TN-XSTP-MIB :: tnXstpPortStatsUnknown

MIB Reference — IPNetwork Monitor · Updated October 02, 2026

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tnXstpPortStatsUnknown

Module: TN-XSTP-MIB

OID (symbolic): TN-XSTP-MIB::tnXstpPortStatsUnknown

OID (numeric): 1.3.6.1.4.1.868.2.5.111.2.5.1.11

Node type: OBJECT-TYPE

Type: Integer32

Access: read-only

Description: The number of unkown BPDU's received on the port.

What is tnXstpPortStatsUnknown?

Count of BPDUs received on this port that the spanning-tree engine couldn't classify as a recognized MSTP/RSTP/STP/TCN type. A nonzero count can indicate interop issues with a non-standard or misbehaving neighbor device.

Examples

Walk all instances (SNMPv2c):

snmpwalk -v2c -c public <target> 1.3.6.1.4.1.868.2.5.111.2.5.1.11
snmpwalk -v2c -c public <target> TN-XSTP-MIB::tnXstpPortStatsUnknown

Get a specific instance (index 1):

snmpget -v2c -c public <target> 1.3.6.1.4.1.868.2.5.111.2.5.1.11.1
snmpget -v2c -c public <target> TN-XSTP-MIB::tnXstpPortStatsUnknown.1

Start monitoring Transition Networks managed Ethernet switch (RSTP/MSTP BPDU-guard/port-recovery status) with a free 30-day trial of IPNetwork Monitor. Create custom SNMP monitor using the TN-XSTP-MIB::tnXstpPortStatsUnknown OID value, configure state conditions and alerts, and monitor any Transition Networks managed Ethernet switch (RSTP/MSTP BPDU-guard/port-recovery status) from a single console.

OID Breakdown

Upper-level ancestors (9 from the standard OID tree / other modules)
Numeric OIDNameModule
1isoLANART-AGENT
1.3orgAirPair-MIB
1.3.6dodAirPair-MIB
1.3.6.1internetAirPair-MIB
1.3.6.1.4privateAirPair-MIB
1.3.6.1.4.1enterprisesAirPair-MIB
1.3.6.1.4.1.868transitionTRANSITION-SMI
1.3.6.1.4.1.868.2productsTRANSITION-SMI
1.3.6.1.4.1.868.2.5tnProductsTRANSITION-SMI
Numeric OIDNameModule
1.3.6.1.4.1.868.2.5.111tnXSTPMIBTN-XSTP-MIB
1.3.6.1.4.1.868.2.5.111.2tnXSTPMgmtObjectsTN-XSTP-MIB
1.3.6.1.4.1.868.2.5.111.2.5tnXstpPortStatsTableTN-XSTP-MIB
1.3.6.1.4.1.868.2.5.111.2.5.1tnXstpPortStatsEntryTN-XSTP-MIB
1.3.6.1.4.1.868.2.5.111.2.5.1.11tnXstpPortStatsUnknownTN-XSTP-MIB