All MIBs › DISMAN-EXPRESSION-MIB › expExpressionPrefix
expExpressionPrefix
Module: DISMAN-EXPRESSION-MIB
OID (symbolic): DISMAN-EXPRESSION-MIB::expExpressionPrefix
OID (numeric): 1.3.6.1.2.1.90.1.2.1.1.7
Node type: OBJECT-TYPE
Type: OBJECT IDENTIFIER
Access: read-only
Description: An object prefix to assist an application in determining the instance indexing to use in expValueTable, relieving the application of the need to scan the expObjectTable to determine such a prefix.
See expObjectTable for information on wildcarded objects.
If the expValueInstance portion of the value OID may be treated as a scalar (that is, normally, 0) the value of expExpressionPrefix is zero length, that is, no OID at all. Note that zero length implies a null OID, not the OID 0.0.
Otherwise, the value of expExpressionPrefix is the expObjectID value of any one of the wildcarded objects for the expression. This is sufficient, as the remainder, that is, the instance fragment relevant to instancing the values, must be the same for all wildcarded objects in the expression.
What is expExpressionPrefix?
Gives the OID prefix an application should use to interpret instance indexing in the value table for this expression, saving it from having to scan the object table itself; it's a zero-length OID when the result is a simple scalar.
Examples
Walk all instances (SNMPv2c):
snmpwalk -v2c -c public <target> 1.3.6.1.2.1.90.1.2.1.1.7 snmpwalk -v2c -c public <target> DISMAN-EXPRESSION-MIB::expExpressionPrefix
Get a specific instance (index 1):
snmpget -v2c -c public <target> 1.3.6.1.2.1.90.1.2.1.1.7.1 snmpget -v2c -c public <target> DISMAN-EXPRESSION-MIB::expExpressionPrefix.1
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OID Breakdown
Upper-level ancestors (6 from the standard OID tree / other modules)
| Numeric OID | Name | Module |
|---|---|---|
| 1 | iso | LANART-AGENT |
| 1.3 | org | AirPair-MIB |
| 1.3.6 | dod | AirPair-MIB |
| 1.3.6.1 | internet | AirPair-MIB |
| 1.3.6.1.2 | mgmt | APERTUS-NPG-MIB |
| 1.3.6.1.2.1 | mib_2 | AXON-MIB |
| Numeric OID | Name | Module |
|---|---|---|
| 1.3.6.1.2.1.90 | dismanExpressionMIB | DISMAN-EXPRESSION-MIB |
| 1.3.6.1.2.1.90.1 | dismanExpressionMIBObjects | DISMAN-EXPRESSION-MIB |
| 1.3.6.1.2.1.90.1.2 | expDefine | DISMAN-EXPRESSION-MIB |
| 1.3.6.1.2.1.90.1.2.1 | expExpressionTable | DISMAN-EXPRESSION-MIB |
| 1.3.6.1.2.1.90.1.2.1.1 | expExpressionEntry | DISMAN-EXPRESSION-MIB |
| 1.3.6.1.2.1.90.1.2.1.1.7 | expExpressionPrefix | DISMAN-EXPRESSION-MIB |