All MIBs › A3COM-SWITCHING-SYSTEMS-BRIDGE-MIB › a3ComSysBridgePortReceiveUnknownDiscards
a3ComSysBridgePortReceiveUnknownDiscards
Module: A3COM-SWITCHING-SYSTEMS-BRIDGE-MIB
OID (symbolic): A3COM-SWITCHING-SYSTEMS-BRIDGE-MIB::a3ComSysBridgePortReceiveUnknownDiscards
OID (numeric): 1.3.6.1.4.1.43.29.4.10.3.1.11
Node type: OBJECT-TYPE
Type: Counter
Access: read-only
Description: The number of frames discarded by the bridge port identified by this entry because the destination address was unknown. Note that this counter is only valid for backbone ports, and only when the bridge is operating in express mode.
What is a3ComSysBridgePortReceiveUnknownDiscards?
This counter (backbone ports only in express mode) drops frames with unknown destination MACs to prevent unnecessary forwarding. Engineers use it to optimize backbone performance by filtering unknown unicast at the edge. A high rate indicates poor MAC learning or transient devices.
Examples
Walk all instances (SNMPv2c):
snmpwalk -v2c -c public <target> 1.3.6.1.4.1.43.29.4.10.3.1.11 snmpwalk -v2c -c public <target> A3COM-SWITCHING-SYSTEMS-BRIDGE-MIB::a3ComSysBridgePortReceiveUnknownDiscards
Get a specific instance (index 1):
snmpget -v2c -c public <target> 1.3.6.1.4.1.43.29.4.10.3.1.11.1 snmpget -v2c -c public <target> A3COM-SWITCHING-SYSTEMS-BRIDGE-MIB::a3ComSysBridgePortReceiveUnknownDiscards.1
Start monitoring 3Com SuperStack switches (legacy) with a free 30-day trial of IPNetwork Monitor. Create custom SNMP monitor using the A3COM-SWITCHING-SYSTEMS-BRIDGE-MIB::a3ComSysBridgePortReceiveUnknownDiscards OID value, configure state conditions and alerts, and monitor any 3Com SuperStack switches (legacy) 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 |
| 1.3.6.1.4.1.43 | a3Com | A3COM-BRIDGE-R3-MIB |
| Numeric OID | Name | Module |
|---|---|---|
| 1.3.6.1.4.1.43.29 | switchingSystemsMibs | A3COM-SWITCHING-SYSTEMS-BRIDGE-MIB |
| 1.3.6.1.4.1.43.29.4 | a3ComSwitchingSystemsMib | A3COM-SWITCHING-SYSTEMS-BRIDGE-MIB |
| 1.3.6.1.4.1.43.29.4.10 | a3ComSysBridge | A3COM-SWITCHING-SYSTEMS-BRIDGE-MIB |
| 1.3.6.1.4.1.43.29.4.10.3 | a3ComSysBridgePortTable | A3COM-SWITCHING-SYSTEMS-BRIDGE-MIB |
| 1.3.6.1.4.1.43.29.4.10.3.1 | a3ComSysBridgePortEntry | A3COM-SWITCHING-SYSTEMS-BRIDGE-MIB |
| 1.3.6.1.4.1.43.29.4.10.3.1.11 | a3ComSysBridgePortReceiveUnknownDiscards | A3COM-SWITCHING-SYSTEMS-BRIDGE-MIB |