CISCOSB-Physicaldescription-MIB

MIB Reference — IPNetwork Monitor · Updated September 09, 2026

All MIBsCISCOSB-Physicaldescription-MIB

Organization: Cisco Systems, Inc.

Last Updated: 2006-02-12

Category: Hardware and Environment, Routing Protocols, Vendor: RADLAN/Cisco SB

Description: Defines managed objects for physical description and environmental parameters of Cisco Small Business devices, including unit parameters and fan monitoring.

IPNetwork Monitor uses several OIDs from this MIB in network discovery and polling the applicable devices. Start monitoring CISCOSB-Physicaldescription-MIB with a free 30-day trial of IPNetwork Monitor.

What Is CISCOSB-Physicaldescription-MIB?

CISCOSB-Physicaldescription-MIB is a Cisco Small Business private MIB that describes the physical composition of a device, including stackable module inventory and layout, and general physical/environmental parameters such as fan data. It exposes a module table detailing each module's stack-unit membership, module type, starting port and port count, and physical row/column/role placement, useful for representing modular or stackable switch hardware. Its monitoring value is hardware-inventory and hardware-status oriented: an administrator can confirm the physical module layout matches expectations after a stack change, and the associated fan-data object supports basic cooling-health checks. It shares numbering conventions with the broader CISCOSB private tree and conceptually parallels the standard ENTITY-MIB physical-entity model. It is used on modular or stackable Cisco Small Business switches to track physical unit/module topology. Engineers can download the CISCOSB-Physicaldescription-MIB file directly to load it into their MIB browser.

IPNetwork Monitor allows you to monitor SNMP objects defined in CISCOSB-Physicaldescription-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

  • Cisco Small Business stackable switches

Monitoring Examples

An administrator would poll rlPhdModuleTable/rlPhdModuleEntry to confirm each module's rlPhdModuleType, rlPhdModuleStackUnit, and rlPhdModuleStartingPort/rlPhdModuleNumberOfPorts match the physically installed hardware after adding or removing a stack unit. The rlPhdModuleRow and rlPhdModuleColumn values help a management tool render an accurate physical port map. A module reporting an unexpected rlPhdModuleRole after a firmware upgrade or stack reconfiguration would flag a stacking-role assignment that needs correction.

What Can Be Monitored

  • module type per stack unit
  • module port range
  • module physical position (row/column)
  • module stacking role
  • fan data
Imported Objects

From CISCOSB-DEVICEPARAMS-MIB

rndErrorDescOBJECT-TYPE
rndErrorSeverityOBJECT-TYPE

From CISCOSB-HWENVIROMENT

RlEnvMonState

From CISCOSB-MIB

rndNotificationsOBJECT-IDENTITY
switch001MODULE-IDENTITY

From ENTITY-SENSOR-MIB

EntitySensorStatus
EntitySensorValue

From IF-MIB

InterfaceIndex
InterfaceIndexOrZero
ifIndexOBJECT-TYPE

From MAU-MIB

JackType

From SNMPv2-SMI

MODULE-IDENTITY
NOTIFICATION-TYPE
OBJECT-TYPE
TimeTicks

From SNMPv2-TC

DisplayString
PhysAddress
RowStatus
TruthValue
OIDs

RFC description

Physical device configuration and stack management for Cisco Small Business switches.

Start monitoring Cisco Small Business stackable 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 CISCOSB-Physicaldescription-MIB