What log is it?

[jinseo]

WS-C3850-48XS 

Version 16.3.7

*Aug 31 12:13:20: %FED_L3_ERRMSG-3-RSRC_ERR:Switch 1 R0/0: fed: Failed to allocate hardware resource(REP RI) for VRFID:0 (10.19.234.39, 239.19.234.39) - rc:1
*Aug 31 12:13:51: %FED_L3_ERRMSG-3-RSRC_ERR:Switch 1 R0/0: fed: Failed to allocate hardware resource(REP RI) for VRFID:0 (10.19.229.50, 239.255.255.250) - rc:1

[Leo Laohoo]

That error message is coming from the FED (forwarding engine daemon).  
Post the complete output to the command "sh platform software status control-processor brief".

[jinseo]

Why does the log occur?
How do I stop logging?

[Leo Laohoo]

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@jinseo wrote:
Why does the log occur?
How do I stop logging?

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What is the intention of these questions? 

1. Do you want to know WHY this logs are occurring?  OR
2. Do you want stop seeing these logs?

[jinseo]

I want to know WHY this logs are occurring

[Leo Laohoo]

@Mark Elsen has already provided the Bug ID. 
Raise a TAC Case and get TAC to verify.

[Mark Elsen · Accepted solution]

               - FYI : https://bst.cloudapps.cisco.com/bugsearch/bug/CSCul30304

 M.