I download aruba-instant-mibs_6.5.4.3_61959.tar.gz and unzipped.
What means aruba in your command? # snmpwalk -v2c -cpublic -O0X -mALL -M. 192.168.40.100 aruba | grep -i cpu
I am executing the next line inside the directory aruba-instant-mibs_6.5.4.3: # snmpwalk -v2c -cmy-key -O0X -mALL -M. 10.136.64.225
Output: Cannot adopt OID in ARUBA-MIB, Cannot adopt OID in WLSR-AP-MIB, Cannot adopt OID in AI-AP-MIB,... and at the end, I get the same result I send you here yesterday, in the aruba.txt file.
If I execute the command piped with grep -i cpu, there are no matches.