Reference Guide

Introduction 27
The assignment of values for each OID prefix component can be illustrated by using a tree structure.
The following is an example of an OID assignment:
In the preceding example, the OID prefix for the Dell enterprise would be 1.3.6.1.4.1.674.
The numbers in boldface type show the categories and numbers that apply to Server Administrator.
All Server Administrator-defined OIDs consist of 1.3.6.1.4.1.674 followed by additional component values.
SNMP Security
SNMP version 1 has a very limited security mechanism. SNMP agents support the use of a community
string, which is configured at each SNMP agent and is passed as a part of all SNMP request messages.
There is no verification that the requester is actually a member of the specified community.
Because most system and network management data is not confidential, this limited security is
acceptable for Get types of requests. On the other hand, this security is not acceptable for Set types of
operations where an SNMP request could power off a system, reconfigure a redundant array of
independent disks (RAID) card, and so on. Some vendors have chosen not to support SNMP Set
operations for this reason. Server Administrator is able to support SNMP Set operations because its
SNMP agents implement a hash/digest mechanism to prevent unauthorized SNMP Set operations.
One limitation of this practice is that only server administrator-developed SNMP management
applications have the capability to support the hash/digest mechanism.
ROOT
CCITT(0)
ISO(1)
ORG(3)
DOD(6)
INTERNET(1)
MGMT(2)
MIB(1)
EXPERIMENTAL(3)
PRIVATE(4)
ENTERPRISES(1)
DELL(674)
SNMPv2(6)