DECHUB900-CHASSIS-MIB-V3-0

MIB Reference — IPNetwork Monitor · Updated October 05, 2026

All MIBs › DECHUB900-CHASSIS-MIB-V3-0

Category: Hardware and Environment, Vendor: DEC/Digital

Description: Manages DEC HUB 900 chassis hardware components, power supplies, and backplane configuration.

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What Is DECHUB900-CHASSIS-MIB-V3-0?

DECHUB900-CHASSIS-MIB-V3-0 is a Digital Equipment Corporation (DEC) proprietary module for the DEChub 900 multiswitch chassis, a modular networking hub platform from the 1990s. Its data covers chassis hardware inventory and status: total and occupied slot counts, extended slot capacity, and a per-slot table describing installed module type, description, hardware/firmware version, and last-change events. This module is explicitly used for monitoring hardware status, letting operators confirm which physical modules are inserted in which chassis slots, detect unexpected module removal/insertion (via chasPopulationChanges and chasSlotLastChange), and verify installed module firmware versions across a modular chassis. It is a self-contained enterprise chassis MIB, predating widespread ENTITY-MIB adoption, though it addresses similar physical-inventory concerns as that later IETF standard. It was deployed in legacy DEC/Digital networking environments using the DEChub 900 modular hub as a multi-slot Ethernet/FDDI switching platform. Engineers can download the DECHUB900-CHASSIS-MIB-V3-0 file directly to load it into their MIB browser.

IPNetwork Monitor allows you to monitor SNMP objects defined in DECHUB900-CHASSIS-MIB-V3-0. 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

  • DEC DEChub 900 modular hub chassis

Monitoring Examples

An administrator polls chasSlotTable/chasSlotEntry keyed by chasSlotIndex to read chasSlotModuleType, chasSlotModuleDescr, and chasSlotModuleVersion for each installed card, confirming the expected module and firmware revision occupy each slot. Watching chasNumSlotsOccupied against chasNumSlots and chasPopulationChanges reveals whether a module was unexpectedly removed or a new one inserted, and chasSlotLastChange timestamps pinpoint exactly when that change occurred.

What Can Be Monitored

  • slot occupancy count
  • installed module type per slot
  • module firmware/hardware version
  • slot last-change time
  • chassis population change events
Imported Objects

From RFC-1212

OBJECT-TYPE

From RFC1155-SMI

Counter
Gauge
IpAddress
TimeTicks
enterprises

From RFC1213-MIB

DisplayString
OIDs

RFC description

MIB for the DEC (Digital Equipment Corporation) DEChub 900 MultiSwitch hub chassis. Defines management objects for monitoring and controlling the hub chassis components, power systems, and network ports supporting FDDI, Ethernet, and Token Ring.

Start monitoring DEC DEChub 900 modular hub chassis 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 DECHUB900-CHASSIS-MIB-V3-0