| OID symbolic | OID numeric | Type | Access | Description |
|---|
| ciscoLwappLinkTestMIB | 1.3.6.1.4.1.9.9.516 | | | This MIB is intended to be implemented on all those
devices operating as Central controllers, that
terminate the Light Weight Access Point Protocol
tunnel from Cisco Light-weight LWAPP Access Points.
Link Test is performed to learn the radio link quality
between AP and Client. CCX linktest is performed for
CCX clients. With CCX linktest radio link can be
measured in both direction i.e. AP->Client(downLink)
and Client->AP(uplink). When client does not support
CCX or CCX linktest fails,ping is done between AP and
Client. In ping test, only uplink (client->AP) quality
can be measured.
The relationship between the controller and the LWAPP
APs is depicted as follows.
+......+ +......+ +......+ +......+
+ + + + + + + +
+ CC + + CC + + CC + + CC +
+ + + + + + + +
+......+ +......+ +......+ +......+
.. . . .
.. . . .
. . . . .
. . . . .
. . . . .
. . . . .
+......+ +......+ +......+ +......+ +......+
+ + + + + + + + + +
+ AP + + AP + + AP + + AP + + AP +
+ + + + + + + + + +
+......+ +......+ +......+ +......+ +......+
. . . .
. . . . .
. . . . .
. . . . .
. . . . .
+......+ +......+ +......+ +......+ +......+
+ + + + + + + + + +
+ MN + + MN + + MN + + MN + + MN +
+ + + + + + + + + +
+......+ +......+ +......+ +......+ +......+
The LWAPP tunnel exists between the controller and
the APs. The MNs communicate with the APs through
the protocol defined by the 802.11 standard.
LWAPP APs, upon bootup, discover and join one of the
controllers and forward all the 802.11 frames to them
encapsulated inside LWAPP frames.
GLOSSARY
Access Point ( AP )
An entity that contains an 802.11 medium access
control ( MAC ) and physical layer ( PHY ) interface
and provides access to the distribution services via
the wireless medium for associated clients.
LWAPP APs encapsulate all the 802.11 frames in
LWAPP frames and sends them to the controller to which
it is logically connected.
Central Controller ( CC )
The central entity that terminates the LWAPP protocol
tunnel from the LWAPP APs. Throughout this MIB,
this entity also referred to as 'controller'.
Cisco Compatible eXtensions (CCX)
Wireless LAN Access Points (APs) manufactured by Cisco
Systems have features and capabilities beyond those in
related standards (e.g., IEEE 802.11 suite of
standards, Wi-Fi recommendations by WECA, 802.1X
security suite, etc). A number of features provide
higher performance. For example, Cisco AP transmits a
specific Information Element, which the clients adapt
to for enhanced performance. Similarly, a number of
features are implemented by means of proprietary
Information Elements, which Cisco clients
use in specific ways to carry out tasks above and
beyond the standard.Other examples of feature
categories are roaming and power saving.
Light Weight Access Point Protocol ( LWAPP )
This is a generic protocol that defines the
communication between the Access Points and the
Central controller.
Mobile Node ( MN )
A roaming 802.11 wireless device in a wireless
network associated with an access point. Mobile Node
and client are used interchangeably.
Received Signal Strength Indicator ( RSSI )
A measure of the strength of the signal as
observed by the entity that received it,
expressed in 'dbm'.
Signal-Noise Ratio ( SNR )
A measure of the quality of the signal relative
to the strength of noise expressed in 'dB'.
REFERENCE
[1] Wireless LAN Medium Access Control ( MAC ) and
Physical Layer ( PHY ) Specifications.
[2] Draft-obara-capwap-lwapp-00.txt, IETF Light
Weight Access Point Protocol |
| ciscoLwappLinkTestMIBNotifs | 1.3.6.1.4.1.9.9.516.0 | | | |
| ciscoLwappLinkTestMIBObjects | 1.3.6.1.4.1.9.9.516.1 | | | |
| ciscoLwappLinkTestConfig | 1.3.6.1.4.1.9.9.516.1.1 | | | |
| T/F cLLtResponder | 1.3.6.1.4.1.9.9.516.1.1.1 | TruthValue | read-write | This object is used to control the AP's response
to the linktests initiated by the client.
