IEEE8021-SPANNING-TREE-MIB :: ieee8021SpanningTreePortDesignatedBridge

MIB Reference — IPNetwork Monitor · Updated October 05, 2026

All MIBs › IEEE8021-SPANNING-TREE-MIB › ieee8021SpanningTreePortDesignatedBridge

ieee8021SpanningTreePortDesignatedBridge

Module: IEEE8021-SPANNING-TREE-MIB

OID (symbolic): IEEE8021-SPANNING-TREE-MIB::ieee8021SpanningTreePortDesignatedBridge

OID (numeric): 1.3.111.2.802.1.1.3.1.2.1.9

Node type: OBJECT-TYPE

Type: BridgeId

Access: read-only

Description: The Bridge Identifier of the Bridge that this port considers to be the Designated Bridge for this port's segment.

What is ieee8021SpanningTreePortDesignatedBridge?

The bridge ID of whichever bridge this port currently considers the Designated Bridge for its attached segment.

Examples

Walk all instances (SNMPv2c):

snmpwalk -v2c -c public <target> 1.3.111.2.802.1.1.3.1.2.1.9
snmpwalk -v2c -c public <target> IEEE8021-SPANNING-TREE-MIB::ieee8021SpanningTreePortDesignatedBridge

Get a specific instance (index 1):

snmpget -v2c -c public <target> 1.3.111.2.802.1.1.3.1.2.1.9.1
snmpget -v2c -c public <target> IEEE8021-SPANNING-TREE-MIB::ieee8021SpanningTreePortDesignatedBridge.1

Start monitoring Vendor-neutral IEEE 802.1D/Q standard (Ethernet bridge or switch running STP) with a free 30-day trial of IPNetwork Monitor. Create custom SNMP monitor using the IEEE8021-SPANNING-TREE-MIB::ieee8021SpanningTreePortDesignatedBridge OID value, configure state conditions and alerts, and monitor any Vendor-neutral IEEE 802.1D/Q standard (Ethernet bridge or switch running STP) from a single console.

OID Breakdown

Upper-level ancestors (3 from the standard OID tree / other modules)
Numeric OIDNameModule
1isoLANART-AGENT
1.3orgAirPair-MIB
1.3.111.2.802.1.1ieee802dot1mibsIEEE8021-TC-MIB
Numeric OIDNameModule
1.3.111.2.802.1.1.3ieee8021SpanningTreeMibIEEE8021-SPANNING-TREE-MIB
1.3.111.2.802.1.1.3.1ieee8021SpanningTreeObjectsIEEE8021-SPANNING-TREE-MIB
1.3.111.2.802.1.1.3.1.2ieee8021SpanningTreePortTableIEEE8021-SPANNING-TREE-MIB
1.3.111.2.802.1.1.3.1.2.1ieee8021SpanningTreePortEntryIEEE8021-SPANNING-TREE-MIB
1.3.111.2.802.1.1.3.1.2.1.9ieee8021SpanningTreePortDesignatedBridgeIEEE8021-SPANNING-TREE-MIB