CISCO-IETF-DOT11-QOS-EXT-MIB

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Organization: Cisco System Inc.

Last Updated: 2002-04-01

Category: Cisco Devices, Quality of Service, Wireless and WLAN

Description: Extends 802.11 QoS management with Cisco-specific enhancements for wireless LAN quality-of-service parameters.

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What Is CISCO-IETF-DOT11-QOS-EXT-MIB?

CISCO-IETF-DOT11-QOS-EXT-MIB is a Cisco vendor MIB (registered under ciscoExperiment) that extends the base CISCO-IETF-DOT11-QOS-MIB, itself modeled on the draft IEEE 802.11e QoS specification, with additional Cisco-specific wireless QoS attributes. It defines cid11QosExtConfigTable (per-radio, per-traffic-category backoff offset and max retry settings), cid11QosExtIfConfigTable (whether QoS queueing is enabled on a given 802.11 interface), cid11QosExtVlanTable (traffic-category classification per VLAN, augmenting CISCO-WLAN-VLAN-MIB's VLAN table), and cid11QosExtQueueTable (per-category priority queue bandwidth quota out of a shared pool of 12). It also defines a ciscoIetfDot11QosExtChangeNotif notification, controllable via cid11QosExtNotifEnabled, fired whenever QoS configuration changes in either this MIB or the base QoS MIB. As a configuration-focused MIB it is most useful for confirming that QoS is enabled and correctly classifying traffic on wireless interfaces and VLANs rather than for raw traffic counters. It depends on CISCO-IETF-DOT11-QOS-MIB and CISCO-WLAN-VLAN-MIB for shared objects and is deployed on Cisco wireless access points/bridges implementing early 802.11e-based QoS. Wireless engineers reference the CISCO-IETF-DOT11-QOS-EXT-MIB MIB Browser view when auditing QoS configuration on legacy Cisco WLAN gear.

IPNetwork Monitor allows you to monitor SNMP objects defined in CISCO-IETF-DOT11-QOS-EXT-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 802.11 wireless access points and bridges (802.11e QoS-capable)

Monitoring Examples

An operator polls cid11QosExtIfConfigTable (indexed by ifIndex) to confirm cid11QosExtOptionEnabled is true on a wireless interface, then checks cid11QosExtVlanClassOfService for the voice VLAN; a voice VLAN classified as bestEffort instead of interactiveVoice would indicate a QoS misconfiguration causing voice traffic to compete unprioritized with data traffic.

What Can Be Monitored

per-radio backoff offset and max retry configuration
QoS enable/disable state per wireless interface
VLAN traffic-category (class of service) classification
priority queue bandwidth quota per traffic category
QoS configuration-change notifications

Imported Objects

From CISCO-IETF-DOT11-QOS-MIB

Cid11QosTrafficCategory
cid11TrafficCategory	OBJECT-TYPE
cid11TrafficPriority	OBJECT-TYPE

