org = 3
iso = 1
dod = 6
internet = 1
mgmt = 2
mib-2 = 1
private = 4
enterprises = 1
microsoft = 311printers = 43system = 1
sysDescr = 1
E01033
Figure 67: SNMP MIB tree
The top four levels of the hierarchy are fixed. These are:
● International Standards Organization (iso)
● Organization (org)
● Department of Defence (dod)
● Internet
Management (mgmt) is the main public branch. It defines network management parameters common to
devices from all vendors. Underneath the Management branch is MIB-II (mib-2), and beneath this are
branches for common management functions such as system management, printers, host resources, and
interfaces.
The private branch of the MIB tree contains branches for large organizations, organized under the
enterprises branch. This is not applicable to Alstom Grid.
5.3 SNMP MIB STRUCTURE FOR RSTP, DHP AND SHP
The Alstom Grid MIB uses three types of OID:
● sysDescr
● sysUpTime
● sysName
Address Name
0 CCITT
1 ISO
3 Org
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