All MIBs › CNT21-MIB › cnt2IfIndex
cnt2IfIndex
Module: CNT21-MIB
OID (symbolic): CNT21-MIB::cnt2IfIndex
OID (numeric): 1.3.6.1.4.1.333.2.1.2.2.1.2
Node type: OBJECT-TYPE
Type: Integer32
Access: read-only
Description: A unique value for each interface. Its value ranges between 1 and the value of cnt2IfNumber. The value for each interface must remain constant at least from one re-initialization of the entity's network management system to the next re- initialization.
What is cnt2IfIndex?
This Integer32 is a unique identifier for one interface, with values ranging from 1 up to cnt2IfNum, that stays constant across normal operation until the entity's management subsystem is reinitialized. An administrator depends on that stability to keep polling the same physical port's counters over time without the index shifting underneath them. For example, cnt2IfIndex value 2 on slot 3 still refers to the same port tomorrow as it did today, unless the device has been reinitialized in between.
Examples
Walk all instances (SNMPv2c):
snmpwalk -v2c -c public <target> 1.3.6.1.4.1.333.2.1.2.2.1.2 snmpwalk -v2c -c public <target> CNT21-MIB::cnt2IfIndex
Get a specific instance (index 1):
snmpget -v2c -c public <target> 1.3.6.1.4.1.333.2.1.2.2.1.2.1 snmpget -v2c -c public <target> CNT21-MIB::cnt2IfIndex.1
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OID Breakdown
Upper-level ancestors (9 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 |
| 1.3.6.1.4 | private | AirPair-MIB |
| 1.3.6.1.4.1 | enterprises | AirPair-MIB |
| 1.3.6.1.4.1.333 | cnt | CNT2-MIB |
| 1.3.6.1.4.1.333.2 | cnt2 | CNT2-MIB |
| 1.3.6.1.4.1.333.2.1 | cnt2Mib2 | CNT2-MIB |
| Numeric OID | Name | Module |
|---|---|---|
| 1.3.6.1.4.1.333.2.1.2 | cnt2Interfaces | CNT21-MIB |
| 1.3.6.1.4.1.333.2.1.2.2 | cnt2IfTable | CNT21-MIB |
| 1.3.6.1.4.1.333.2.1.2.2.1 | cnt2IfEntry | CNT21-MIB |
| 1.3.6.1.4.1.333.2.1.2.2.1.2 | cnt2IfIndex | CNT21-MIB |