H3C-DOT11-QOS-MIB

All MIBs › H3C-DOT11-QOS-MIB

Organization: Hangzhou H3C Technologies Co., Ltd.

Last Updated: 2008-07-23

Category: Technology: Wireless, Vendor: H3C/HH3C

Description: H3C MIB for 802.11 wireless QoS configuration including WMM parameters and traffic prioritization policies.

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What Is H3C-DOT11-QOS-MIB?

H3C-DOT11-QOS-MIB is an H3C-specific MIB for configuring and monitoring 802.11 wireless LAN QoS on H3C access points/wireless controllers, centered on the Wi-Fi Multimedia (WMM) protocol and its Enhanced Distributed Channel Access (EDCA) contention parameters. It exposes per-radio WMM enable/mapping configuration (including SVP-to-Access-Category mapping and Call Admission Control policy/utilization/user-count settings) and per-Access-Category EDCA parameters such as AIFSN. This is chiefly a wireless configuration and traffic-prioritization monitoring MIB: it lets an operator confirm WMM/QoS is enabled per radio and verify or tune EDCA contention parameters and admission-control thresholds that determine voice/video call quality over WLAN, with the CAC user/utilization counters giving visibility into radio load relevant to service quality. It builds on IEEE 802.11 WMM/EDCA standard concepts but is an H3C-proprietary MIB with no formal SNMP MIB import dependency stated. It is typically deployed on H3C wireless access points and WLAN controllers in enterprise networks carrying voice/video traffic over Wi-Fi, where H3C-DOT11-QOS-MIB SNMP monitoring helps confirm QoS policy is delivering the expected call quality.

IPNetwork Monitor allows you to monitor SNMP objects defined in H3C-DOT11-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

H3C wireless access points
H3C WLAN controllers

Monitoring Examples

Polling h3cDot11RadioWmmCfgTable / h3cDot11RadioWmmCfgEntry indexed by h3cDot11WmmRadioIndex shows whether h3cDot11RadioWmmEnabled is set and what h3cDot11RadioCacPolicy is in force. Watching h3cDot11RadioCacChlUtlValue and h3cDot11RadioCacUserNum reveals current channel utilization and associated user count, flagging a radio approaching its admission-control ceiling. Checking h3cDot11RadioWmmEdcaCfgTable's h3cDot11RadioWmmAifsn per h3cDot11RadioWmmAC confirms the contention-window tuning for each traffic Access Category (voice, video, best-effort, background).

What Can Be Monitored

per-radio WMM enable status
CAC policy and channel utilization
CAC associated user count
EDCA AIFSN per access category
SVP-to-AC mapping

Imported Objects

From H3C-DOT11-REF-MIB

H3cDot11ObjectIDType
H3cDot11QosAcType
H3cDot11RadioElementIndex
H3cDot11RadioScopeType
h3cDot11	MODULE-IDENTITY

From SNMPv2-SMI

Integer32
MODULE-IDENTITY
OBJECT-TYPE

From SNMPv2-TC

TEXTUAL-CONVENTION
TruthValue

How to Use in IPNetwork Monitor

Example using h3cDot11RadioCacChlUtlValue OID:

Select an H3C wireless access point/controller (802.11 WMM/EDCA QoS) 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 h3cDot11RadioCacChlUtlValue 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. Represents Maximum channel utilization rate, that is, the medium time of the accepted AC-VO traffic and AC-VI traffic to the valid time during the unit 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 utilization approaches its capacity limit, since sustained high utilization often precedes congestion or degraded performance. Click Finish to create the monitor; you can adjust any parameter later.