From CISCO-SMI

ciscoExperiment

OBJECT-IDENTITY

From CISCO-WLAN-VLAN-MIB

cwvlWlanVlanEntry

OBJECT-TYPE

From IF-MIB

ifIndex

OBJECT-TYPE

From SNMPv2-CONF

MODULE-COMPLIANCE
NOTIFICATION-GROUP
OBJECT-GROUP

From SNMPv2-SMI

MODULE-IDENTITY
NOTIFICATION-TYPE
OBJECT-TYPE
Unsigned32

From SNMPv2-TC

TruthValue

OIDs

OID symbolic	OID numeric	Type	Access	Description
ciscoIetfDot11QosExtMIB	1.3.6.1.4.1.9.10.90			This MIB module provides network management support for QoS on IEEE 802.11 wireless LAN devices. This MIB is an extension to QoS MIB defined in IEEE 802.11E standard.
ciscoIetfDot11QosExtMIBNotifs	1.3.6.1.4.1.9.10.90.0
NTF ciscoIetfDot11QosExtChangeNotif	1.3.6.1.4.1.9.10.90.0.1			This ciscoIetfDot11QosExtChangeNotif notification will be sent when the QoS configuration in the cid11QosExtIfConfigTable or the cid11QosConfigTable defined in the CISCO-IETF-DOT11-QOS-MIB are changed. The object cid11TrafficPriority defined in the cid11QosConfigTable specifies the traffic priority of the configuration that changed. The sending of these notifications can be enabled or disabled via the cid11QosExtNotifEnabled object.
ciscoIetfDot11QosExtMIBObjects	1.3.6.1.4.1.9.10.90.1
cid11QosExtConfig	1.3.6.1.4.1.9.10.90.1.1
cid11QosExtConfigTable	1.3.6.1.4.1.9.10.90.1.1.1		not-accessible	This table contains the basic set of attributes to configure QoS for a wireless LAN device. This table has a sparse dependent relationship with the ifTable. Each IEEE 802.11 wireless interface has a set of configuration parameters for each IP network traffic category. For each entry in this table, there exists an entry in the ifTable of ifType ieee80211(71).
cid11QosExtConfigEntry	1.3.6.1.4.1.9.10.90.1.1.1.1		not-accessible	Each entry contains parameters to configure traffic control on an IEEE 802.11 radio interface.
U32 cid11QosExtBackoffOffset	1.3.6.1.4.1.9.10.90.1.1.1.1.1	Unsigned32	read-write	This specifies the offset of the radio backoff from the transmission media for this traffic category. The backoff interval of a radio is calculated from a pseudo random integer drawn from a uniform distribution over the interval determined by the maximum and minimum of the contention window.
U32 cid11QosExtMaxRetry	1.3.6.1.4.1.9.10.90.1.1.1.1.2	Unsigned32	read-write	This specifies the number of times the radio retries for a particular transmission if there is a collision for the media.
cid11QosExtIfConfigTable	1.3.6.1.4.1.9.10.90.1.1.2		not-accessible	This table contains the attributes indicating QoS support information on the IEEE 802.11 radio interfaces. This table has a sparse dependent relationship with the ifTable. For each entry in this table, there exists an entry in the ifTable of ifType ieee80211(71).
cid11QosExtIfConfigEntry	1.3.6.1.4.1.9.10.90.1.1.2.1		not-accessible	Each entry contains attributes to configure QoS for an IEEE 802.11 interface.
T/F cid11QosExtOptionEnabled	1.3.6.1.4.1.9.10.90.1.1.2.1.1	TruthValue	read-only	This object indicates if QoS is enabled on this IEEE 802.11 network interface. If it is 'true', QoS queueing is on and traffic is prioritized according to traffic categories. It it is 'false', there is no QoS queueing and traffic is not prioritized.
cid11QosExtVlanTable	1.3.6.1.4.1.9.10.90.1.1.3		not-accessible	This table contains attributes for traffic classification of VLANs. This table has a one-to-one dependent relationship to the cwvlWlanVlanTable in the CISCO-WLAN-VLAN-MIB.
cid11QosExtVlanEntry	1.3.6.1.4.1.9.10.90.1.1.3.1		not-accessible	Each entry includes parameters determining the class of service (category) of the traffic and QoS configuration on the VLAN.
CID cid11QosExtVlanClassOfService	1.3.6.1.4.1.9.10.90.1.1.3.1.1	Cid11QosTrafficCategory	read-create	This is the class of service classification to the traffic transmitting on this VLAN. The class of service determines the priority of the traffic. The default VLAN for voice traffic is '4095', and the default service classification is 'interactiveVoice'. The classification on the VLAN '4095' cannot be modified by the network management system. The service classification on all other VLANs are 'bestEffort'.
cid11QosExtQueue	1.3.6.1.4.1.9.10.90.1.2
cid11QosExtQueueTable	1.3.6.1.4.1.9.10.90.1.2.1		not-accessible	This table contains the priority queue configuration attributes for IEEE 802.11 radio interface. This table has a sparse dependent relationship with the ifTable. For each entry in this table, there exists an entry in the ifTable of ifType ieee80211(71).
cid11QosExtQueueEntry	1.3.6.1.4.1.9.10.90.1.2.1.1		not-accessible	A collection of attributes to configure the priority queues for each traffic category on an IEEE 802.11 interface.
U32 cid11QosExtQueueQuota	1.3.6.1.4.1.9.10.90.1.2.1.1.1	Unsigned32	read-only	This is the current QoS priority queue packet quota for the traffic category on the overall bandwidth. The total quota is 12 and is shared among 8 transmitting queues. The queue with the largest quota value has the largest share of the overall bandwidth of the radio. The quota is allocated by the radio driver dynamically.
cid11QosExtNotifControl	1.3.6.1.4.1.9.10.90.1.3
T/F cid11QosExtNotifEnabled	1.3.6.1.4.1.9.10.90.1.3.1	TruthValue	read-write	Indicates whether ciscoIetfDot11QosExtChangeNotif notifications will or will not be sent by the agent when the QoS configuration in the cid11QosExtIfConfigTable and cid11QosConfigTable defined in the CISCO-IETF-DOT11-QOS-MIB are changed.
ciscoIetfDot11QosExtMIBConform	1.3.6.1.4.1.9.10.90.2
ciscoIetfD11QosExtMIBCompliances	1.3.6.1.4.1.9.10.90.2.1
ciscoIetfD11QosExtMIBCompliance	1.3.6.1.4.1.9.10.90.2.1.1			The compliance statement for the configuration and status groups.
ciscoIetfD11QosExtMIBGroups	1.3.6.1.4.1.9.10.90.2.2
ciscoIetfD11QosExtConfigGroup	1.3.6.1.4.1.9.10.90.2.2.1			Configurations for IEEE 802.11 QoS.
ciscoIetfD11QosExtQueueGroup	1.3.6.1.4.1.9.10.90.2.2.2			Configurations for IEEE 802.11 QoS queue.
ciscoIetfD11QosExtNotifConGroup	1.3.6.1.4.1.9.10.90.2.2.3			Notification control for IEEE 802.11 QoS.
ciscoIetfD11QosExtNotifGroup	1.3.6.1.4.1.9.10.90.2.2.4			This is the notification group for the CISCO-IETF-DOT11-QOS-EXT-MIB.

RFC description

Cisco implementation of IEEE 802.11 QoS extensions (RFC-based); manages wireless LAN quality-of-service parameters and traffic shaping.

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Download CISCO-IETF-DOT11-QOS-EXT-MIB

What Is CISCO-IETF-DOT11-QOS-EXT-MIB?

Supported Devices

Monitoring Examples

What Can Be Monitored

This MIB depends on

Related MIBs

RFC description