When set to 'true', the AP is expected to respond
to the linktests performed by the client.
The AP won't respond to the linktests initiated by
the client, when this object is set to 'false'. |
| U32 cLLtPacketSize | 1.3.6.1.4.1.9.9.516.1.1.2 | Unsigned32 | read-write | This object indicates the number of bytes to be
sent by the AP to the client in one linktest
packet. |
| U32 cLLtNumberOfPackets | 1.3.6.1.4.1.9.9.516.1.1.3 | Unsigned32 | read-write | This object indicates the number of linktest
packets sent by the AP to the client. |
| U32 cLLtTestPurgeTime | 1.3.6.1.4.1.9.9.516.1.1.4 | Unsigned32 | read-write | This object indicates the duration for which the
results of a particular run of linktest is available
in cLLtClientLtResultsTable from the time of
completion of that run of linktest. At the expiry of
this time after the completion of the linktest, the
entries corresponding to the linktest and the
corresponding results are removed from
cLLtClientLinkTestTable and cLLtClientLtResultsTable
respectively. |
| ciscoLwappLinkTestRun | 1.3.6.1.4.1.9.9.516.1.2 | | | |
| cLLtClientLinkTestTable | 1.3.6.1.4.1.9.9.516.1.2.1 | | not-accessible | This table is used to initiate linktests between
an AP and one of its associated clients. CCX
linktests are done on clients that support CCX. For
all non-CCX clients, ping test is done. Note that
ping test is also done when the CCX linktests fail.
With CCX LinkTest support, the controller can test
the link quality in downstream (direction of
traffic from AP to client) direction by issuing
LinkTest requests towards the client and let client
record in the response packet the RF parameters
like received signal strength, signal-to-noise
etc., of the received request packet.
With ping test only those RF parameters that are
seen by the AP are measured.
User initiates one run of linktest by adding a
row to this table through explicit management
action from the network manager. A row is created
by specifying cLLtClientLtIndex,
cLLtClientLtMacAddress and setting the RowStatus
object to 'createAndGo'. This indicates the
the request made to start the linktest on the
client identified by cLLtClientLtMacAddress.
cLLtClientLtIndex identifies the particular
instance of the test.
The added row is deleted by setting the corresponding
instance of the RowStatus object to 'destroy'. In
case if the agent finds that the time duration
represented by cLLtTestPurgeTime has elapsed since
the completion of the linktest, it proceeds to
delete the row automatically, if the row exists at
that point of time.
The results of the linktest identified by
cLLtClientLtIndex can be obtained from the
queries to cLLtClientLtResultsTable. |
| cLLtClientLinkTestEntry | 1.3.6.1.4.1.9.9.516.1.2.1.1 | | not-accessible | Each entry in this table represents one instance
of the linktest initiated by the user through
a network manager. |
| U32 cLLtClientLtIndex | 1.3.6.1.4.1.9.9.516.1.2.1.1.1 | Unsigned32 | not-accessible | This object uniquely identifies one particular
run of the linktest initiated between the client
identified by cLLtClientLtMacAddress and the AP it
is currently associated with. |
| MAC cLLtClientLtMacAddress | 1.3.6.1.4.1.9.9.516.1.2.1.1.2 | MacAddress | read-create | This object represents the mac address of the client
involved in the particular run of linktest. This
object must be set to a valid value when setting
cLLtClientRowStatus to 'createAndGo' to initiate a
run of linktest. |
| ROW cLLtClientLtRowStatus | 1.3.6.1.4.1.9.9.516.1.2.1.1.3 | RowStatus | read-create | This object is the status column used for creating
and deleting instances of the columnar objects in
this table. |
| cLLtClientLTResultsTable | 1.3.6.1.4.1.9.9.516.1.2.2 | | not-accessible | This table populates the results of the linktests
initiated by the user through the
cLLtClientLinkTestTable.
This table has a sparse dependent relationship
with cLLtClientLinkTestTable. There exists a
row in this table corresponding to the row for
each row in cLLtClientLinkTestTable identified
by cLLtClientLtIndex. A row is added to this
table when user, through the network manager, adds
a row to cLLtClientLinkTestTable and initiates
one run of linktest. A row is deleted by the agent
when the corresponding row of cLLtClientLinkTestTable
is deleted.
