ALVARION-QOS-MIB

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Organization: Alvarion Ltd.

Last Updated: 2007-10-31

Category: Quality of Service, Vendor: Alvarion

Description: Alvarion wireless device QoS MIB for managing WMM priority queues, DSCP mapping, and traffic class policies.

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What Is ALVARION-QOS-MIB?

ALVARION-QOS-MIB is a vendor enterprise MIB from Alvarion providing Quality of Service statistics and configuration for wireless equipment, modeling WMM-style priority queues and per-queue traffic counters. It exposes a QoS counters table with per-queue transmitted/received frame counts (including multicast variants), failed transmission counts, retry counts, multiple-retry counts, and frame duplicate counts. Its monitoring purpose is software/traffic-performance health at the queue level: an admin can see whether a given priority queue is experiencing excessive retries, failures, or duplicate frames, which points to RF interference or congestion affecting that traffic class. It is a self-contained enterprise MIB, conceptually aligned with IEEE 802.11e/WMM priority queuing but implemented with Alvarion-specific objects. It is deployed on Alvarion wireless base stations and subscriber units to monitor QoS-differentiated wireless traffic performance. Engineers can download the ALVARION-QOS-MIB file directly to load it into their MIB browser.

IPNetwork Monitor allows you to monitor SNMP objects defined in ALVARION-QOS-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

Alvarion wireless base station/subscriber unit

Monitoring Examples

An operator walks coQOSCountersTable/coQOSCountersEntry keyed by coQOSQueueId to compare coQOSTransmittedFrameCount against coQOSFailedCount and coQOSRetryCount per priority queue, and a high ratio of failures/retries on a specific queue would indicate RF congestion affecting that traffic class (e.g., voice vs. best-effort). coQOSFrameDuplicateCount rising sharply can indicate link-layer acknowledgment problems requiring retransmission. coQOSMulticastTransmittedFrameCount and coQOSMulticastReceivedFrameCount let an admin separately track multicast traffic health within each queue.

What Can Be Monitored

per-queue transmitted/received frame counts
per-queue failed transmission count
retry and multiple-retry counts
frame duplicate count
multicast frame counts per queue

Imported Objects

From ALVARION-SMI

alvarionMgmtV2

OBJECT-IDENTITY

From ALVARION-TC

AlvarionPriorityQueue

From IF-MIB

ifIndex

OBJECT-TYPE

From SNMPv2-CONF

MODULE-COMPLIANCE
OBJECT-GROUP

From SNMPv2-SMI

Counter32
MODULE-IDENTITY
OBJECT-TYPE

How to Use in IPNetwork Monitor

Example using coQOSTransmittedFrameCount OID:

Select an Alvarion (Cambium) wireless broadband access points/base station (legacy) 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 coQOSTransmittedFrameCount 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 counter increments only when an acknowledged MPDU with an individual address in the address 1 field or MPDU with a multicast address in the address 1 field of type Data or Management. 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 a Counter32-type OID, Value bounds is the most useful condition here — trigger an alert if the counter increases sharply between polls relative to its normal baseline, since an unexpected spike often reflects a real change in traffic or activity. Click Finish to create the monitor; you can adjust any parameter later.

OIDs

OID symbolic	OID numeric	Type	Access	Description
alvarionQOS	1.3.6.1.4.1.12394.1.10.5.13			The MIB module for enterprise specific QoS options.
alvarionQOSMIBObjects	1.3.6.1.4.1.12394.1.10.5.13.1
coQOSStatistics	1.3.6.1.4.1.12394.1.10.5.13.1.1
coQOSCountersTable	1.3.6.1.4.1.12394.1.10.5.13.1.1.1		not-accessible	Group containing attributes that are MAC counters. In tabular form to allow multiple instance on an agent.
coQOSCountersEntry	1.3.6.1.4.1.12394.1.10.5.13.1.1.1.1		not-accessible	An entry in the coQOSCountersEntry Table. ifIndex - Each 802.11 interface is represented by an ifEntry. Interface tables in this MIB module are indexed by ifIndex.
ALV coQOSQueueId	1.3.6.1.4.1.12394.1.10.5.13.1.1.1.1.1	AlvarionPriorityQueue	not-accessible	Queue identifier used to access the statistics.
C32 coQOSTransmittedFrameCountEx	1.3.6.1.4.1.12394.1.10.5.13.1.1.1.1.2	Counter32	read-only	This counter increments only when an acknowledged MPDU with an individual address in the address 1 field or MPDU with a multicast address in the address 1 field of type Data or Management.
C32 coQOSMulticastTransmittedFrameCount	1.3.6.1.4.1.12394.1.10.5.13.1.1.1.1.3	Counter32	read-only	This counter increments only when the multicast bit is set in the destination MAC address of a successfully transmitted MSDU. When operating as a STA in an ESS, where these frames are directed to the AP, this implies having received an acknowledgment to all associated MPDUs.
C32 coQOSFailedCount	1.3.6.1.4.1.12394.1.10.5.13.1.1.1.1.4	Counter32	read-only	This counter increments when an MSDU is not transmitted successfully due to the number of transmit attempts exceeding either the coQOSShortRetryLimit or coQOSLongRetryLimit.
C32 coQOSRetryCount	1.3.6.1.4.1.12394.1.10.5.13.1.1.1.1.5	Counter32	read-only	This counter increments when an MSDU is successfully transmitted after one or more retransmissions. This is basically a total of single and multiple retry counts.
C32 coQOSMultipleRetryCount	1.3.6.1.4.1.12394.1.10.5.13.1.1.1.1.6	Counter32	read-only	This counter increments when an MSDU is successfully transmitted after more than one retransmission.
C32 coQOSFrameDuplicateCount	1.3.6.1.4.1.12394.1.10.5.13.1.1.1.1.7	Counter32	read-only	This counter increments when a frame is received that the Sequence Control field indicates is a duplicate.
C32 coQOSReceivedFrameCount	1.3.6.1.4.1.12394.1.10.5.13.1.1.1.1.8	Counter32	read-only	This counter shall be incremented for each successfully received MPDU of type Data or Management. This is basically a total of unicast and multicast received frames.
C32 coQOSMulticastReceivedFrameCount	1.3.6.1.4.1.12394.1.10.5.13.1.1.1.1.9	Counter32	read-only	This counter shall increment when a MPDU is received with the multicast bit set in the destination MAC address.
coQOSConformance	1.3.6.1.4.1.12394.1.10.5.13.1.2
coQOSGroups	1.3.6.1.4.1.12394.1.10.5.13.1.2.1
coQOSCountersGroup	1.3.6.1.4.1.12394.1.10.5.13.1.2.1.1			Provides the necessary support for QOS counters.
coQOSCompliances	1.3.6.1.4.1.12394.1.10.5.13.1.2.2
coQOSCompliance	1.3.6.1.4.1.12394.1.10.5.13.1.2.2.1			The compliance statement for SNMPv2 entities that implement the IEEE 802.11 MIB.

RFC description

Alvarion QoS MIB for enterprise-specific quality of service options on wireless devices with queue priority management.

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Download ALVARION-QOS-MIB