Q-BRIDGE-MIB :: dot1qFdbDynamicCount

MIB Reference — IPNetwork Monitor · Updated September 14, 2026

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dot1qFdbDynamicCount

Module: Q-BRIDGE-MIB

OID (symbolic): Q-BRIDGE-MIB::dot1qFdbDynamicCount

OID (numeric): 1.3.6.1.2.1.17.7.1.2.1.1.2

Node type: OBJECT-TYPE

Type: Counter32

Access: read-only

Description: The current number of dynamic entries in this Filtering Database.

What is dot1qFdbDynamicCount?

This is a running count of MAC addresses the device has dynamically learned and stored in its forwarding database. Engineers track this to monitor network learning activity and detect unusual address activity. A stable count indicates normal operation; rapid changes suggest network instability or new devices joining.

Examples

Walk all instances (SNMPv2c):

snmpwalk -v2c -c public <target> 1.3.6.1.2.1.17.7.1.2.1.1.2
snmpwalk -v2c -c public <target> Q-BRIDGE-MIB::dot1qFdbDynamicCount

Get a specific instance (index 1):

snmpget -v2c -c public <target> 1.3.6.1.2.1.17.7.1.2.1.1.2.1
snmpget -v2c -c public <target> Q-BRIDGE-MIB::dot1qFdbDynamicCount.1

Start monitoring IEEE 802.1Q Ethernet switches and bridges with a free 30-day trial of IPNetwork Monitor. Create custom SNMP monitor using the Q-BRIDGE-MIB::dot1qFdbDynamicCount OID value, configure state conditions and alerts, and monitor any IEEE 802.1Q Ethernet switches and bridges from a single console.

OID Breakdown

Upper-level ancestors (7 from the standard OID tree / other modules)
Numeric OIDNameModule
1isoLANART-AGENT
1.3orgAirPair-MIB
1.3.6dodAirPair-MIB
1.3.6.1internetAirPair-MIB
1.3.6.1.2mgmtAXON-MIB
1.3.6.1.2.1mib_2AXON-MIB
1.3.6.1.2.1.17dot1dBridgeBRIDGE-MIB
Numeric OIDNameModule
1.3.6.1.2.1.17.7qBridgeMIBQ-BRIDGE-MIB
1.3.6.1.2.1.17.7.1qBridgeMIBObjectsQ-BRIDGE-MIB
1.3.6.1.2.1.17.7.1.2dot1qTpQ-BRIDGE-MIB
1.3.6.1.2.1.17.7.1.2.1dot1qFdbTableQ-BRIDGE-MIB
1.3.6.1.2.1.17.7.1.2.1.1dot1qFdbEntryQ-BRIDGE-MIB
1.3.6.1.2.1.17.7.1.2.1.1.2dot1qFdbDynamicCountQ-BRIDGE-MIB

Module

This MIB depends on