•
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.
Figure 3 on page 6 shows the location of the SFP+ access ports, including the ports that
can be used with Fibre Channel SFP+ transceivers and Gigabit Ethernet SFP transceivers.
Figure 3: SFP+ Access Port Locations
10-Gigabit Ethernet
or Fibre Channel ports
QSFP+ Uplink ports
10-Gigabit Ethernet
or Fibre Channel ports
10-Gigabit Ethernet
or 1-Gigabit Ethernet ports
LA
ST
LA
ST
LA
ST
LA
ST
Q0 Q1 Q2 Q3 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 470 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23
g050013
QSFP+ Uplink Ports
The QFX3500 devicehas four uplink ports (Q0 through Q3) that support up to four QSFP+
transceivers, as well as QSFP+ DAC or DAC breakout cables. See “Determining Interface
Support for the QFX3500 Device” on page 59.
When the QFX3500 device is used as part of a QFabric system, these uplink ports are
used to connect the QFX3500 Node device to QFX3008-I or QFX3600-I Interconnect
devices. See Connecting a QFX3500 Node Device to a QFX3008-I Interconnect Device or
Connecting a QFX3500 Node Device to a QFX3600-I Interconnect Device.
When the QFX3500 device is used as a standalone switch, these uplink ports are
configured by default as 15 10-Gigabit Ethernet interfaces. Another option for these ports
is to configure one or more of the ports as 40-Gigabit Ethernet interfaces.
NOTE: Port Q0 is unique in that the number of 10-Gigabit Ethernet interfaces
supported varies by Junos OS release. In some Junos OS releases, port 00
has a reserved port and in other releases the port is available. See the topics
on Channelizing Interfaces or Configuring the Port Type, for your specific
release.
Figure 4 on page 7 shows the location of the QSFP+ uplink ports and the default
10-Gigabit Ethernet interface numbering.
Copyright © 2017, Juniper Networks, Inc.6
QFX3500 Device Hardware Documentation
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