DGS3612-L2MGMT-MIB

MIB Reference — IPNetwork Monitor · Updated October 05, 2026

All MIBs › DGS3612-L2MGMT-MIB

Last Updated: 2000-07-15

Category: Technology: Switching/L2, Vendor: D-Link

Description: L2 management MIB for D-Link DGS-3612 12-port Gigabit switch covering VLANs, STP, and L2 management features.

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What Is DGS3612-L2MGMT-MIB?

DGS3612-L2MGMT-MIB is a D-Link proprietary MIB for the DGS-3612 12-port Gigabit Layer 2/3 switch that manages Layer 2 switching features, centered on VLAN configuration alongside broader L2 management functions like spanning tree. It exposes a VLAN table with per-VLAN name, type, and member/tagged/untagged/forbidden port-mask objects, letting an administrator see exactly how each VLAN's port membership is provisioned on the switch. Its monitoring role is chiefly configuration verification rather than hardware telemetry: comparing swL2VlanCurrentTaggedPorts/swL2VlanCurrentUntaggedPorts against the statically configured swL2VlanStaticPorts reveals whether dynamic protocols (like GVRP) have altered actual VLAN membership from what was intended. It complements the standard Q-BRIDGE-MIB/BRIDGE-MIB VLAN model with D-Link-specific extensions. It is deployed on D-Link DGS-3612 switches in enterprise or SMB wiring-closet/access-layer deployments. Network engineers evaluating or troubleshooting this functionality can download the DGS3612-L2MGMT-MIB file directly to load it into their MIB browser.

IPNetwork Monitor allows you to monitor SNMP objects defined in DGS3612-L2MGMT-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 DGS-3612 Gigabit Layer 2/3 switch

Monitoring Examples

An administrator would poll swL2VlanMemberPorts and swL2VlanName in swL2VlanTable/swL2VlanEntry to confirm which ports belong to a given VLAN and detect unauthorized changes. Comparing swL2VlanStaticTaggedPorts to swL2VlanCurrentTaggedPorts would reveal if a port's tagging state has drifted from the statically configured value, possibly due to a dynamic VLAN protocol. swL2VlanForbiddenPorts would be checked to confirm sensitive VLANs are still excluded from ports that should never carry that traffic, and swL2VlanAdvertisementState would show whether the VLAN is being advertised via GVRP.

What Can Be Monitored

  • VLAN membership per port
  • static vs. current tagged/untagged port state
  • forbidden port list per VLAN
  • VLAN advertisement (GVRP) state
  • VLAN type and naming
Imported Objects

From DLINK-ID-REC-MIB

AgentNotifyLevel

From RFC1155-SMI

Counter

From SNMPv2-SMI

Integer32
IpAddress
MODULE-IDENTITY
OBJECT-TYPE
TimeTicks

From SNMPv2-TC

DisplayString
RowStatus
TEXTUAL-CONVENTION

From SW36XXPRIMGMT-MIB

dgs3612OBJECT-IDENTITY

How to Use in IPNetwork Monitor

Example using swL2PortBufferFullDrops OID:

Select a D-Link DGS-3612 Gigabit Layer 2/3 switch 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 swL2PortBufferFullDrops 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. The total number of packets discarded while buffer full. 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 a Counter32-type OID, Value bounds is the most useful condition here — trigger an alert if the counter increases between polls, since a rising count of errors, failures, or discards often points to a real underlying problem. Click Finish to create the monitor; you can adjust any parameter later.
OIDs

RFC description

D-Link DGS-3612 Layer 2 management MIB for switch configuration including VLANs, port management, QoS, and spanning tree.

Start monitoring D-Link DGS-3612 Gigabit Layer 2/3 switch 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 DGS3612-L2MGMT-MIB