All MIBs › ETH-SWITCH-MIB › rxFilterMACUnexp2ndPortDrops
rxFilterMACUnexp2ndPortDrops
Module: ETH-SWITCH-MIB
OID (symbolic): ETH-SWITCH-MIB::rxFilterMACUnexp2ndPortDrops
OID (numeric): 1.3.6.1.4.1.208.39.4.2.1.45
Node type: OBJECT-TYPE
Type: Counter
Access: read-only
Description: MAC address has been moved from one port to another
What is rxFilterMACUnexp2ndPortDrops?
Counts frames dropped because the source MAC address was previously learned on a different port and has now unexpectedly reappeared on this one, tripping the switch's MAC-movement filter. Frequent increments can indicate a network loop, a duplicated MAC address, or a device that was physically moved without its old entry aging out yet.
Examples
Walk all instances (SNMPv2c):
snmpwalk -v2c -c public <target> 1.3.6.1.4.1.208.39.4.2.1.45 snmpwalk -v2c -c public <target> ETH-SWITCH-MIB::rxFilterMACUnexp2ndPortDrops
Get a specific instance (index 1):
snmpget -v2c -c public <target> 1.3.6.1.4.1.208.39.4.2.1.45.1 snmpget -v2c -c public <target> ETH-SWITCH-MIB::rxFilterMACUnexp2ndPortDrops.1
Start monitoring Ethernet switch with port/VLAN management (vendor not confirmed) with a free 30-day trial of IPNetwork Monitor. Create custom SNMP monitor using the ETH-SWITCH-MIB::rxFilterMACUnexp2ndPortDrops OID value, configure state conditions and alerts, and monitor any Ethernet switch with port/VLAN management (vendor not confirmed) from a single console.
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 |
| 1.3.6.1.4 | private | AirPair-MIB |
| 1.3.6.1.4.1 | enterprises | AirPair-MIB |
| 1.3.6.1.4.1.208 | scanet | SCANET-MIB |
| Numeric OID | Name | Module |
|---|---|---|
| 1.3.6.1.4.1.208.39 | ethSwitch | ETH-SWITCH-MIB |
| 1.3.6.1.4.1.208.39.4 | statistic | ETH-SWITCH-MIB |
| 1.3.6.1.4.1.208.39.4.2 | rxStatTable | ETH-SWITCH-MIB |
| 1.3.6.1.4.1.208.39.4.2.1 | rxStatEntry | ETH-SWITCH-MIB |
| 1.3.6.1.4.1.208.39.4.2.1.45 | rxFilterMACUnexp2ndPortDrops | ETH-SWITCH-MIB |