All MIBs › RMON2-MIB › addressMapPhysicalAddress
addressMapPhysicalAddress
Module: RMON2-MIB
OID (symbolic): RMON2-MIB::addressMapPhysicalAddress
OID (numeric): 1.3.6.1.2.1.16.13.5.1.4
Node type: OBJECT-TYPE
Type: OCTET STRING
Access: read-only
Description: The last source physical address on which the associated network address was seen. If the protocol of the associated network address was encapsulated inside of a network-level or higher protocol, this will be the address of the next-lower protocol with the addressRecognitionCapable bit enabled and will be formatted as specified for that protocol.
What is addressMapPhysicalAddress?
This byte string holds the last MAC address (hardware address) where the network address was seen on the segment. Engineers use it to track which physical device last used an IP address, helping detect MAC spoofing or IP conflicts. For instance, if two devices claim the same IP but show different MAC addresses, this field changes rapidly when each one sends traffic.
Examples
Walk all instances (SNMPv2c):
snmpwalk -v2c -c public <target> 1.3.6.1.2.1.16.13.5.1.4 snmpwalk -v2c -c public <target> RMON2-MIB::addressMapPhysicalAddress
Get a specific instance (index 1):
snmpget -v2c -c public <target> 1.3.6.1.2.1.16.13.5.1.4.1 snmpget -v2c -c public <target> RMON2-MIB::addressMapPhysicalAddress.1
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OID Breakdown
Upper-level ancestors (7 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 |
| 1.3.6.1.2.1.16 | rmon | LBHUB-BOOM-MIB |
| Numeric OID | Name | Module |
|---|---|---|
| 1.3.6.1.2.1.16.13 | addressMap | RMON2-MIB |
| 1.3.6.1.2.1.16.13.5 | addressMapTable | RMON2-MIB |
| 1.3.6.1.2.1.16.13.5.1 | addressMapEntry | RMON2-MIB |
| 1.3.6.1.2.1.16.13.5.1.4 | addressMapPhysicalAddress | RMON2-MIB |