IEEE8023-LAG-MIB

MIB Reference — IPNetwork Monitor · Updated September 09, 2026

All MIBsIEEE8023-LAG-MIB

Organization: IEEE 802.1 Working Group

Last Updated: 2016-10-12

Category: Network Interfaces, VLAN and Bridging

Description: IEEE 802.3ad Link Aggregation MIB for managing and monitoring LACP port channels, including aggregator configuration, port membership, and aggregation group status.

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What Is IEEE8023-LAG-MIB?

IEEE8023-LAG-MIB (sometimes referenced in lowercase as ieee8023-lag-mib) is a vendor-neutral standards-based MIB covering IEEE 802.3ad/802.1AX Link Aggregation (LACP), used to manage and monitor aggregated port channels on switches and routers. It exposes aggregator configuration such as MAC address, actor and partner system identifiers/priorities, and administrative/operational key values that define how ports are bundled into an aggregate. Monitoring focus is on link-aggregation group health: whether member ports are actively aggregated, whether the local (actor) and remote (partner) ends agree on system identity and keys, and when membership last changed - a software/link-state health check more than a hardware sensor reading. It depends on IF-MIB for the underlying ifIndex values of the physical ports that make up each aggregate. It is typically deployed on data-center and enterprise switches/routers using LACP for link redundancy and bandwidth aggregation.

IPNetwork Monitor allows you to monitor SNMP objects defined in IEEE8023-LAG-MIB. Use the built-in SNMP Monitoring Browser to explore available variables, view their current values and descriptions, and select the objects you want to monitor. You can then create SNMP monitors, configure thresholds, and receive alerts when monitored values change.

Supported Devices

  • vendor-neutral, standards-based MIB (IEEE 802.3ad/802.1AX)
  • switches and routers supporting LACP link aggregation

Monitoring Examples

An admin polls dot3adAggTable/dot3adAggEntry keyed by dot3adAggIndex to read dot3adAggMACAddress and compare dot3adAggActorSystemID/dot3adAggActorSystemPriority against dot3adAggPartnerSystemID/dot3adAggPartnerSystemPriority, confirming both ends of the LAG agree on identity. A mismatch between dot3adAggActorAdminKey and dot3adAggActorOperKey would flag a misconfigured aggregate, and a recent dot3adTablesLastChanged timestamp signals unexpected membership churn, such as a port dropping out of the bundle.

What Can Be Monitored

  • aggregator MAC address
  • actor/partner system ID and priority
  • aggregate vs individual port status
  • actor/partner administrative and operational keys
  • aggregation table change timestamp
Imported Objects

From IF-MIB

InterfaceIndex

From Q-BRIDGE-MIB

PortList

From SNMP-FRAMEWORK-MIB

SnmpAdminString

From SNMPv2-CONF

MODULE-COMPLIANCE
NOTIFICATION-GROUP
OBJECT-GROUP

From SNMPv2-SMI

Counter32
Counter64
Integer32
MODULE-IDENTITY
NOTIFICATION-TYPE
OBJECT-TYPE
TimeTicks

From SNMPv2-TC

DisplayString
MacAddress
TEXTUAL-CONVENTION
TruthValue

How to Use in IPNetwork Monitor

Example using dot3adAggDataRate OID:

Select a switch or router supporting IEEE 802.3ad/802.1AX (LACP) as the target host to create a monitor — the SNMP service should be up and running on it. Click New Monitor, then check SNMP Custom on the Favorites tab, click Next, and confirm the host. On the next page, click Select... to open the built-in SNMP MIB Browser and type dot3adAggDataRate into the Find box to locate it in the OID tree, selecting the specific row/instance you want to monitor since this is a table column, then select it and click OK. It reports the current combined data rate of this link aggregation group, in bits per second (the sum of each member link's rate). On the monitor's Main parameters page you can set the target's SNMP port (default 161), credentials, polling interval, and other settings — see the SNMP Monitor help for details. On the State conditions and Alerting tabs, configure when the monitor should change state and trigger an alert; since this is an Integer32-type OID, Value bounds is the most useful condition here — trigger an alert if the rate drops below the value expected for this bundle's configured member links, since a lower-than-expected rate indicates one or more links in the bundle are down. Click Finish to create the monitor; you can adjust any parameter later.
OIDs

RFC description

IEEE 802.3 Link Aggregation Control MIB (RFC 3580) for link aggregation groups.

Start monitoring Vendor-neutral IEEE 802.3ad/802.1AX standard (switches/routers supporting LACP) with a free 30-day trial of IPNetwork Monitor. Import MIBs, browse SNMP OIDs, create custom SNMP monitors, configure alerts, and monitor any SNMP-enabled network device from a single console.

Download IEEE8023-LAG-MIB