This MIB module provides network management support for QoS on wireless LAN devices. All objects defined in this MIB are listed (object names have been modified to adopt Cisco MIB object naming convention) in the IEEE 802.11E November 2001 draft. The original names of the objects in the standard are included in the REFERENCE clauses. The standard is still under development. The standard IEEE 802.11E MIB can replace some of the MIB objects in this MIB once the standard is finalized.
GLOSSARY and ACRONYMS
Access point (AP) Transmitter/receiver (transceiver) device that commonly connects and transports data between a wireless network and a wired network.
AIFS Arbitration Interframe Space. It is one of the five different IFSs defined to provide priority levels for access to the wireless media. It shall be used by QSTAs to transmit data type frames (MPDUs) and management type frames (MMPDUs).
BSS IEEE 802.11 Basic Service Set (Radio Cell). The BSS of an AP comprises of the stations directly associating with the AP.
CW Contention Window. It is the time period between radio signal collisions caused by simultaneous broadcast from multiple wireless stations. The contention window is used to compute the random backoff of the radio broadcast. The IEEE 802.11b does not specify the unit for the time period.
CWP Factor Contention Window Persistence Factor. It indicates the factor used in computing new CW values on every 15 unsuccessful attempt to transmit an MPDU or an MMPDU of a traffic category. It is a scaling factor in units of 1/16 ths.
IFS Inter-Frame Space is the time interval between frames. A STA shall determine that the medium is idle through the use of the carrier sense function for the interval specified. In other words, the size of the IFS determines the length of the backoff time interval of a device to the medium. In this case, the medium is the radio wave spectrum. The IEEE 802.11b standard does not specify any unit for the time interval.
BSS IEEE 802.11 Basic Service Set (Radio Cell). The MAC Medium Access Control. Layer 2 in the network model.
MPDU MAC protocol data unit. The unit of data exchanged between two peer MAC entities using the services of the physical layer (PHY).
MMPDU Management type MAC protocol data unit.
MSDU MAC service data unit. Information that is delivered as a unit between MAC service access points.
QBSS Quality of service basic service set.
QSTA QoS station.
STA (WSTA) A non-AP IEEE 802.11 wireless station.
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).
InterfaceIndexA unique value, greater than zero, for each interface or interface sub-layer in the managed system. It is recommended that values are assigned contiguously starting from 1. The value for each interface sub-layer must remain constant at least from one re-initialization of the entity's network management system to the next re-initialization. (1..2147483647) · Integer32 · hint d
A unique value, greater than zero, for each interface. It is recommended that values are assigned contiguously starting from 1. The value for each interface sub-layer must remain constant at least from one re-initialization of the entity's network management system to the next re- initialization.
cid11TrafficCategory
1.3.6.1.4.1.9.10.89.1.1.1.1.1
Cid11QosTrafficCategory0 = bestEffort1 = background2 = spare3 = excellentEffort4 = controlledLoad5 = interactiveVideo6 = interactiveVoice7 = networkControlThis is the 802.1D IP traffic category. There are a total of 8 categories. Each category can be mapped to a 802.1P priority level of IP packets. The priority levels are implemented using the Precedence Bits in the IP packets. The default priority levels start from 'background', the lowest, to the highest, 'networkControl':
background(1) - background traffic
(lowest priority)
spare(2) - spare traffic
(2nd lowest)
bestEffort(0) - best effort delivery
(this is the default type for all traffic)
excellentEffort(3) - execellent effect
controlledLoad(4) - controlled load
interactiveVideo(5) - video traffic
interactiveVoice(6) - voice traffic
networkControl(7) - network control
packets (highest).Reference: IEEE 802.1D-1998, Annex H.2.10 and IEEE 802.11E-2001, section 7.5.1. · Integer32
This object specifies the traffic category.
cid11CWmin
1.3.6.1.4.1.9.10.89.1.1.1.1.2
Unsigned32 (0..1023)
Reference: dot11CWmin, IEEE 802.11E-2001/D1.
This specifies the minimum contention window value for a traffic category. The backoff interval of a radio is calculated from a pseudo random integer drawn from a uniform distribution over the interval [1, CW+1], where CW is an integer within the range of values of the cid11CWmin and cid11CWmax.
cid11CWmax
1.3.6.1.4.1.9.10.89.1.1.1.1.3
Unsigned32 (0..1023)
Reference: dot11CWmax, IEEE 802.11E-2001/D1.
