ExtremeSwitching X770 Series Switches

The X770 series switches have 32 front-panel Ethernet ports that can provide 40-gigabit Ethernet connectivity using installable QSFP+ optical modules. The ports can operate in 40-gigabit mode, or with appropriate optical modules can be partitioned into 10-gigabit data lanes. Both native stacking and alternate stacking are supported using the front panel-ports.

For details on port data capacity and numbering, see Summit X770-32q Switch Ports and Slots.

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 difference 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 offer 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 different 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.



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.


Air must flow in the same direction for all installed fan modules and power supplies in a switch.

X770 series switches require ExtremeXOS version or later, or any release of EXOS version 21 or 22.