title: SNMP: Why do I get two different memory values?
body: <p>I'm trying to figure out how to extract CPU, memory, etc. from a Cisco device with SNMP.</p>
  
  <p>On Cisco's website I found this OID: .1.3.6.1.4.1.9.9.48.1.1.1.6 (= ciscoMemoryPoolFree)
  <a href="http://tools.cisco.com/Support/SNMP/do/BrowseOID.do?objectInput=1.3.6.1.4.1.9.9.109.1.1.1.1.6&amp;translate=Translate&amp;submitValue=SUBMIT&amp;submitClicked=true" rel="nofollow">http://tools.cisco.com/Support/SNMP/do/BrowseOID.do?objectInput=1.3.6.1.4.1.9.9.109.1.1.1.1.6&amp;translate=Translate&amp;submitValue=SUBMIT&amp;submitClicked=true</a></p>
  
  <p>I found out it's a "scalar object" and I can read two values from it.
  .1.3.6.1.4.1.9.9.48.1.1.1.6.1: 35619504
  .1.3.6.1.4.1.9.9.48.1.1.1.6.2: 2516216</p>
  
  <p>Why is there two different numbers for the free memory?</p>