CISCOSB-POE-MIB

All MIBs › CISCOSB-POE-MIB

Organization: Cisco Small Business

Last Updated: 2010--0-6-

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

Description: Manages Cisco Small Business Power over Ethernet (PoE) port configuration, budgets, and power statistics.

Start monitoring vendor-neutral, standards-based MIB, any SNMPv3-capable network device (SNMP engine identity/boot/clock status) 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.

What Is CISCOSB-POE-MIB?

CISCOSB-POE-MIB is a Cisco Small Business private MIB for managing Power over Ethernet (PoE) power-sourcing-equipment ports, covering per-port power budgets, limits, and real-time electrical statistics. It exposes port-level output voltage, current, and power draw alongside configured and operational power limits, port status, and PoE+ support capability. This is a hardware-status MIB in the power-delivery sense: it is used to monitor whether powered devices (phones, cameras, access points) are drawing power correctly, whether a port has tripped its power limit, or whether a port has failed to deliver power due to a fault, which directly affects the health of attached endpoints. It typically complements the standard POWER-ETHERNET-MIB (IEEE 802.3af/at PSE MIB) conventions it is modeled after. It is deployed on small-business PoE switches powering IP phones, wireless access points, and IP cameras. Engineers can download the CISCOSB-POE-MIB file directly to load it into their MIB browser.

IPNetwork Monitor allows you to monitor SNMP objects defined in CISCOSB-POE-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 PoE switches

Monitoring Examples

A network operator would poll rlPethPsePortTable/rlPethPsePortEntry to check rlPethPsePortOutputPower and rlPethPsePortOutputCurrent per rlPethPsePortIndex, comparing them against rlPethPsePortPowerLimit and rlPethPsePortOperPowerLimit to see if a connected device is near its allotted budget. The rlPethPsePortStatus and rlPethPsePortStatusDescription reveal whether a port is delivering power normally, in a fault state, or has been denied power due to budget exhaustion. A port whose rlPethPsePortStatus flips to a fault/overload state right after a new access point is plugged in usually indicates the device exceeds the port's rlPethPsePortSupportPoePlus capability or configured limit.

What Can Be Monitored

per-port PoE output voltage/current/power
per-port power limit vs. operational limit
port power status
PoE+ support per port

Imported Objects

From CISCOSB-MIB

switch001

MODULE-IDENTITY

From SNMPv2-SMI

MODULE-IDENTITY
OBJECT-TYPE

From SNMPv2-TC

DisplayString
TruthValue

How to Use in IPNetwork Monitor

Example using rlPethPsePortOutputVoltage OID:

Select a Cisco Small Business PoE 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 rlPethPsePortOutputVoltage 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. This variable indicates on the output voltage level in milli volts from rlPethPsePortIndex. 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 an INTEGER-type OID, Value bounds is the most useful condition here — trigger an alert if the value drifts significantly from its normal baseline, since an unexpected change often points to a real underlying issue. Click Finish to create the monitor; you can adjust any parameter later.

