommend using only the top row of access ports for copper transceivers.

  • Uplink ports—The QFX3500 device has four uplink ports (Q0 through Q3) that support up to four QSFP+ DAC breakout cables. See Determining Interface Support for the QFX3500 Device. When the QFX3500 device is used as a Node device in a QFabric system, these uplink ports are used to connect the QFX3500 Node devices to Interconnect devices.

    Note

    The QSFP+ uplink ports are not supported in Junos OS Release 11.1. The QSFP+ uplink ports are supported in Junos OS Release 11.2 and later.

  • Access port and uplink port LEDs

Figure 1 shows the rear panel of a QFX3500 device.

Figure 1: QFX3500 Device Rear Panel
QFX3500 Device Rear Panel