Cisco Voice gateway C3900 Version 15.0(1r)M8 gives following error.
PLATFORM-2-SM_ERROR: The SM Slot number 0 does not exist on the IO Controller
PLATFORM-2-SM_ERROR: The SM Slot number 0 does not exist on the IO Controller
It's due to bug -
https://bst.cloudapps.cisco.com/bugsearch/bug/CSCty69112/?reffering_site=dumpcr
Fix -
suggests the IOS version 15.5.3M5 which has the fix for the bug that your device is getting.
https://software.cisco.com/download/release.html?mdfid=282774228&flowid=7442&softwareid=280805680&release=15.5.3M5&relind=AVAILABLE&rellifecycle=MD&reltype=latest
Please upgrade your device to the version in the link
Impact:-
From bugs notes:
Executing show energywise command could see traceback.
Traceback and error message is seen whenever xfr_sm_present function called with invalid slot number (slot 0) and the 'xfr_sm_present' function is called to calculate the module and platform total power usage. The condition can occur with execution of 'show env and show energywise' CLI and with SNMP query to get the platform module power.
The bug does not have a network impact but you might receive these errors in the future unless you perform an IOS upgrade.
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