All MIBs › IF-MIB › ifTableLastChange
ifTableLastChange
Module: IF-MIB
OID (symbolic): IF-MIB::ifTableLastChange
OID (numeric): 1.3.6.1.2.1.31.1.5
Node type: OBJECT-TYPE
Type: TimeTicks
Access: read-only
Description: The value of sysUpTime at the time of the last creation or deletion of an entry in the ifTable. If the number of entries has been unchanged since the last re-initialization of the local network management subsystem, then this object contains a zero value.
What is ifTableLastChange?
This object records the sysUpTime timestamp of the most recent addition or deletion of a row in the interface table (ifTable), or zero if the table has been unchanged since the agent last restarted. Network managers poll this single value to detect that the interface list has changed without having to walk the entire ifTable on every cycle. For example, a monitoring tool sees ifTableLastChange jump from 0 to a nonzero tick count right after a technician hot-adds a new line card or brings up a VLAN subinterface.
Examples
Walk all instances (SNMPv2c):
snmpwalk -v2c -c public <target> 1.3.6.1.2.1.31.1.5 snmpwalk -v2c -c public <target> IF-MIB::ifTableLastChange
Get a specific instance (index 1):
snmpget -v2c -c public <target> 1.3.6.1.2.1.31.1.5.1 snmpget -v2c -c public <target> IF-MIB::ifTableLastChange.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 | AXON-MIB |
| 1.3.6.1.2.1 | mib_2 | AXON-MIB |
| Numeric OID | Name | Module |
|---|---|---|
| 1.3.6.1.2.1.31 | ifMIB | IF-MIB |
| 1.3.6.1.2.1.31.1 | ifMIBObjects | IF-MIB |
| 1.3.6.1.2.1.31.1.5 | ifTableLastChange | IF-MIB |