This object specifies the maximum contention window value for a traffic category. The backoff interval of a radio is calculated from a pseudo random integer drawn from a uniform distribution over the interval [1, CW+1], where CW is an integer within the range of values of the cid11CWmin and cid11CWmax.
cid11CWPFactor
1.3.6.1.4.1.9.10.89.1.1.1.1.4
Unsigned32 (0..255)
Reference: dot11CWPFactor, IEEE 802.11E-2001/D1.
This object specifies the contention window persistence factor for a traffic category.
cid11AIFS
1.3.6.1.4.1.9.10.89.1.1.1.1.5
Unsigned32 (2..10)
Reference: dot11AIFS, IEEE 802.11E-2001/D1.
This object specifies the AIFS for a traffic category.
cid11TrafficPriority
1.3.6.1.4.1.9.10.89.1.1.1.1.6
Unsigned32 (0..7)
Reference: dot11PriorityMap, IEEE 802.11E-2001/D1 and IEEE 802.1D-1998, Annex H.2.10.
This object specifies the actual priority this agent is going to use to delivery packets for a traffic category. This allows multiple traffic categories to map to the same priority level. The priority 7 is the highest priority and priority 1 is the lowest priority, with priority 0, which is used for best effort traffic, ordered between priority 3 and priority 2. The resulting default ordering is {7,6,5,4,3,0,2,1}. The default value is same as the traffic category value.
This object specifies the MSDU lifetime for a traffic category.
cid11QosSupportTable
1.3.6.1.4.1.9.10.89.1.1.2
Index: ifIndex
This table contains the attributes indicating QoS support information on the IEEE 802.11 interfaces of the device. 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).
InterfaceIndexA unique value, greater than zero, for each interface or interface sub-layer in the managed system. It is recommended that values are assigned contiguously starting from 1. The value for each interface sub-layer must remain constant at least from one re-initialization of the entity's network management system to the next re-initialization. (1..2147483647) · Integer32 · hint d
A unique value, greater than zero, for each interface. It is recommended that values are assigned contiguously starting from 1. The value for each interface sub-layer must remain constant at least from one re-initialization of the entity's network management system to the next re- initialization.
cid11QosOptionImplemented
1.3.6.1.4.1.9.10.89.1.1.2.1.1
TruthValue1 = true2 = falseRepresents a boolean value. · Integer32
This object shows the number of QoS priority queues are available on this IEEE 802.11 network interface.
cid11QueueTable
1.3.6.1.4.1.9.10.89.1.2.1
Index: ifIndex · cid11TrafficCategory
This table contains the queue weight and size information and statistics for each traffic category on each the IEEE 802.11 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).
InterfaceIndexA unique value, greater than zero, for each interface or interface sub-layer in the managed system. It is recommended that values are assigned contiguously starting from 1. The value for each interface sub-layer must remain constant at least from one re-initialization of the entity's network management system to the next re-initialization. (1..2147483647) · Integer32 · hint d
A unique value, greater than zero, for each interface. It is recommended that values are assigned contiguously starting from 1. The value for each interface sub-layer must remain constant at least from one re-initialization of the entity's network management system to the next re- initialization.
This is the peak QoS priority queue size for the traffic category.
cid11QosStatisticsTable
1.3.6.1.4.1.9.10.89.1.3.1
Index: ifIndex · cid11TrafficCategory
This table contains the QoS statistics by traffic category on each the IEEE 802.11 network 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).
InterfaceIndexA unique value, greater than zero, for each interface or interface sub-layer in the managed system. It is recommended that values are assigned contiguously starting from 1. The value for each interface sub-layer must remain constant at least from one re-initialization of the entity's network management system to the next re-initialization. (1..2147483647) · Integer32 · hint d
A unique value, greater than zero, for each interface. It is recommended that values are assigned contiguously starting from 1. The value for each interface sub-layer must remain constant at least from one re-initialization of the entity's network management system to the next re- initialization.
This is the counter for Qos frames transmitted from this IEEE 802.11 interface for the traffic category.
cid11QosIfStatisticsTable
1.3.6.1.4.1.9.10.89.1.3.2
Index: ifIndex
This table contains the attributes indicating QoS statistics on the IEEE 802.11 interfaces of the device. 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).
InterfaceIndexA unique value, greater than zero, for each interface or interface sub-layer in the managed system. It is recommended that values are assigned contiguously starting from 1. The value for each interface sub-layer must remain constant at least from one re-initialization of the entity's network management system to the next re-initialization. (1..2147483647) · Integer32 · hint d
A unique value, greater than zero, for each interface. It is recommended that values are assigned contiguously starting from 1. The value for each interface sub-layer must remain constant at least from one re-initialization of the entity's network management system to the next re- initialization.