OIDs

OID symbolic	OID numeric	Type	Access	Description
h3cDot11QoS	1.3.6.1.4.1.2011.10.2.75.9			This MIB provides information about WLAN QoS configuration. GLOSSARY IEEE 802.11 Standard to encourage interoperability among wireless networking equipment. WMM WMM is a wireless QoS protocol designed to preferentially transmit packets with high priority, thus guaranteeing better QoS services for voice and video applications in a wireless network. EDCA Enhanced distributed channel access (EDCA) is a channel contention mechanism designed by WMM to preferentially transmit packets with high priority and allocate more bandwidth to such packets. AC Access category (AC), is used for channel contention. WMM defines four access categories; they are AC-VO (voice), AC-VI (video), AC-BE (best-effort), and AC-BK (background) in the descending order of priority. When contending for a channel, a high-priority AC preempts a low-priority AC. CAC Connection admission control (CAC) limits the number of clients that are using high-priority ACs (AC-VO and AC-VI) to guarantee sufficient bandwidth for existing high-priority traffic. U-APSD Unscheduled automatic power-save delivery (U-APSD) is a new power saving mechanism defined by WMM to enhance the power saving capability of clients. SVP SpectraLink voice priority (SVP) is a voice priority protocol designed by the Spectralink company to guarantee QoS for voice traffic.
h3cDot11WmmCfgGroup	1.3.6.1.4.1.2011.10.2.75.9.1
h3cDot11RadioWmmCfgTable	1.3.6.1.4.1.2011.10.2.75.9.1.1		not-accessible	The table defines the basic parameters for WMM configuration.
h3cDot11RadioWmmCfgEntry	1.3.6.1.4.1.2011.10.2.75.9.1.1.1		not-accessible	This entry contains the basic information for WMM configuration.
H3C h3cDot11WmmRadioIndex	1.3.6.1.4.1.2011.10.2.75.9.1.1.1.1	H3cDot11RadioElementIndex	not-accessible	Represents index of the radio.
T/F h3cDot11RadioWmmEnabled	1.3.6.1.4.1.2011.10.2.75.9.1.1.1.2	TruthValue	read-write	Represents the status of WMM in radio. 'true' : The WMM function is enabled. 'false': The WMM function is disabled.
H3C h3cDot11RadioSVPMapToAC	1.3.6.1.4.1.2011.10.2.75.9.1.1.1.3	H3cDot11WMMSVPMapAC	read-write	Represents the AC level which SVP packets are assigned to. 'acbk' : Specifies the AC-BK (background traffic) queue. 'acbe' : Specifies the AC-BE (best-effort traffic) queue. 'acvi' : Specifies the AC-VI (video traffic) queue. 'acvo' : Specifies the AC-VO (voice traffic) queue. 'disable' : Disable SVP packet mapping.
H3C h3cDot11RadioCacPolicy	1.3.6.1.4.1.2011.10.2.75.9.1.1.1.4	H3cDot11WMMCACPolicy	read-write	Represents the policy for CAC. CAC requires that a client obtain permission of the AP before it can use a high-priority AC for transmission, thus guaranteeing bandwidth to the clients that have gained access. CAC controls real time traffic (AC-VO and AC-VI traffic) but not common data traffic (AC-BE and AC-BK traffic).
I32 h3cDot11RadioCacChlUtlValueEx	1.3.6.1.4.1.2011.10.2.75.9.1.1.1.5	Integer32	read-write	Represents Maximum channel utilization rate, that is, the medium time of the accepted AC-VO traffic and AC-VI traffic to the valid time during the unit time. This object can be set only if the value of h3cDot11RadioCacPolicy is ChannelUtilization.
I32 h3cDot11RadioCacUserNum	1.3.6.1.4.1.2011.10.2.75.9.1.1.1.6	Integer32	read-write	Represents the users-based admission policy for CAC. This object can be set only if the value of h3cDot11RadioCacPolicy is userNumber.
