Reference Guide

1544 | E-Series Debugging and Diagnostics
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power-off/on sfm
e
Power on or off a specified SFM.
Syntax
power-{off | on} sfm slot-number
Parameters
Defaults
No default values or behavior
Command Modes
EXEC
Command
History
Usage
Information
This command is used for diagnostic purposes to isolate and identify a failed SFM when
troubleshooting issues related to the chassis dataplane.
When there are a full set of SFMs online, powering down one SFM will reduce the total bandwidth
supported by the chassis, and may affect data flow. A warning message is issued at the command line
that requires user confirmation to proceed with the command (Figure 65-2).
Example
Figure 65-2. power-off sfm Command Example with Data Traffic Warning Message
Since this command is for diagnostic purposes, you can power off more than one SFM causing a switch
fabric module to go down. A warning message is issued at the command line and requires user
confirmation to proceed with the command (Figure 65-3).
Example
Figure 65-3. power-off sfm Command Example with Switch Fabric Down Warning
Message
Once the SFM is powered off, the SFM status indicates that the SFM has been powered off by the user.
Use the show sfm all command to display the status (Figure 65-4).
power-off Enter the keyword power-off to power off the SFM.
power-on Enter the keyword power-on to power on the SFM
sfm slot-number Enter the keyword sfm followed by the slot number of the SFM to power
on/off.
Range: 0 to 7
Version 6.5.4.0 Introduced
Note: Execute this command only during an offline diagnostics; this command may bring
down the switch fabric.
FTOS#power-off sfm 0
SFM0 is active. Powering it off it might impact the data traffic.
Proceed with power-off [confirm yes/no]:yes
Feb 15 23:52:53: %RPM1-P:CP %CHMGR-2-MINOR_SFM: Minor alarm: only eight working SFM
FTOS#
FTOS#power-off sfm 1
WARNING!! SFM1 is active. Powering it off it will cause Switch Fabric to go down!!
Proceed with power-off [confirm yes/no]:yes
Feb 16 00:03:19: %RPM1-P:CP %TSM-6-SFM_SWITCHFAB_STATE: Switch Fabric: DOWN
Feb 16 00:03:20: %RPM1-P:CP %CHMGR-0-MAJOR_SFM: Major alarm: Switch fabric down
FTOS#