The manager is expected to poll cLLtClientLtStatus
to check the status of the linktest. Depending
on the status read through this object
cLLtClientLtStatus, the appropriate columns for
CCX or ping tests are read and linktest statistics
are gathered. |
| cLLtClientLTResultsEntry | 1.3.6.1.4.1.9.9.516.1.2.2.1 | | not-accessible | Each entry in this table represents the results
of the linktest identified by
cLLtClientLtIndex. |
| C32 cLLtClientLtPacketsSent | 1.3.6.1.4.1.9.9.516.1.2.2.1.1 | Counter32 | read-only | The number of packets sent to the target client
specified by cLLtClientLtMacAddress by the AP it is
associated to. |
| C32 cLLtClientLtPacketsRx | 1.3.6.1.4.1.9.9.516.1.2.2.1.2 | Counter32 | read-only | The number of packets sent by the client specified
by cLLtClientLtMacAddress to the AP it is associated
to. |
| C32 cLLtClientLtTotalPacketsLost | 1.3.6.1.4.1.9.9.516.1.2.2.1.3 | Counter32 | read-only | The total number of packets lost during the linktest
in both the upstream and downstream directions. |
| C32 cLLtClientLtApToClientPktsLost | 1.3.6.1.4.1.9.9.516.1.2.2.1.4 | Counter32 | read-only | The number of packets lost during the linktest in
the downstream (direction of traffic from AP to
client) direction. |
| C32 cLLtClientLtClientToApPktsLost | 1.3.6.1.4.1.9.9.516.1.2.2.1.5 | Counter32 | read-only | The number of packets lost during the linktest in
the upstream (direction of traffic from client to AP)
direction. |
| NUM cLLtClientLtMinRoundTripTime | 1.3.6.1.4.1.9.9.516.1.2.2.1.6 | TimeInterval | read-only | The minimum round trip time observed on the
linktest packet between the AP and the client. |
| NUM cLLtClientLtMaxRoundTripTime | 1.3.6.1.4.1.9.9.516.1.2.2.1.7 | TimeInterval | read-only | The maximum round trip time observed on the
linktest packet between the AP and the client. |
| NUM cLLtClientLtAvgRoundTripTime | 1.3.6.1.4.1.9.9.516.1.2.2.1.8 | TimeInterval | read-only | The average round trip time observed on the
linktest packet between the AP and the client. |
| I32 cLLtClientLtUplinkMinSNR | 1.3.6.1.4.1.9.9.516.1.2.2.1.15 | Integer32 | read-only | The minimum SNR value as observed at the
AP. |
| I32 cLLtClientLtUplinkMaxSNR | 1.3.6.1.4.1.9.9.516.1.2.2.1.16 | Integer32 | read-only | The maximum SNR value as observed at the
AP. |
| I32 cLLtClientLtUplinkAvgSNR | 1.3.6.1.4.1.9.9.516.1.2.2.1.17 | Integer32 | read-only | The average SNR value as observed at the
AP. |
| I32 cLLtClientLtDownlinkMinSNR | 1.3.6.1.4.1.9.9.516.1.2.2.1.18 | Integer32 | read-only | The minimum SNR value as observed at the
client. |
| I32 cLLtClientLtDownlinkMaxSNR | 1.3.6.1.4.1.9.9.516.1.2.2.1.19 | Integer32 | read-only | The maximum SNR value as observed at the
client. |
| I32 cLLtClientLtDownlinkAvgSNR | 1.3.6.1.4.1.9.9.516.1.2.2.1.20 | Integer32 | read-only | The average SNR value as observed at the
client. |
| C32 cLLtClientLtTotalTxRetriesAP | 1.3.6.1.4.1.9.9.516.1.2.2.1.21 | Counter32 | read-only | The total number of linktest packet transmission
retries as observed at the AP. |
| C32 cLLtClientLtMaxTxRetriesAP | 1.3.6.1.4.1.9.9.516.1.2.2.1.22 | Counter32 | read-only | The maximum number of linktest packet transmission
retries observed at the AP. |
| C32 cLLtClientLtTotalTxRetriesClient | 1.3.6.1.4.1.9.9.516.1.2.2.1.23 | Counter32 | read-only | The total number of linktest packet transmission
retries at the client. |
| C32 cLLtClientLtMaxTxRetriesClient | 1.3.6.1.4.1.9.9.516.1.2.2.1.24 | Counter32 | read-only | The maximum number of linktest packet transmission
retries observed at the client. |
| INT cLLtClientLtStatus | 1.3.6.1.4.1.9.9.516.1.2.2.1.25 | INTEGER | read-only | This object indicates the status of the linktest
this particular entry corresponds to.
