Lets assume that we make a walk for the cpu usage OID 188.8.131.52.4.1.2011.5.25.31.184.108.40.206.5. Below you have the output. But how do you know the value for which component it is?
You can use another OID in order to find out. OID 220.127.116.11.18.104.22.168.22.214.171.124 (entPhysicalName) and make a walk. You will get the following output. As you can see index 67371017 represents LPU Board 1.