Checking the Cooling System Alarms ! 269
Chapter 19: Monitoring the Cooling System
For T320 routers and T640 routing nodes (see also Figure 118 on page 264,
Figure 117 on page 264, Figure 119 on page 265, and Figure 120 on page 266):
user@host>
show chassis environment
Class Item Status Measurement
Fans Top Left Front fan OK Spinning at normal speed
Top Left Middle fan OK Spinning at normal speed
Top Left Rear fan OK Spinning at normal speed
Top Right Front fan OK Spinning at normal speed
Top Right Middle fan OK Spinning at normal speed
Top Right Rear fan OK Spinning at normal speed
Bottom Left Front fan OK Spinning at normal speed
Bottom Left Middle fan OK Spinning at normal speed
Bottom Left Rear fan OK Spinning at normal speed
Bottom Right Front fan OK Spinning at normal speed
Bottom Right Middle fan OK Spinning at normal speed
Bottom Right Rear fan OK Spinning at normal speed
Fourth Blower from top OK Spinning at normal speed
Bottom Blower OK Spinning at normal speed
Middle Blower OK Spinning at normal speed
Top Blower OK Spinning at normal speed
Second Blower from top OK Spinning at normal speed
What It Means The command output shows the fans, impellers, or blowers monitored for the router
type. The command output displays the fan, impeller, or blower status and the
spinning speed.
Top Left and Top Right refer to fans in the upper front fan tray;
Bottom Left and Bottom Right refer to fans in the lower front fan tray; Blower refers to
fans in the rear fan tray. The status can be
OK, Testin g (during initial power-on),
Failed, or Absent. Measurement indicates if the fan or impeller is spinning at normal
or high speed.
Checking the Cooling System Alarms
For a listing of cooling system alarm conditions, remedy, and alarm severity by
routing platform type, see “Display the Current Router Alarms” on page 61.
Steps To Take To check for cooling system alarms, follow these steps:
1. Check the Alarm Indicators on the Craft Interface on page 270
2. Display Current Cooling System Alarms on page 270
3. Display Cooling System Error Messages in the System Log File on page 271
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