DGS-3420-28TC-L2MGMT-MIB

MIB Reference — IPNetwork Monitor · Updated October 05, 2026

All MIBs › DGS-3420-28TC-L2MGMT-MIB

Organization: D-Link Corp.

Last Updated: 2010-11-15

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

Description: L2 management MIB for D-Link DGS-3420-28TC 28-port combo switch covering VLANs, STP, and L2 switching management.

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What Is DGS-3420-28TC-L2MGMT-MIB?

DGS-3420-28TC-L2MGMT-MIB is a D-Link proprietary MIB defining Layer 2 network management information for the DGS-3420-28TC managed switch. Its objects cover front-panel LED status, system reboot/IP/subnet-mask/gateway control, management VLAN ID, IGMP snooping enable, statistics-counter reset, SNMP authentication-trap enable, RMON state, IP auto-configuration, MAC-notification state/history-size/interval, LLDP state and forwarding, asymmetric-VLAN state, multicast-VLAN IGMP-snooping state, VLAN-trunk state, and topology-change/link-change/new-root alarm notifications. As a configuration/status MIB it lets an administrator confirm core Layer 2 management settings — management VLAN, IGMP snooping, LLDP — are configured as intended on the switch. It is deployed on the D-Link DGS-3420-28TC managed switch. Engineers can download the DGS-3420-28TC-L2MGMT-MIB file directly to load it into their MIB browser.

IPNetwork Monitor allows you to monitor SNMP objects defined in DGS-3420-28TC-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-3420-28TC managed switch

Monitoring Examples

An administrator checks swL2DevCtrlManagementVlanId and swL2DevCtrlIGMPSnooping to confirm core Layer 2 management settings are configured correctly on a D-Link DGS-3420-28TC switch.

What Can Be Monitored

  • management VLAN, IGMP snooping, and LLDP configuration
  • spanning-tree topology-change alarms
Imported Objects

From DLINK-ID-REC-MIB

AgentNotifyLevel

From IEEE8021-CFM-MIB

dot1agCfmMaIndexOBJECT-TYPE
dot1agCfmMdIndexOBJECT-TYPE
dot1agCfmMepIdentifierOBJECT-TYPE

From PORT-SECURITY-MIB

swPortSecPortIndexOBJECT-TYPE

From RFC1155-SMI

Counter

From SNMPv2-SMI

Integer32
IpAddress
MODULE-IDENTITY
OBJECT-TYPE
TimeTicks
Unsigned32

From SNMPv2-TC

DisplayString
RowStatus
TEXTUAL-CONVENTION
TruthValue

From SWDGS3420PRIMGMT-MIB

dlink-Dgs3420Proj-Dgs3420-28TC
OIDs

RFC description

D-Link DGS-3420 Layer 2 management including VLAN, STP, port isolation, DHCP relay, multicast filtering, and CFM support.

Start monitoring D-Link DGS-3420-28TC managed 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 DGS-3420-28TC-L2MGMT-MIB