Cooling; Power Supplies; Versatile Interface Module Options; Stacking - Extreme Networks ExtremeSwitching 5720 Series Hardware Installation Manual

Cooling

Cooling
Each base model is available with front-to-back cooling.
Switch cooling is provided by replaceable fan modules. The available fan module uses airflow from front
to back. Two modular power supply slots accommodate AC power supplies. Power supplies have
integrated cooling fans that operate independently of the switch fan.
A spare fan module (XN-FAN-005-F) with front-to-back airflow is available for 5720 Series switches.

Power Supplies

Two power supply bays accommodate modular AC 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 front-to-back cooling airflow. For more information about the power supplies
used in the 5720 Series switches, see
Power supplies are ordered separately.

Versatile Interface Module Options

The following Versatile Interface Modules (VIM) are available for 5720 Series switches:
•
5720-VIM-2CE versatile interface module that provides two 100-GbE (QSFP28) MACsec capable
ports.
•
5720-VIM-6YE versatile interface module that provides six 25-GbE (SFP28) MACsec capable ports.
Warning
The switch must be powered off before you install any VIM options. The interface module
options are not hot swappable.
See Expansion Modules

Stacking

Each 5720 unit comes equipped with two 100GbE stacking ports, also referred to as Universal Ethernet
ports. When running Switch Engine, up to eight systems can be stacked using qualified QSFP28 direct
attach cables and optical transceivers located on the front panel of the switch. QSFP28 passive direct
attach cables can be used in the QSFP28 ports for stacking 5720s together using SummitStack-V400,
as well as stacking 5720s and 5520s using SummitStack-V200.
Note
The two stacking/QSFP ports are "Universal Ethernet" ports, labeled "U1" and "U2." These
ports can operate either as stacking ports with Switch Engine or as Ethernet ports with
Switch Engine and with Fabric Engine in non-fabric mode. When used as Ethernet ports, the
U1 and U2 ports can support data rates of 100Gb, 2 x 50Gb (Switch Engine only), 1 x 40Gb, 4 x
25Gb, or 4 x 10Gb using QSFP+ optics.
Use the disable stacking-support command to set the U1 and U2 ports in Ethernet
mode.
12 ExtremeSwitching 5720 Series Hardware Installation Guide
Power Supplies for Use with Your Switch
on page 21 for more information regarding VIM modules.
ExtremeSwitching 5720 Series Overview
on page 19.