Update snmp models
First commit for fix global import. references #2223
Fix model
bal import printer. references #2223
Fix graph pages. closes #2224
Fix  import printer. references #2223
Fix  import printer. references #2223
Fix  import printer. references #2223
Fix  import printer. references #2223
Fix  import printer. references #2223
Fix  import printer. references #2223
Fix  import printer. references #2223
Fix  import printer. references #2223