DGS3612G-L2MGMT-MIB

MIB Reference — IPNetwork Monitor · Updated October 05, 2026

All MIBs › DGS3612G-L2MGMT-MIB

Last Updated: 2000-07-15

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

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

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What Is DGS3612G-L2MGMT-MIB?

This is a vendor-specific MIB from D-Link for Layer 2 management on the DGS-3612G Gigabit switch, covering VLAN configuration and related switching features. It exposes VLAN definitions and their name, type, and per-port membership (tagged, untagged, static, and forbidden ports), giving a structural view of the switch's Layer 2 segmentation. Its monitoring value is mainly configuration-state visibility rather than fault/hardware telemetry: administrators check swL2VlanCurrentTaggedPorts/swL2VlanCurrentUntaggedPorts to confirm the switch's live VLAN port assignments match intended configuration, which helps diagnose connectivity problems caused by VLAN misconfiguration. It builds on standard bridge/VLAN concepts akin to the IEEE 802.1Q and IETF BRIDGE-MIB model, though implemented as a private D-Link structure. It is deployed on D-Link DGS-3612G switches in enterprise or campus wiring closets where VLAN segmentation is used to isolate traffic. Network engineers evaluating or troubleshooting this functionality can download the DGS3612G-L2MGMT-MIB file directly to load it into their MIB browser.

IPNetwork Monitor allows you to monitor SNMP objects defined in DGS3612G-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-3612G Gigabit Ethernet switch

Monitoring Examples

An admin walks swL2VlanTable/swL2VlanEntry, keyed by swL2VlanIndex, reading swL2VlanName and swL2VlanType to inventory configured VLANs, then compares swL2VlanStaticTaggedPorts/swL2VlanStaticPorts against the live swL2VlanCurrentTaggedPorts/swL2VlanCurrentUntaggedPorts to spot a port that hasn't picked up its intended VLAN membership after a config push. swL2VlanForbiddenPorts is checked to confirm a port meant to be excluded from a VLAN (e.g., for security segmentation) hasn't been accidentally added. swL2VlanAdvertisementState shows whether GVRP/VLAN advertisement is enabled on that VLAN, explaining unexpected VLAN propagation across trunk links.

What Can Be Monitored

  • VLAN name and type
  • VLAN static/tagged/untagged port membership
  • VLAN forbidden ports
  • current (operational) tagged/untagged port assignments
  • VLAN advertisement state
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

dgs3612gOBJECT-IDENTITY

How to Use in IPNetwork Monitor

Example using swL2PortBufferFullDrops OID:

Select a D-Link DGS-3612G Gigabit Ethernet 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

Layer 2 management for D-Link DGS3612G switch including VLANs, port management, QoS, and security.

Start monitoring D-Link DGS-3612G Gigabit Ethernet 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 DGS3612G-L2MGMT-MIB