MODULES-MIB :: ethPortLastSourceAddr

MIB Reference — IPNetwork Monitor · Updated October 02, 2026

All MIBs › MODULES-MIB › ethPortLastSourceAddr

ethPortLastSourceAddr

Module: MODULES-MIB

OID (symbolic): MODULES-MIB::ethPortLastSourceAddr

OID (numeric): 1.3.6.1.4.1.81.12.3.1.1.11

Node type: OBJECT-TYPE

Type: OCTET STRING

Access: read-write

Description: Ethernet source address of the last readable frame received by this port. The value of this item may be set to 000000 (a string of 6 zeros) by a management console, but not to any other value.

What is ethPortLastSourceAddr?

Holds the 6-byte MAC source address of the last valid frame this port received, letting an admin see which device (or that a device changed) is currently feeding the port; the only write the management console is permitted to make is resetting it to six zero bytes, effectively clearing the recorded address.

Examples

Walk all instances (SNMPv2c):

snmpwalk -v2c -c public <target> 1.3.6.1.4.1.81.12.3.1.1.11
snmpwalk -v2c -c public <target> MODULES-MIB::ethPortLastSourceAddr

Get a specific instance (index 1):

snmpget -v2c -c public <target> 1.3.6.1.4.1.81.12.3.1.1.11.1
snmpget -v2c -c public <target> MODULES-MIB::ethPortLastSourceAddr.1

Set instance 1 (SNMPv2c):

snmpset -v2c -c private <target> 1.3.6.1.4.1.81.12.3.1.1.11.1 s <value>

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OID Breakdown

Upper-level ancestors (11 from the standard OID tree / other modules)
Numeric OIDNameModule
1isoLANART-AGENT
1.3orgAirPair-MIB
1.3.6dodAirPair-MIB
1.3.6.1internetAirPair-MIB
1.3.6.1.4privateAirPair-MIB
1.3.6.1.4.1enterprisesAirPair-MIB
1.3.6.1.4.1.81lannetGEN-MIB
1.3.6.1.4.1.81.12ethLANNET-MIB
1.3.6.1.4.1.81.12.3ethPortLANNET-MIB
1.3.6.1.4.1.81.12.3.1ethPortTableLANNET-MIB
1.3.6.1.4.1.81.12.3.1.1ethPortEntryLANNET-MIB
Numeric OIDNameModule
1.3.6.1.4.1.81.12.3.1.1.11ethPortLastSourceAddrMODULES-MIB