DLINK-3100-BRIDGEMIBOBJECTS-MIB

MIB Reference — IPNetwork Monitor · Updated October 05, 2026

All MIBs › DLINK-3100-BRIDGEMIBOBJECTS-MIB

Organization: Dlink, Inc. Dlink Semiconductor, Inc.

Last Updated: 2007-01-02

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

Description: D-Link 3100 bridge MIB objects providing management objects extending standard IEEE bridge MIB for D-Link switches.

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What Is DLINK-3100-BRIDGEMIBOBJECTS-MIB?

DLINK-3100-BRIDGEMIBOBJECTS-MIB is a D-Link private MIB that extends standard IEEE bridge management objects for the 3100 series switches, covering per-VLAN spanning tree and priority group configuration. It exposes objects for VLAN-aware spanning tree (dot1s-style) state, priority-to-port-group mapping, and related trap configuration. Its monitoring value lies in confirming the software state of the switch's Layer 2 loop-prevention and QoS priority mechanisms -- whether spanning tree is enabled per VLAN and correctly enforcing port roles, and how priority groups map to ports -- rather than exposing physical hardware sensors. It explicitly extends the standard IEEE 802.1D/802.1Q bridge MIB framework with D-Link-specific per-VLAN STP and priority objects. It is typically deployed in access or distribution-layer D-Link 3100 switches in networks requiring per-VLAN spanning tree and priority-based traffic handling. Engineers can download the DLINK-3100-BRIDGEMIBOBJECTS-MIB file directly to load it into their MIB browser.

IPNetwork Monitor allows you to monitor SNMP objects defined in DLINK-3100-BRIDGEMIBOBJECTS-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 3100 series managed switch

Monitoring Examples

An administrator would poll rldot1dStpEnable and rldot1dStpType to confirm spanning tree is enabled and which STP variant is running, and check the rldot1dStpVlanTable (rldot1dStpVlanEntry, rldot1dStpVlan) to see which VLANs have their own spanning tree instance, useful for detecting a VLAN that unexpectedly lacks loop protection. rldot1dPriorityPortGroupTable (rldot1dPriorityPortGroupEntry, rldot1dPriorityPortGroupNumber) shows how ports are grouped for priority handling. rldot1dStpTrapVariable indicates what information is included in STP-related trap notifications, useful when troubleshooting an unexpected topology change alert.

What Can Be Monitored

  • spanning tree enable state and type
  • per-VLAN spanning tree instance mapping
  • priority port group assignments
  • STP trap variable configuration
Imported Objects

From BRIDGE-MIB

BridgeId
Timeout
dot1dBasePortOBJECT-TYPE

From DLINK-3100-MIB

rndMODULE-IDENTITY

From IF-MIB

InterfaceIndex
ifIndexOBJECT-TYPE

From Q-BRIDGE-MIB

PortList

From RFC1155-SMI

Counter

From SNMP-FRAMEWORK-MIB

SnmpAdminString

From SNMPv2-SMI

Counter32
MODULE-IDENTITY
OBJECT-TYPE
TimeTicks

From SNMPv2-TC

DisplayString
RowStatus
TruthValue

How to Use in IPNetwork Monitor

Example using rldot1dStpTopChanges OID:

Select a D-Link 3100 series switch (DES/DGS-3100), per-VLAN spanning tree/priority 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 rldot1dStpTopChanges 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 topology changes detected by this bridge since the management entity was last reset or initialized. 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 sharply between polls relative to its normal baseline, since an unexpected spike often reflects a real change in traffic or activity. Click Finish to create the monitor; you can adjust any parameter later.
OIDs

RFC description

Bridge objects including priority mapping and spanning tree protocol for D-Link switches.

Start monitoring D-Link 3100 series switch (DES/DGS-3100), per-VLAN spanning tree/priority 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 DLINK-3100-BRIDGEMIBOBJECTS-MIB