IEEE8021-SPANNING-TREE-MIB :: ieee8021SpanningTreePriority

MIB Reference — IPNetwork Monitor · Updated October 05, 2026

All MIBs › IEEE8021-SPANNING-TREE-MIB › ieee8021SpanningTreePriority

ieee8021SpanningTreePriority

Module: IEEE8021-SPANNING-TREE-MIB

OID (symbolic): IEEE8021-SPANNING-TREE-MIB::ieee8021SpanningTreePriority

OID (numeric): 1.3.111.2.802.1.1.3.1.1.1.3

Node type: OBJECT-TYPE

Type: Integer32

Access: read-write

Description: The value of the write-able portion of the Bridge ID (i.e., the first two octets of the (8 octet long) Bridge ID). The other (last) 6 octets of the Bridge ID are given by the value of ieee8021BridgeBaseBridgeAddress. On Bridges supporting IEEE 802.1t or IEEE 802.1w, permissible values are 0-61440, in steps of 4096.

The value of this object MUST be retained across reinitializations of the management system.

What is ieee8021SpanningTreePriority?

The writable bridge-priority portion of this bridge's Spanning Tree bridge ID (paired with its MAC address to form the full ID); lowering this value, in steps of 4096 on 802.1t/802.1w bridges, makes a switch more likely to be elected root of the spanning tree.

Examples

Walk all instances (SNMPv2c):

snmpwalk -v2c -c public <target> 1.3.111.2.802.1.1.3.1.1.1.3
snmpwalk -v2c -c public <target> IEEE8021-SPANNING-TREE-MIB::ieee8021SpanningTreePriority

Get a specific instance (index 1):

snmpget -v2c -c public <target> 1.3.111.2.802.1.1.3.1.1.1.3.1
snmpget -v2c -c public <target> IEEE8021-SPANNING-TREE-MIB::ieee8021SpanningTreePriority.1

Set instance 1 (SNMPv2c):

snmpset -v2c -c private <target> 1.3.111.2.802.1.1.3.1.1.1.3.1 i <value>

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::ieee8021SpanningTreePriority 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
1.3.111.2.802.1.1.3.1.1ieee8021SpanningTreeTableIEEE8021-SPANNING-TREE-MIB
1.3.111.2.802.1.1.3.1.1.1ieee8021SpanningTreeEntryIEEE8021-SPANNING-TREE-MIB
1.3.111.2.802.1.1.3.1.1.1.3ieee8021SpanningTreePriorityIEEE8021-SPANNING-TREE-MIB