All MIBs › NORTEL-NETWORKS-RAPID-SPANNING-TREE-MIB › nnRstDot1wPortInvalidTcnBpduRxCount
nnRstDot1wPortInvalidTcnBpduRxCount
Module: NORTEL-NETWORKS-RAPID-SPANNING-TREE-MIB
OID (symbolic): NORTEL-NETWORKS-RAPID-SPANNING-TREE-MIB::nnRstDot1wPortInvalidTcnBpduRxCount
OID (numeric): 1.3.6.1.4.1.45.5.4.1.2.2.1.18
Node type: OBJECT-TYPE
Type: Counter32
Access: read-only
Description: The number of invalid TCN BPDUs that have been received on this Port. A Trap is generated on the occurence of this event.
What is nnRstDot1wPortInvalidTcnBpduRxCount?
Counts malformed Topology Change Notification BPDUs received on this port, also firing a trap each time, which an admin treats as a sign of a misbehaving or misconfigured neighbor bridge.
Examples
Walk all instances (SNMPv2c):
snmpwalk -v2c -c public <target> 1.3.6.1.4.1.45.5.4.1.2.2.1.18 snmpwalk -v2c -c public <target> NORTEL-NETWORKS-RAPID-SPANNING-TREE-MIB::nnRstDot1wPortInvalidTcnBpduRxCount
Get a specific instance (index 1):
snmpget -v2c -c public <target> 1.3.6.1.4.1.45.5.4.1.2.2.1.18.1 snmpget -v2c -c public <target> NORTEL-NETWORKS-RAPID-SPANNING-TREE-MIB::nnRstDot1wPortInvalidTcnBpduRxCount.1
Start monitoring Nortel Networks (later Avaya) enterprise switch (RSTP) with a free 30-day trial of IPNetwork Monitor. Create custom SNMP monitor using the NORTEL-NETWORKS-RAPID-SPANNING-TREE-MIB::nnRstDot1wPortInvalidTcnBpduRxCount OID value, configure state conditions and alerts, and monitor any Nortel Networks (later Avaya) enterprise switch (RSTP) from a single console.
OID Breakdown
Upper-level ancestors (8 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 |
| 1.3.6.1.4.1.45 | synoptics | CMU-MIB |
| 1.3.6.1.4.1.45.5 | bayStackMibs | SYNOPTICS-ROOT-MIB |
| Numeric OID | Name | Module |
|---|---|---|
| 1.3.6.1.4.1.45.5.4 | nnRapidSpanningTreeMib | NORTEL-NETWORKS-RAPID-SPANNING-TREE-MIB |
| 1.3.6.1.4.1.45.5.4.1 | nnRstObjects | NORTEL-NETWORKS-RAPID-SPANNING-TREE-MIB |
| 1.3.6.1.4.1.45.5.4.1.2 | nnRstDot1w | NORTEL-NETWORKS-RAPID-SPANNING-TREE-MIB |
| 1.3.6.1.4.1.45.5.4.1.2.2 | nnRstDot1wPortTable | NORTEL-NETWORKS-RAPID-SPANNING-TREE-MIB |
| 1.3.6.1.4.1.45.5.4.1.2.2.1 | nnRstDot1wPortEntry | NORTEL-NETWORKS-RAPID-SPANNING-TREE-MIB |
| 1.3.6.1.4.1.45.5.4.1.2.2.1.18 | nnRstDot1wPortInvalidTcnBpduRxCount | NORTEL-NETWORKS-RAPID-SPANNING-TREE-MIB |