
This is the mib root:

".1.3.6.1.4.1.20542"

Each OID is identified uniquely in the MIB file and in spreadsheet for convenience, 
One mib element will look like that


{{ipAddress OBJECT-TYPE}}
{{  SYNTAX IpAddress}}
{{  MAX-ACCESS read-only}}
{{  STATUS current}}
{{      DESCRIPTION ""}}
=======> {{  ::= { home 301 }}}
 
 
it correspond in the spreasheet to
    {".9.1.1.1.301.0", OIDIPADDRESS, "ipAddress",},


To access this field using a mib bowser, the full address needs to be provided
MIB Root + OID
Example using a standard linux tool will therefore be:


to display full mib content:
snmpwalk -m+PATH_TO_MIB/SIERRA-MIB.txt -v2c -c public 192.168.13.31 .1.3.6.1.4.1.20542
Display one value from, the MIB:
snmpwalk -m+PATH_TO_MIB/SIERRA-MIB.txt -v2c -c public 192.168.13.31 .1.3.6.1.4.1.20542.9.1.1.1.4.0
SIERRA-MIB::aleosSWVer.0 = STRING: 4.15.0.relay