The semantics as follows.
'cLLtClientLtStatusFailed' - This value indicates that
this particular linktest has failed.
'cLLtClientLtCcxStatusInProgress' - This value indicates
that the CCX linktest is in progress.
'cLLtClientLtPngStatusInProgress' - This value indicates
that the Ping-based linktest is in progress.
'cLLtClientLtStatusPingSuccess' - This value indicates
that ping-based linktest between AP and client
has succeeded.
Only the following columns of this table should be
considered for collecting data from the ping
responses.
cLLtClientLtPacketsSent,
cLLtClientLtPacketsRx,
cLLtClientLtUplinkAvgRSSI,
cLLtClientLtUplinkAvgSNR
cLLtClientLtStatusCcxLtSuccess - This value indicates
that CCX linktest done to test the link between the
client and the AP is successful. All the columns of
this table are applicable and valid for collecting
data from the CCX responses. |
| ciscoLwappLinkTestStatus | 1.3.6.1.4.1.9.9.516.1.3 | | | |
| cLLtClientLtDataRateTable | 1.3.6.1.4.1.9.9.516.1.3.1 | | not-accessible | This table provides the results of CCX Link tests
classified on different data rates between AP and
clients.
A row is added to this table automatically by the
agent corresponding to one linktest identified
by cLLtClientLtIndex and deleted when the
corresponding row in cLLtClientLinkTestTable is
deleted. |
| cLLtClientLtDataRateEntry | 1.3.6.1.4.1.9.9.516.1.3.1.1 | | not-accessible | Each entry represents a conceptual row and
populates the number of packets sent in
the linktest identified by cLLtClientLtIndex.
The statistics of the linktest are classified
based on the respective data rates identified
by cLLtClientLtDataRate. |
| OCT cLLtClientLtDataRate | 1.3.6.1.4.1.9.9.516.1.3.1.1.1 | OCTET STRING | not-accessible | This object identifies the rate at which packets
are transmitted. The rates are defined in Mbps
with the following being the possible values.
Rates - 1,2,5.5,6,9,11,12,18,24,36,48,54,108. |
| C32 cLLtClientLtRateDownlinkPktsSent | 1.3.6.1.4.1.9.9.516.1.3.1.1.2 | Counter32 | read-only | The number of packets sent by the AP at the rate
identified by cLLtClientLtDataRate. |
| C32 cLLtClientLtRateUplinkPktsSent | 1.3.6.1.4.1.9.9.516.1.3.1.1.3 | Counter32 | read-only | The number of packets sent by the client at the rate
identified by cLLtClientLtDataRate. |
| ciscoLwappLinkTestMIBConform | 1.3.6.1.4.1.9.9.516.2 | | | |
| ciscoLwappLinkTestMIBCompliances | 1.3.6.1.4.1.9.9.516.2.1 | | | |
| ciscoLwappLinkTestMIBCompliance | 1.3.6.1.4.1.9.9.516.2.1.1 | | | The compliance statement for the SNMP entities that
implement the ciscoLwappLinkTestMIB module. |
| ciscoLwappLinkTestMIBGroups | 1.3.6.1.4.1.9.9.516.2.2 | | | |
| cLLinkTestConfigGroup | 1.3.6.1.4.1.9.9.516.2.2.1 | | | This collection of objects represent the linktest
parameters for use during the various of the
tests. |
| cLLinkTestRunsGroup | 1.3.6.1.4.1.9.9.516.2.2.2 | | | This collection of objects is used to initiate
linktests and retrieve the results of the respective
runs of the tests. |
| cLLinkTestStatusGroup | 1.3.6.1.4.1.9.9.516.2.2.3 | | | This collection of objects provide information
about the linktest results. |
