All MIBs › MODULES-MIB › ethPortSourceAddrChanges
ethPortSourceAddrChanges
Module: MODULES-MIB
OID (symbolic): MODULES-MIB::ethPortSourceAddrChanges
OID (numeric): 1.3.6.1.4.1.81.12.3.1.1.34
Node type: OBJECT-TYPE
Type: Counter
Access: read-only
Description: This counter is incremented by one for each time that the last source address of frames entering this port has changed. This may indicate whether a link is connected to a single DTE or another multi-user segment. The approximate minimum time for rollover of this counter is 81 hours. This object is a Repeater MIB counter.
What is ethPortSourceAddrChanges?
Counts how often the MAC source address seen on frames entering this port changes, which helps an admin tell whether the port feeds a single dedicated device (a steady address) or a shared multi-user segment/hub (frequently changing addresses); it rolls over roughly every 81 hours under heavy address churn.
Examples
Walk all instances (SNMPv2c):
snmpwalk -v2c -c public <target> 1.3.6.1.4.1.81.12.3.1.1.34 snmpwalk -v2c -c public <target> MODULES-MIB::ethPortSourceAddrChanges
Get a specific instance (index 1):
snmpget -v2c -c public <target> 1.3.6.1.4.1.81.12.3.1.1.34.1 snmpget -v2c -c public <target> MODULES-MIB::ethPortSourceAddrChanges.1
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OID Breakdown
Upper-level ancestors (11 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 |
| 1.3.6.1.4.1.81 | lannet | GEN-MIB |
| 1.3.6.1.4.1.81.12 | eth | LANNET-MIB |
| 1.3.6.1.4.1.81.12.3 | ethPort | LANNET-MIB |
| 1.3.6.1.4.1.81.12.3.1 | ethPortTable | LANNET-MIB |
| 1.3.6.1.4.1.81.12.3.1.1 | ethPortEntry | LANNET-MIB |
| Numeric OID | Name | Module |
|---|---|---|
| 1.3.6.1.4.1.81.12.3.1.1.34 | ethPortSourceAddrChanges | MODULES-MIB |