h3cDot11RadioWmmEdcaCfgTable	1.3.6.1.4.1.2011.10.2.75.9.1.2		not-accessible	The table defines the basic parameters for EDCA configuration of radio.
h3cDot11RadioWmmEdcaCfgEntry	1.3.6.1.4.1.2011.10.2.75.9.1.2.1		not-accessible	This entry contains the basic information for EDCA configuration of radio.
H3C h3cDot11RadioWmmAC	1.3.6.1.4.1.2011.10.2.75.9.1.2.1.1	H3cDot11QosAcType	not-accessible	Represents the AC level index of EDCA parameters of radio. 'acbk' : Specifies AC-BK (background traffic). 'acbe' : Specifies AC-BE (best-effort traffic). 'acvi' : Specifies AC-VI (video traffic). 'acvo' : Specifies AC-VO (voice traffic).
I32 h3cDot11RadioWmmAifsn	1.3.6.1.4.1.2011.10.2.75.9.1.2.1.2	Integer32	read-write	Represents AIFSN parameter of EDCA. The value range of this object is limited by the radio chip capability.
I32 h3cDot11RadioWmmEcwMin	1.3.6.1.4.1.2011.10.2.75.9.1.2.1.3	Integer32	read-write	Represents ECWmin parameter of EDCA. The value range of this object is limited by the radio chip capability. ECWmin parameter of EDCA must be smaller than ECWmax parameter.
I32 h3cDot11RadioWmmEcwMax	1.3.6.1.4.1.2011.10.2.75.9.1.2.1.4	Integer32	read-write	Represents ECWmax parameter of EDCA. The value range of this object is limited by the radio chip capability. ECWmin parameter of EDCA must be larger than ECWmax parameter.
I32 h3cDot11RadioWmmTxoplimit	1.3.6.1.4.1.2011.10.2.75.9.1.2.1.5	Integer32	read-write	Represents TXOPLimit parameter of EDCA, the value must be in the range of 0 to 65535 (in units of 32 microseconds). The TXOP value of 0 indicates that only one MPDU can be transmitted. The range of this argument is limited by the radio chip capability.
T/F h3cDot11RadioWmmNoAck	1.3.6.1.4.1.2011.10.2.75.9.1.2.1.6	TruthValue	read-write	Represents the AC to adopt the No ACK policy. The protocol defines two ACK policies: Normal ACK and No ACK.
h3cDot11StationWmmEdcaTable	1.3.6.1.4.1.2011.10.2.75.9.1.3		not-accessible	The table defines the basic parameters for EDCA configuration of station.
h3cDot11StationWmmEdcaEntry	1.3.6.1.4.1.2011.10.2.75.9.1.3.1		not-accessible	This entry contains the basic information for EDCA configuration of client. If CAC is enabled for an AC, CAC is also enabled for ACs with higher priority. For example, if CAC is enabled for AC-VI, CAC is also enabled for AC-VO. However, enabling CAC for AC-VO does not enable CAC for AC-VI.
H3C h3cDot11StationWmmAC	1.3.6.1.4.1.2011.10.2.75.9.1.3.1.1	H3cDot11QosAcType	not-accessible	Represents the AC level index of EDCA parameters of client. 'acbk' : Specifies AC-BK (background traffic). 'acbe' : Specifies AC-BE (best-effort traffic). 'acvi' : Specifies AC-VI (video traffic). 'acvo' : Specifies AC-VO (voice traffic).
I32 h3cDot11StationWmmAifsn	1.3.6.1.4.1.2011.10.2.75.9.1.3.1.2	Integer32	read-write	Represents AIFSN parameter of EDCA.
I32 h3cDot11StationWmmEcwMin	1.3.6.1.4.1.2011.10.2.75.9.1.3.1.3	Integer32	read-write	Represents ECWmin parameter of EDCA.
I32 h3cDot11StationWmmEcwMax	1.3.6.1.4.1.2011.10.2.75.9.1.3.1.4	Integer32	read-write	Represents ECWmax parameter of EDCA.
I32 h3cDot11StationWmmTxoplimit	1.3.6.1.4.1.2011.10.2.75.9.1.3.1.5	Integer32	read-write	Represents TXOPLimit parameter of EDCA, the value is in units of 32 microseconds. The TXOP value of 0 indicates that only one MPDU can be transmitted.
