NLB-MIB

MIB Reference — IPNetwork Monitor · Updated October 06, 2026

All MIBs › NLB-MIB

Organization: D-Link Corp.

Last Updated: 2009-02-11

Category: Switch Management

Description: Manages D-Link network load balancing configuration, session distribution, and virtual server pool status.

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What Is NLB-MIB?

NLB-MIB is a D-Link Corp. proprietary MIB managing Network Load Balancing (NLB) forwarding-table entries — the unicast/multicast MAC entries used by Microsoft NLB clustering to distribute traffic across cluster members. Its unicast-FDB table, keyed by MAC address, records egress ports and row status, and a multicast-FDB table records VLAN index, MAC address, egress ports, and row status. As a configuration MIB it lets an administrator confirm the switch is correctly flooding NLB cluster traffic to all cluster-member ports. It is deployed on D-Link managed switches supporting Microsoft NLB clusters. Engineers can download the NLB-MIB file directly to load it into their MIB browser.

IPNetwork Monitor allows you to monitor SNMP objects defined in NLB-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

  • D-Link managed switches (Network Load Balancing support)

Monitoring Examples

An administrator checks swNlbUnicastFdbEgressPorts to confirm NLB cluster traffic is correctly flooded to all cluster-member ports on a D-Link switch.

What Can Be Monitored

  • NLB unicast/multicast forwarding-table configuration
Imported Objects

From DLINK-ID-REC-MIB

dlink-common-mgmt

From Q-BRIDGE-MIB

PortList
VlanIndex

From SNMPv2-SMI

MODULE-IDENTITY
OBJECT-TYPE

From SNMPv2-TC

MacAddress
RowStatus
OIDs

RFC description

Vendor-private MIB for D-Link devices managing network load balancing, unicast MAC filtering, and port-based forwarding.

Start monitoring D-Link managed switch (Microsoft Network Load Balancing support) 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 NLB-MIB