WLSX-SNR-MIB

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Organization: Aruba Wireless Networks

Last Updated: 2006-11-27

Category: Aruba Wireless Networking

Description: Monitors Aruba wireless client signal-to-noise ratio measurements and per-client RF link quality statistics.

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What Is WLSX-SNR-MIB?

WLSX-SNR-MIB is Aruba Networks' vendor-specific module for the Wireless Management System (WMS) component of its mobility controllers, focused on tracking signal-to-noise ratio and RF link quality for wireless clients. It exposes per-client radio performance data -- SNR readings and related RF statistics -- gathered by the controller's WMS subsystem as clients associate and roam across access points. Its monitoring value is centered on wireless performance/fault detection: poor SNR readings for a given client indicate a marginal RF link that may cause slow throughput or disconnects, letting administrators pinpoint coverage gaps or interference sources. It depends on Aruba's broader WLSX/WMS controller architecture and complements the vendor's other wireless MIBs covering AP and client association state rather than IETF standard MIBs. It is typically deployed in enterprise Wi-Fi networks managed by Aruba controllers, polled to troubleshoot poor client experience tied to weak signal or high interference, and administrators can get the WLSX-SNR-MIB download to load into their MIB browser for this troubleshooting.

IPNetwork Monitor allows you to monitor SNMP objects defined in WLSX-SNR-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

Aruba Networks wireless mobility controller (managed wireless clients/APs)

Monitoring Examples

An administrator would poll the per-client SNR objects to identify devices with degraded RF link quality, correlating low readings with a client's physical location to find a coverage hole or source of interference. Tracking SNR trends for a specific client over time can reveal a client roaming into a weak-signal area before users report slow Wi-Fi. These readings would typically be cross-referenced against the associated AP's radio and channel utilization data from companion Aruba MIBs to isolate whether the issue is client-side or AP-side. No specific object names were available in the source data for this module, so the above is inferred from its stated focus on wireless client SNR/RF link quality.

What Can Be Monitored

per-client signal-to-noise ratio
RF link quality
client roaming/coverage indicators

Imported Objects

From ARUBA-MIB

wlsxEnterpriseMibModules

OBJECT-IDENTITY

From SNMPv2-CONF

OBJECT-GROUP

From SNMPv2-SMI

Counter32
Integer32
IpAddress
MODULE-IDENTITY
NOTIFICATION-TYPE
OBJECT-TYPE
snmpModules

From SNMPv2-TC

DisplayString
MacAddress
PhysAddress
RowStatus
StorageType
TAddress
TDomain
TEXTUAL-CONVENTION
TestAndIncr
TimeInterval
TruthValue

From WLSX-MON-MIB

monPhyAddress	OBJECT-TYPE
monRadioNumber	OBJECT-TYPE
monitoredApBSSID	OBJECT-TYPE
monitoredStaPhyAddress	OBJECT-TYPE

How to Use in IPNetwork Monitor

Example using apSnrAverageSignalStrength OID:

