All MIBs › CTRON-BRIDGE-MIB › ctPvstStpProtocolSpecification
ctPvstStpProtocolSpecification
Module: CTRON-BRIDGE-MIB
OID (symbolic): CTRON-BRIDGE-MIB::ctPvstStpProtocolSpecification
OID (numeric): 1.3.6.1.4.1.52.4.1.2.3.2.2.5.1.2
Node type: OBJECT-TYPE
Type: INTEGER
Access: read-only
Description: An indication of what version of the Spanning Tree Protocol is being run. The value 'decLb100(2)' indicates the DEC LANbridge 100 Spanning Tree protocol. IEEE 802.1d implementations will return 'ieee8021d(3)'. If future versions of the IEEE Spanning Tree Protocol are released that are incompatible with the current version a new value will be defined.
What is ctPvstStpProtocolSpecification?
This read-only enumerated integer reports which Spanning Tree Protocol version this particular PVST instance is actually running: unknown(1), decLb100(2) for DEC LANbridge 100, or ieee8021d(3) for IEEE 802.1D implementations. An administrator checks this per-VLAN value to confirm that each PVST instance negotiated the expected protocol version, which matters when troubleshooting interoperability between mixed legacy and standards-based equipment on different VLANs. For example, if one VLAN's tree unexpectedly shows decLb100(2) while others show ieee8021d(3), the admin knows that VLAN is interoperating with an older DEC bridge and may need special handling.
Examples
Walk all instances (SNMPv2c):
snmpwalk -v2c -c public <target> 1.3.6.1.4.1.52.4.1.2.3.2.2.5.1.2 snmpwalk -v2c -c public <target> CTRON-BRIDGE-MIB::ctPvstStpProtocolSpecification
Get a specific instance (index 1):
snmpget -v2c -c public <target> 1.3.6.1.4.1.52.4.1.2.3.2.2.5.1.2.1 snmpget -v2c -c public <target> CTRON-BRIDGE-MIB::ctPvstStpProtocolSpecification.1
Start monitoring Cabletron/Enterasys network switch (bridge/spanning tree) with a free 30-day trial of IPNetwork Monitor. Create custom SNMP monitor using the CTRON-BRIDGE-MIB::ctPvstStpProtocolSpecification OID value, configure state conditions and alerts, and monitor any Cabletron/Enterasys network switch (bridge/spanning tree) from a single console.
OID Breakdown
Upper-level ancestors (11 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 |
| 1.3.6.1.4.1.52 | cabletron | Cabletron-MIB |
| 1.3.6.1.4.1.52.4 | mibs | CTRON-AP3000-MIB |
| 1.3.6.1.4.1.52.4.1 | ctron | CTRON-MIB-NAMES |
| 1.3.6.1.4.1.52.4.1.2 | ctDataLink | CTRON-MIB-NAMES |
| 1.3.6.1.4.1.52.4.1.2.3 | ctBridge | CTRON-MIB-NAMES |
| Numeric OID | Name | Module |
|---|---|---|
| 1.3.6.1.4.1.52.4.1.2.3.2 | ctBridgeStp | CTRON-BRIDGE-MIB |
| 1.3.6.1.4.1.52.4.1.2.3.2.2 | ctBridgePvst | CTRON-BRIDGE-MIB |
| 1.3.6.1.4.1.52.4.1.2.3.2.2.5 | ctPvstStpTable | CTRON-BRIDGE-MIB |
| 1.3.6.1.4.1.52.4.1.2.3.2.2.5.1 | ctPvstStpEntry | CTRON-BRIDGE-MIB |
| 1.3.6.1.4.1.52.4.1.2.3.2.2.5.1.2 | ctPvstStpProtocolSpecification | CTRON-BRIDGE-MIB |