ACMIB :: bridgeDomainMaxMessageAge

MIB Reference — IPNetwork Monitor · Updated September 14, 2026

All MIBsACMIBbridgeDomainMaxMessageAge

bridgeDomainMaxMessageAge

Module: ACMIB

OID (symbolic): ACMIB::bridgeDomainMaxMessageAge

OID (numeric): 1.3.6.1.4.1.1751.2.18.5.9.1.9

Node type: OBJECT-TYPE

Type: Integer32

Access: read-only

Description: The maximum age of Spanning Tree Protocol information learned from the network on any port before it is discarded, in units of hundredths of a second. This is the actual value that this bridge is currently using.

What is bridgeDomainMaxMessageAge?

This OID stores the maximum age (in hundredths of seconds) that spanning tree protocol messages learned from the network remain valid before being discarded. Engineers understand this setting to diagnose stale topology information problems and convergence delays caused by aged-out STP data. A value of 2000 (20 seconds) means any STP information older than that interval is automatically expired.

Examples

Walk all instances (SNMPv2c):

snmpwalk -v2c -c public <target> 1.3.6.1.4.1.1751.2.18.5.9.1.9
snmpwalk -v2c -c public <target> ACMIB::bridgeDomainMaxMessageAge

Get a specific instance (index 1):

snmpget -v2c -c public <target> 1.3.6.1.4.1.1751.2.18.5.9.1.9.1
snmpget -v2c -c public <target> ACMIB::bridgeDomainMaxMessageAge.1

Start monitoring Lucent/Nortel Access Concentrator (legacy) with a free 30-day trial of IPNetwork Monitor. Create custom SNMP monitor using the ACMIB::bridgeDomainMaxMessageAge OID value, configure state conditions and alerts, and monitor any Lucent/Nortel Access Concentrator (legacy) from a single console.

OID Breakdown

Upper-level ancestors (6 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
Numeric OIDNameModule
1.3.6.1.4.1.1751lucentACMIB
1.3.6.1.4.1.1751.2mibsACMIB
1.3.6.1.4.1.1751.2.18acMIBACMIB
1.3.6.1.4.1.1751.2.18.5intfConfigACMIB
1.3.6.1.4.1.1751.2.18.5.9bridgeDomainTableACMIB
1.3.6.1.4.1.1751.2.18.5.9.1bridgeDomainEntryACMIB
1.3.6.1.4.1.1751.2.18.5.9.1.9bridgeDomainMaxMessageAgeACMIB