T/F h3cDot11StationWmmCacEnabled	1.3.6.1.4.1.2011.10.2.75.9.1.3.1.6	TruthValue	read-write	Represents the AC to adopt the No ACK policy. The protocol defines two ACK policies: Normal ACK and No ACK. Only if the value of h3cDot11StationWmmAC is 'acvo' or 'acvi', Cac can be set correctly here.
h3cDot11WmmResetGroup	1.3.6.1.4.1.2011.10.2.75.9.1.4
I32 h3cDot11WmmResetRadioByAP	1.3.6.1.4.1.2011.10.2.75.9.1.4.1	Integer32	read-write	Clear the WMM statistics information of the radio of the specified AP or all radios. The meaning of this object is the same as h3cDot11APElementIndex, it represents the index of AP element. If the value of this object is set to 0xFFFFFFFF, WMM statistics information of all radios will be cleared. The value of this object is always 0 with the get operation.
I32 h3cDot11WmmResetStationByAP	1.3.6.1.4.1.2011.10.2.75.9.1.4.2	Integer32	read-write	Clear the WMM statistics information of the clients associated with the specified AP, or of all clients. The meaning of this object is the same as h3cDot11APElementIndex, it represents the index of AP element. If set with the 0xFFFFFFFF, it will clear the WMM statistics information of all clients. The value of this object is always 0 with the get operation.
h3cDot11RadioWmmEdcaCfg2Table	1.3.6.1.4.1.2011.10.2.75.9.1.5		not-accessible	The table defines the basic parameters for EDCA configuration of radio.
h3cDot11RadioWmmEdcaCfg2Entry	1.3.6.1.4.1.2011.10.2.75.9.1.5.1		not-accessible	This entry contains the basic information for EDCA configuration of radio.
H3C h3cDot11WMMAPSerialID	1.3.6.1.4.1.2011.10.2.75.9.1.5.1.1	H3cDot11ObjectIDType	not-accessible	Serial ID of the AP.
H3C h3cDot11WMMRdId	1.3.6.1.4.1.2011.10.2.75.9.1.5.1.2	H3cDot11RadioScopeType	not-accessible	radio ID of the radio.
H3C h3cDot11RdWmmAC	1.3.6.1.4.1.2011.10.2.75.9.1.5.1.3	H3cDot11QosAcType	not-accessible	Represents the AC level index of EDCA parameters of radio. 'acbk' : Specifies AC-BK (background traffic). 'acbe' : Specifies AC-BE (best-effort traffic). 'acvi' : Specifies AC-VI (video traffic). 'acvo' : Specifies AC-VO (voice traffic).
I32 h3cDot11RdWmmAifsn	1.3.6.1.4.1.2011.10.2.75.9.1.5.1.4	Integer32	read-write	Represents AIFSN parameter of EDCA. The value range of this object is limited by the radio chip capability.
I32 h3cDot11RdWmmEcwMin	1.3.6.1.4.1.2011.10.2.75.9.1.5.1.5	Integer32	read-write	Represents ECWmin parameter of EDCA. The value range of this object is limited by the radio chip capability. ECWmin parameter of EDCA must be smaller than ECWmax parameter.
I32 h3cDot11RdWmmEcwMax	1.3.6.1.4.1.2011.10.2.75.9.1.5.1.6	Integer32	read-write	Represents ECWmax parameter of EDCA. The value range of this object is limited by the radio chip capability. ECWmin parameter of EDCA must be larger than ECWmax parameter.
I32 h3cDot11RdWmmTxoplimit	1.3.6.1.4.1.2011.10.2.75.9.1.5.1.7	Integer32	read-write	Represents TXOPLimit parameter of EDCA, the value must be in the range of 0 to 65535 (in units of 32 microseconds). The TXOP value of 0 indicates that only one MPDU can be transmitted. The range of this argument is limited by the radio chip capability.

RFC description

WLAN QoS configuration and monitoring including WMM/EDCA for 802.11 wireless networks.

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Download H3C-DOT11-QOS-MIB