NOTE
ExtremeSwitching CES-4X-RT/ExtremeRouting CER-4X-RT supports the XNI-CE-2000-FAN pre-installed or as a spare. All
other models support the NI-CE-2000-FAN.
The fans in the devices include six four-speed fans that operate at low speed, medium speed, medium-high speed, and high speed
based on the ambient temperature and configured or default temperature thresholds. All fans operate simultaneously at the same speed.
If a single fan fails within the assembly, the fan tray should be replaced. The fan tray is hot swappable and the mean time to recover
(MTTR) is one minute.
The system uses a default or configured temperature threshold associated with it to determine at which speed the fan should operate.
Hardware features
ExtremeSwitching CES 2000 Series and ExtremeRouting CER 2000 Series Hardware Installation Guide
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