BRIDGE-OPT-MIB

MIB Reference — IPNetwork Monitor · Updated September 09, 2026

All MIBsBRIDGE-OPT-MIB

Category: Network Interfaces, VLAN and Bridging

Description: Manages bridge protocol options and spanning tree configuration for LAN bridge devices.

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What Is BRIDGE-OPT-MIB?

BRIDGE-OPT-MIB is understood, from its name, to be a MIB extending standard bridge (IEEE 802.1D) management with optional spanning-tree and bridge-protocol configuration objects for Ethernet LAN bridges and switches. It would expose spanning-tree configuration and per-bridge-port state extensions beyond the base BRIDGE-MIB (RFC 4188). It would primarily support monitoring the software/protocol status of a device's bridging function -- spanning-tree topology state and per-port role/state such as blocking, listening, learning, or forwarding -- used to detect loops or topology changes rather than physical hardware sensor readings. It very likely builds on and depends on the standard BRIDGE-MIB, which it supplements with optional or extended objects. No module description or sample object names were retrievable for this MIB to confirm these details, so this characterization is based on its module name and conventional bridge-MIB structure. It's typically deployed on Ethernet bridges and Layer 2 switches implementing spanning tree, across various vendors, and network engineers can get the BRIDGE-OPT-MIB download to load into their MIB browser for spanning-tree monitoring.

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

  • Motorola Codex 6500-series data/statistical multiplexer (legacy)

Monitoring Examples

No sample object or table names were retrievable for this MIB, so a concrete polling example can't be grounded in real identifiers. In general, a bridge "options" extension MIB of this kind would be polled for per-port spanning-tree state/role, which an operator would use to detect a topology change or a port unexpectedly transitioning into a blocking state, indicating a loop or link failure.

What Can Be Monitored

  • spanning tree port state (blocking/listening/learning/forwarding)
  • spanning tree topology change status
  • bridge protocol configuration parameters
Imported Objects

From RFC-1212

OBJECT-TYPE

From RFC1155-SMI

Counter
enterprises
OIDs

RFC description

Manages bridge MAC filtering and static address tables on Codex CDX6500 data networking equipment.

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Download BRIDGE-OPT-MIB