All MIBs › A3COM-SWITCHING-SYSTEMS-BRIDGE-MIB › a3ComSysBridgePortTransmitBlockedDiscards
a3ComSysBridgePortTransmitBlockedDiscards
Module: A3COM-SWITCHING-SYSTEMS-BRIDGE-MIB
OID (symbolic): A3COM-SWITCHING-SYSTEMS-BRIDGE-MIB::a3ComSysBridgePortTransmitBlockedDiscards
OID (numeric): 1.3.6.1.4.1.43.29.4.10.3.1.15
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 transmitting bridge port was not in the 'forwarding' state.
What is a3ComSysBridgePortTransmitBlockedDiscards?
This counter tracks frames dropped at egress because the outgoing port is not in forwarding state (STP blocked). Engineers use it to validate STP is preventing loops and diagnose blocked paths impacting traffic delivery. Rising values after topology changes are expected.
Examples
Walk all instances (SNMPv2c):
snmpwalk -v2c -c public <target> 1.3.6.1.4.1.43.29.4.10.3.1.15 snmpwalk -v2c -c public <target> A3COM-SWITCHING-SYSTEMS-BRIDGE-MIB::a3ComSysBridgePortTransmitBlockedDiscards
Get a specific instance (index 1):
snmpget -v2c -c public <target> 1.3.6.1.4.1.43.29.4.10.3.1.15.1 snmpget -v2c -c public <target> A3COM-SWITCHING-SYSTEMS-BRIDGE-MIB::a3ComSysBridgePortTransmitBlockedDiscards.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::a3ComSysBridgePortTransmitBlockedDiscards 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 |
| 1.3.6.1.4.1.43.29.4.10.3.1.15 | a3ComSysBridgePortTransmitBlockedDiscards | A3COM-SWITCHING-SYSTEMS-BRIDGE-MIB |