OIDs

OID symbolic	OID numeric	Type	Access	Description
rlPoe	1.3.6.1.4.1.9.6.1.101.108			Add a new field in the PoE MIB to indicate Max power allocation allowed
rlPethPsePortTable	1.3.6.1.4.1.9.6.1.101.108.1		not-accessible	The table listing additional information for Power Over Ethernet ports.
rlPethPsePortEntry	1.3.6.1.4.1.9.6.1.101.108.1.1		not-accessible	An entry in the rlPethPsePortTable.
INT rlPethPsePortGroupIndex	1.3.6.1.4.1.9.6.1.101.108.1.1.1	INTEGER	not-accessible	This variable uniquely identifies the group containing the port to which a power Ethernet PSE is connected. Group means box in the stack, module in a rack and the value 1 MUST be used for non-modular devices. Furthermore, the same value MUST be used in this variable, pethMainPseGroupIndex, and pethNotificationControlGroupIndex to refer to a given box in a stack or module in the rack.
INT rlPethPsePortIndex	1.3.6.1.4.1.9.6.1.101.108.1.1.2	INTEGER	not-accessible	This variable uniquely identifies the power Ethernet PSE port within group pethPsePortGroupIndex to which the power Ethernet PSE entry is connected.
INT rlPethPsePortOutputVoltageEx	1.3.6.1.4.1.9.6.1.101.108.1.1.3	INTEGER	read-only	This variable indicates on the output voltage level in milli volts from rlPethPsePortIndex.
INT rlPethPsePortOutputCurrent	1.3.6.1.4.1.9.6.1.101.108.1.1.4	INTEGER	read-only	This variable indicates on the output current level in milli amper from rlPethPsePortIndex.
INT rlPethPsePortOutputPower	1.3.6.1.4.1.9.6.1.101.108.1.1.5	INTEGER	read-only	This variable indicates on the output power level in milli watts from rlPethPsePortIndex.
INT rlPethPsePortPowerLimit	1.3.6.1.4.1.9.6.1.101.108.1.1.6	INTEGER	read-write	This variable indicates on the user configured power level in milli watts which is available from rlPethPsePortIndex.
INT rlPethPsePortStatus	1.3.6.1.4.1.9.6.1.101.108.1.1.7	INTEGER	read-only	This variable indicates on the hardware status of rlPethPsePortIndex.
STR rlPethPsePortStatusDescription	1.3.6.1.4.1.9.6.1.101.108.1.1.8	DisplayString	read-only	This variable indicates the description of the hardware status of rlPethPsePortIndex.
INT rlPethPsePortOperPowerLimit	1.3.6.1.4.1.9.6.1.101.108.1.1.9	INTEGER	read-only	This variable indicates the maximum power level in milli watts which is available from rlPethPsePortIndex.
T/F rlPethPsePortSupportPoePlus	1.3.6.1.4.1.9.6.1.101.108.1.1.10	TruthValue	read-only	This variable indicates if the port supports poe plus.
STR rlPethPsePortTimeRangeName	1.3.6.1.4.1.9.6.1.101.108.1.1.11	DisplayString	read-write	This variable is used to bind PoE port to time range.
T/F rlPethPsePortOperStatus	1.3.6.1.4.1.9.6.1.101.108.1.1.12	TruthValue	read-only	This Read-Only variable indicates PoE port current status affected by time range active/inactive and admin status.
INT rlPethPsePortMaxPowerAllocAllowed	1.3.6.1.4.1.9.6.1.101.108.1.1.13	INTEGER	read-only	This variable indicates the maximum power allocation allowed per port (including wire power loses) in milli-watts which is available from rlPethPsePortIndex.
T/F rlPethPsePortSupportPoe	1.3.6.1.4.1.9.6.1.101.108.1.1.14	TruthValue	read-only	This variable indicates if the port is a poe port
rlPethMainPseTable	1.3.6.1.4.1.9.6.1.101.108.2		not-accessible	The table listing additional read - only information for Power Over Ethernet.
rlPethMainPseEntry	1.3.6.1.4.1.9.6.1.101.108.2.1		not-accessible	An entry in the rlPethMainPseTable.
INT rlPethMainPseGroupIndex	1.3.6.1.4.1.9.6.1.101.108.2.1.1	INTEGER	not-accessible	This variable uniquely identifies the group containing the port to which a power Ethernet PSE is connected. Group means box in the stack, module in a rack and the value 1 MUST be used for non-modular devices. Furthermore, the same value MUST be used in this variable, pethMainPseGroupIndex, and pethNotificationControlGroupIndex to refer to a given box in a stack or module in the rack.
STR rlPethMainPseSwVersion	1.3.6.1.4.1.9.6.1.101.108.2.1.2	DisplayString	read-only	This variable identifies the MCU SW version.
STR rlPethMainPseHwVersion	1.3.6.1.4.1.9.6.1.101.108.2.1.3	DisplayString	read-only	This variable identifies the MCU HW version.
INT rlPethMainPseHwType	1.3.6.1.4.1.9.6.1.101.108.2.1.4	INTEGER	read-only	This variable identifies the MCU HW type (enhanced, plus, none).
INT rlPethMainPsePowerGuardBand	1.3.6.1.4.1.9.6.1.101.108.2.1.5	INTEGER	read-only	This variable identifies the guard band in [W] for not connecting additional ports.
rlPethPowerPseTable	1.3.6.1.4.1.9.6.1.101.108.3		not-accessible	The table listing additional read-write information for Power Over Ethernet.
rlPethPowerPseEntry	1.3.6.1.4.1.9.6.1.101.108.3.1		not-accessible	An entry in the rlPethPowerPseTable.
INT rlPethPowerPseGroupIndex	1.3.6.1.4.1.9.6.1.101.108.3.1.1	INTEGER	not-accessible	This variable uniquely identifies the group containing the port to which a power Ethernet PSE is connected. Group means box in the stack, module in a rack and the value 1 MUST be used for non-modular devices. Furthermore, the same value MUST be used in this variable, PethPowerPseGroupIndex, and pethNotificationControlGroupIndex to refer to a given box in a stack or module in the rack.
INT rlPethPowerPsePower	1.3.6.1.4.1.9.6.1.101.108.3.1.2	INTEGER	read-write	This variable identifies the maximum power in [W] supplied by PSE.
INT rlPethPowerPseRpsPower	1.3.6.1.4.1.9.6.1.101.108.3.1.3	INTEGER	read-write	This variable identifies the maximum power in [W] supplied by PSE + RPS.
INT rlPethPowerPsePowerManagementMode	1.3.6.1.4.1.9.6.1.101.108.3.1.4	INTEGER	read-write	This variable identifies power management mode.
INT rlPethPowerPsedisconnectMethod	1.3.6.1.4.1.9.6.1.101.108.3.1.5	INTEGER	read-write	This variable identifies disconnect method.
INT rlPethPowerPseTemperatureSensor	1.3.6.1.4.1.9.6.1.101.108.3.1.6	INTEGER	read-only	This variable identifies the pd temperature sensor.
INT rlPethPowerPseInrushTestEnabled	1.3.6.1.4.1.9.6.1.101.108.3.1.7	INTEGER	read-write	This variable identifies if HW inrush test will be disabled. by default HW inrush test is enabled.

RFC description

Cisco Small Business MIB for Power Over Ethernet (PoE) port monitoring and power allocation.

Start monitoring Cisco Small Business PoE 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-POE-MIB