The Extreme 8720 switch includes the following models:
8720-32C
The 8720-32C base switch includes six empty fan module slots and two empty power supply module slots. Fan modules and power supply modules must be ordered separately.
8720-32C-AC-F
The 8720-32C-AC-F switch includes two AC power supply modules and six fan modules. Airflow for both the fan modules and the powers supply modules is front-to-back.
8720-32C-AC-R
The 8720-32C-AC-R switch includes two AC power supply modules and six fan modules. Airflow for both the fan modules and the powers supply modules is back-to-front.
8720-32C-DC-F
The 7820-32C-AC-F switch includes two AC power supply modules and six fan modules. Airflow for both the fan modules and the powers supply modules is front-to-back.
8720-32C-DC-R
The 7820-32C-AC-R switch includes two AC power supply modules and six fan modules. Airflow for both the fan modules and the powers supply modules is back-to-front.
The front panel of the switch includes:
1 = 32 x 40/100Gbps QSFP+/QSFP28 Ethernet ports
2 = Serial console port (RJ-45)
3 = Status LEDs
4 = USB Type-A port for management or external USB flash
5 = RJ-45 out-of-band 10/100/1000BASE-T management Ethernet port
All of the front-panel ports on the 8720-32C switch operate in either 100 gigabit or 40 gigabit mode, and each port supports multiple data lanes through the use of breakout cables. This means that a given physical port can correspond to either two or four logical ports.
In 100-gigabit mode, each port supports four 25-gigabit data lanes.
In 40-gigabit mode, each port supports four 10-gigabit data lanes.
The rear panel of the switch includes:
1 = Grounding lug
2 = 2 x Power supply slots
3 = 6 x Fan modules
Note
The color of the tab on the fan tray indicates the airflow direction:
