Chapter 1
  |  Switch Description
Data Center Deployment
–  15  –
When mounted in a rack with other network equipment that may have a back-to-
front (B2F) airflow direction, the top-of-rack switch includes two fan trays that 
reverse the airflow direction through the switch. This enables flexible deployment 
options for the switch in the data center.
Figure 6:  B2F Airflow Cooling
Servers
ToR Switch
Front of Rack
Rear of Rack
Cool Aisle
Hot Aisle