M40e and M160 Router Redundant Cooling System Components
The M40e and M160 routers include the following cooling system components:
- Front cooling subsystem—Cools the FPCs, PICs, and midplane. It includes a fan tray located behind the cable management system and a large, central impeller behind the craft interface (fan tray front left, fan tray front right, fan tray rear left, fan tray rear right, and front top blower).
- Rear cooling subsystem—Cools the Switching and Forwarding Modules (SFMs), host module, PFE Clock Generators (PCGs), and power supplies. It includes one impeller located at the upper right of the chassis rear and another at the lower left, as shown in Figure 217 (rear top blower and rear bottom blower). The upper and lower impellers are not interchangeable.
Figure 217 shows the M40e and M160 router cooling system components and airflow.
Figure 218 shows the M40e and M160 router cooling system components.