Select an Aruba Networks wireless mobility controller 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 apSnrAverageSignalStrength 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 Signal Strength observed by the Monitoring station during this sample time. 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 Integer32-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
wlsxSNRMIB	1.3.6.1.4.1.14823.2.2.1.7			This MIB module defines MIB objects which provide information about the Wireless Management System (WMS) in the Aruba controller.
wlsxSNRGroup	1.3.6.1.4.1.14823.2.2.1.7.1
wlsxAPSnrTable	1.3.6.1.4.1.14823.2.2.1.7.1.1		not-accessible	This Table lists SNR information about monitored APs.
wlsxAPSnrEntry	1.3.6.1.4.1.14823.2.2.1.7.1.1.1		not-accessible	Station Management Entry
I32 apSnrAverageSignalStrengthEx	1.3.6.1.4.1.14823.2.2.1.7.1.1.1.1	Integer32	read-only	The Total Signal Strength observed by the Monitoring station during this sample time.
I32 apSnrSignalPkts	1.3.6.1.4.1.14823.2.2.1.7.1.1.1.2	Integer32	read-only	The Number of Signal Packets observed by the Monitoring station during this sample time.
I32 apSnrHighestRxSignalStrength	1.3.6.1.4.1.14823.2.2.1.7.1.1.1.3	Integer32	read-only	The Highest Signal Strength observed by the Monitoring station during this sample time.
I32 apSnrLowestRxSignalStrength	1.3.6.1.4.1.14823.2.2.1.7.1.1.1.4	Integer32	read-only	The Lowest Signal Strength observed by the Monitoring station during this sample time.
I32 apSnrSampleTime	1.3.6.1.4.1.14823.2.2.1.7.1.1.1.5	Integer32	read-only	The Sample Time in which this data is collected.
wlsxStaSnrTable	1.3.6.1.4.1.14823.2.2.1.7.1.2		not-accessible	This Table lists SNR information about monitored stations.
wlsxStaSnrEntry	1.3.6.1.4.1.14823.2.2.1.7.1.2.1		not-accessible	Station Management Entry
I32 staSnrAverageSignalStrength	1.3.6.1.4.1.14823.2.2.1.7.1.2.1.1	Integer32	read-only	The Total Signal Strength observed by the Monitoring station during this sample time.
I32 staSnrSignalPkts	1.3.6.1.4.1.14823.2.2.1.7.1.2.1.2	Integer32	read-only	The Number of Signal Packets observed by the Monitoring station during this sample time.
I32 staSnrHighestRxSignalStrength	1.3.6.1.4.1.14823.2.2.1.7.1.2.1.3	Integer32	read-only	The Highest Signal Strength observed by the Monitoring station during this sample time.
I32 staSnrLowestRxSignalStrength	1.3.6.1.4.1.14823.2.2.1.7.1.2.1.4	Integer32	read-only	The Lowest Signal Strength observed by the Monitoring station during this sample time.
I32 staSnrSampleTime	1.3.6.1.4.1.14823.2.2.1.7.1.2.1.5	Integer32	read-only	The Sample Time in which this data is collected.
wlsxAPSnrBSSIDTable	1.3.6.1.4.1.14823.2.2.1.7.1.3		not-accessible	This Table SNR information about monitored APs.
wlsxAPSnrBSSIDEntry	1.3.6.1.4.1.14823.2.2.1.7.1.3.1		not-accessible	Station Management Entry
I32 apSnrBSSIDAverageSignalStrength	1.3.6.1.4.1.14823.2.2.1.7.1.3.1.1	Integer32	read-only	The Total Signal Strength observed by the Monitoring station during this sample time.
I32 apSnrBSSIDSignalPkts	1.3.6.1.4.1.14823.2.2.1.7.1.3.1.2	Integer32	read-only	The Number of Signal Packets observed by the Monitoring station during this sample time.
I32 apSnrBSSIDHighestRxSignalStrength	1.3.6.1.4.1.14823.2.2.1.7.1.3.1.3	Integer32	read-only	The Highest Signal Strength observed by the Monitoring station during this sample time.
I32 apSnrBSSIDLowestRxSignalStrength	1.3.6.1.4.1.14823.2.2.1.7.1.3.1.4	Integer32	read-only	The Lowest Signal Strength observed by the Monitoring station during this sample time.
I32 apSnrBSSIDSampleTime	1.3.6.1.4.1.14823.2.2.1.7.1.3.1.5	Integer32	read-only	The Sample Time in which this data is collected.
wlsxStaSnrPhyTable	1.3.6.1.4.1.14823.2.2.1.7.1.4		not-accessible	This Table lists SNR information about monitored stations.
wlsxStaSnrPhyEntry	1.3.6.1.4.1.14823.2.2.1.7.1.4.1		not-accessible	Station Management Entry
I32 staSnrPhyAverageSignalStrength	1.3.6.1.4.1.14823.2.2.1.7.1.4.1.1	Integer32	read-only	The Total Signal Strength observed by the Monitoring station during this sample time.
I32 staSnrPhySignalPkts	1.3.6.1.4.1.14823.2.2.1.7.1.4.1.2	Integer32	read-only	The Number of Signal Packets observed by the Monitoring station during this sample time.
I32 staSnrPhyHighestRxSignalStrength	1.3.6.1.4.1.14823.2.2.1.7.1.4.1.3	Integer32	read-only	The Highest Signal Strength observed by the Monitoring station during this sample time.
I32 staSnrPhyLowestRxSignalStrength	1.3.6.1.4.1.14823.2.2.1.7.1.4.1.4	Integer32	read-only	The Lowest Signal Strength observed by the Monitoring station during this sample time.
I32 staSnrPhySampleTime	1.3.6.1.4.1.14823.2.2.1.7.1.4.1.5	Integer32	read-only	The Sample Time in which this data is collected.

RFC description

Signal-to-noise ratio monitoring for Aruba wireless network controllers, tracking AP and station signal strength statistics.

Start monitoring Aruba Networks wireless mobility controllers 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 WLSX-SNR-MIB