Installation Guide

For details on port data capacity and numbering, see Summit X770-32q Switch Ports and Slots on page
154.
The X770 provides latency less than 600 nanoseconds and supports cut-through switching to help
optimize high frequency trading applications as well as latency sensitive cluster computing.
Each base model is available with either front-to-back or back-to-front cooling. There is no operational
dierence between these switch versions.
A serial console port on the front panel of the X770-32q series switch allows you to connect a terminal
and perform local management. An Ethernet management port can be used to connect the system to a
parallel management network for administration. Alternatively, you can use an Ethernet cable to
connect this port directly to a laptop to view and locally manage the switch configuration. The Ethernet
management port supports 10/100/1000 Mbps speeds. There is also a USB port.
X770 switches oer Boundary Clock (BC), Transparent Clock (TC), and Ordinary Clock (OC) for
synchronizing phase and frequency and allowing the network and the connected devices to be
synchronized over Ethernet connections. Precision is +-2 nanoseconds (ns) with time accurancy +50 to
-65 ns.
Switch cooling is provided by five hot-swappable fan modules providing N+1 redundancy. Fan modules
are available in two dierent models that direct the airflow either from front to back or from back to
front. All five installed fan modules must be of the same model, so that they all direct the airflow in the
same direction.
Note
Ensure that all fan module slots are filled when the switch is powered on. Fan modules can be
hot-swapped after power has been turned on.
Two power supply bays accommodate either AC or DC power supplies. Power supplies have integrated
cooling fans that operate independently of the switch fans. Like the fan modules, the power supplies are
available in models with either front-to-back or back-to-front cooling airflow.
Note
Air must flow in the same direction for all installed fan modules and power supplies in a
switch.
X770 series switches require ExtremeXOS version 15.4.1.3 or later, or any release of EXOS version 21 or
22.
Summit X770-32q Switch Ports and Slots
The front panel of the Summit X770-32q switch includes:
• 32 40-gigabit Ethernet ports capable of supporting passive copper QSFP+ and active fiber QSFP+.
With quad fan-out SFP+ cables, the QSFP+ ports can be partitioned into 10-gigabit data lanes: 24 of
the ports can be partitioned into four 10-gigabit data lanes, and the remaining eight ports can be
used as single 10-gigabit data lanes. This yields a total of 104 10-gigabit ports as shown in Figure 158:
Summit X770-32q Switch Ports and Slots
Summit Switches
154 Summit Family Hardware Installation Guide