DASAN-BRIDGE-MIB

MIB Reference — IPNetwork Monitor · Updated October 05, 2026

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Organization: Dasan Co., Ltd.

Last Updated: 2005-08-03

Category: LAN Management, VLAN Management

Description: Manages IEEE 802.1D/802.1Q bridging and MAC forwarding tables on Dasan switch platforms.

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What Is DASAN-BRIDGE-MIB?

DASAN-BRIDGE-MIB is a DASAN Networks MIB describing IEEE 802.1D/802.1Q bridging and VLAN behavior on Dasan switch platforms, extending the standard Bridge MIB with vendor-specific VLAN objects. It exposes VLAN capability and configuration data (dsVlanVersionNumber, dsVlanMaxVlanId, dsVlanMaxSupportedVlans, dsVlanNumVlans), GVRP status, and a current VLAN table with per-VLAN egress/untagged port membership and FDB (forwarding database) identifiers, alongside Spanning Tree base objects. It is used to monitor the software configuration and operational status of Layer 2 switching, confirming the number of active VLANs against supported maximums, verifying correct egress/untagged port assignment per VLAN, and checking GVRP and spanning-tree base status to catch loops or VLAN propagation issues. As stated in its description, this MIB explicitly describes bridge functionality for DASAN products and is layered on the standard IETF BRIDGE-MIB and Q-BRIDGE-MIB conventions. It was deployed on DASAN Networks Ethernet switches used in metro Ethernet and enterprise access network deployments, typically obtained via a DASAN-BRIDGE-MIB download for loading into a MIB browser.

IPNetwork Monitor allows you to monitor SNMP objects defined in DASAN-BRIDGE-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

  • DASAN Networks Ethernet switch

Monitoring Examples

An operator polling dsVlanCurrentTable indexed by dsVlanIndex can inspect dsVlanCurrentEgressPorts and dsVlanCurrentUntaggedPorts to confirm a given VLAN's port membership matches the intended access/trunk design, and cross-check dsVlanFdbId to ensure correct FDB association per VLAN. Comparing dsVlanNumVlans against dsVlanMaxSupportedVlans warns an administrator before the switch reaches its VLAN capacity limit. Checking dsVlanGvrpStatus confirms whether GVRP dynamic VLAN registration is enabled, which is useful when diagnosing unexpected VLAN propagation across trunk links.

What Can Be Monitored

  • active VLAN count vs. maximum supported
  • VLAN egress/untagged port membership
  • GVRP status
  • forwarding database (FDB) association
  • spanning tree base status
Imported Objects

From DASAN-SMI

dasanEventsOBJECT-IDENTITY
dasanMgmtOBJECT-IDENTITY
dasanModulesOBJECT-IDENTITY

From DASAN-SWITCH-MIB

dasanSwitchMIBObjects
dsSwitchModulesOBJECT-IDENTITY

From IF-MIB

ifIndexOBJECT-TYPE

From RFC1155-SMI

Counter

From SNMPv2-CONF

MODULE-COMPLIANCE
OBJECT-GROUP

From SNMPv2-SMI

Counter32
Counter64
Gauge32
Integer32
MODULE-IDENTITY
NOTIFICATION-TYPE
OBJECT-TYPE
TimeTicks
Unsigned32
mib-2

From SNMPv2-TC

AutonomousType
DisplayString
PhysAddress
RowStatus
TEXTUAL-CONVENTION
TestAndIncr
TimeStamp
TruthValue

How to Use in IPNetwork Monitor

Example using dsStpTopChanges OID:

Select a DASAN Networks 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 dsStpTopChanges 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 functionality management for DASAN switching products including spanning tree and VLAN configuration.

Start monitoring DASAN Networks Ethernet switches 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 DASAN-BRIDGE-MIB