DGS3000-26TC-L3MGMT-MIB

MIB Reference — IPNetwork Monitor · Updated October 05, 2026

All MIBs › DGS3000-26TC-L3MGMT-MIB

Last Updated: 2012-05-23

Category: Technology: Routing/L3, Vendor: D-Link

Description: L3 management MIB for D-Link DGS-3000-26TC switch covering routing protocols and Layer 3 management objects.

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What Is DGS3000-26TC-L3MGMT-MIB?

This is a D-Link proprietary enterprise MIB defining the Layer 3 management information structure for the DGS-3000-26TC switch. It covers DVMRP (Distance Vector Multicast Routing Protocol) interface configuration and statistics as well as OSPF ECMP parameters and route preference settings, giving broad coverage of the switch's Layer 3 multicast and unicast routing features. As a monitoring module it lets an administrator confirm DVMRP interface operational status and error counters, and OSPF ECMP behavior, which reflects the software-level health of the routing control plane rather than physical hardware sensors. It depends on the switch's companion L2MGMT and system/product MIBs for a full picture, and conceptually parallels standard multicast routing (DVMRP) and OSPF concepts. It is deployed in enterprise/campus network cores where DGS-3000-26TC switches provide Layer 3 routing and multicast forwarding, monitored via an SNMP-based NMS. Engineers can download the DGS3000-26TC-L3MGMT-MIB file directly to load it into their MIB browser.

IPNetwork Monitor allows you to monitor SNMP objects defined in DGS3000-26TC-L3MGMT-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-3000-26TC Layer 3 managed switch

Monitoring Examples

Polling the swL3dvmrpInterfaceTable, specifically swL3dvmrpInterfaceStatus and swL3dvmrpInterfaceLocalAddress, lets an administrator confirm which interfaces have DVMRP enabled and their configured local address and metric; a rising swL3dvmrpInterfaceRcvBadPkts or swL3dvmrpInterfaceRcvBadRoutes counter reveals malformed DVMRP traffic or a neighbor misconfiguration. swL3dvmrpInterfaceNbrTimeout and swL3dvmrpInterfaceProbe show the neighbor discovery timing, useful when diagnosing a DVMRP adjacency that keeps expiring. Separately, swL3OspfECMPState and swL3RoutePreference give visibility into OSPF multipath behavior and route selection priority on the same switch.

What Can Be Monitored

  • DVMRP interface status
  • DVMRP neighbor timeout/probe interval
  • DVMRP bad packet/route counters
  • OSPF ECMP state
  • route preference / administrative distance
Imported Objects

From IF-MIB

InterfaceIndex

From OSPF-MIB

AreaID
DesignatedRouterPriority
HelloRange
Metric
PositiveInteger
RouterID
Status
TOSType
UpToMaxAge

From SNMPv2-SMI

Counter32
Integer32
IpAddress
MODULE-IDENTITY
NOTIFICATION-TYPE
OBJECT-TYPE
Unsigned32

From SNMPv2-TC

DisplayString
MacAddress
PhysAddress
RowStatus
TimeStamp
TruthValue

From SWPRIMGMT-DGS3000-MIB

dgs3000-26-tc

How to Use in IPNetwork Monitor

Example using swL3ospfVirtIfEvents OID:

Select a D-Link DGS-3000-26TC Layer 3 managed 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 swL3ospfVirtIfEvents 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 number of state changes or error events on this Virtual Link. 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 3 network management MIB for D-Link DGS3000 Gigabit switches.

Start monitoring D-Link DGS-3000-26TC Layer 3 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 DGS3000-26TC-L3MGMT-MIB