DLB-802DOT11-EXT-MIB

All MIBs › DLB-802DOT11-EXT-MIB

Organization: Deliberant

Last Updated: 2010-03-31

Category: Standard: IEEE 802, Technology: Wireless

Description: DLB 802.11 extension MIB providing vendor-specific extensions to IEEE 802.11 wireless LAN management objects.

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What Is DLB-802DOT11-EXT-MIB?

DLB-802DOT11-EXT-MIB is a vendor-specific MIB from Deliberant, a manufacturer of outdoor wireless bridge and access point equipment, providing vendor extensions on top of the standard IEEE 802.11 wireless LAN MIB. It exposes per-radio-interface configuration such as operating mode, protocol, SSID, country code, RF frequency/channel, channel bandwidth, and transmit power, indexed by a parent interface reference. It supports monitoring both configuration correctness and RF/hardware status of the device: verifying channel/frequency settings match the intended plan, and that transmit power is within expected or legal limits, helps catch misconfiguration or radio hardware issues affecting wireless link quality. It explicitly extends the standard IEEE802dot11-MIB, depending on that base standard for core 802.11 semantics. It is typically deployed on Deliberant outdoor point-to-point/point-to-multipoint wireless bridges and access points used in WISP and long-range wireless network deployments. Engineers can download the DLB-802DOT11-EXT-MIB file directly to load it into their MIB browser.

IPNetwork Monitor allows you to monitor SNMP objects defined in DLB-802DOT11-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

Deliberant outdoor wireless bridge/access point

Monitoring Examples

An admin would poll dlbDot11IfConfTable entries (indexed by dlbDot11IfParentIndex) to check dlbDot11IfMode, dlbDot11IfChannel, and dlbDot11IfTxPower across a set of radios, catching a radio that reverted to a default channel or reduced transmit power after a reboot. dlbDot11IfESSID and dlbDot11IfAccessPoint would be checked to confirm a client radio associated with the intended access point rather than a neighboring network. dlbDot11Notifs would deliver traps for events such as a change in link or association state.

What Can Be Monitored

radio operating mode
SSID/ESSID
RF channel and frequency
channel bandwidth
transmit power
associated access point

Imported Objects

From DELIBERANT-MIB

dlbMgmt

OBJECT-IDENTITY

From IF-MIB

InterfaceIndex
ifIndex	OBJECT-TYPE
ifPhysAddress	OBJECT-TYPE

From SNMPv2-MIB

sysLocation

OBJECT-TYPE

From SNMPv2-SMI

Counter32
Gauge32
Integer32
MODULE-IDENTITY
NOTIFICATION-TYPE
OBJECT-TYPE

From SNMPv2-TC

MacAddress
TruthValue

How to Use in IPNetwork Monitor

Example using dlbDot11IfRxInvalidCrypt OID:

Select a Deliberant outdoor wireless bridge/access point 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 dlbDot11IfRxInvalidCrypt 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. It reports the number of received packets the hardware was unable to decrypt. 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
dlb802dot11ExtMIB	1.3.6.1.4.1.32761.3.5			The Deliberant 802.11 Extension MIB.
dlb802dot11ExtMIBObjects	1.3.6.1.4.1.32761.3.5.1
dlbDot11Notifs	1.3.6.1.4.1.32761.3.5.1.0
NTF dlbFrequencyChange	1.3.6.1.4.1.32761.3.5.1.0.1			This notification is sent on frequency change.
NTF dlbNoiseThresholdReached	1.3.6.1.4.1.32761.3.5.1.0.2			This notification is sent when noise becomes bigger than threshold.
NTF dlbRemoteNodeConnected	1.3.6.1.4.1.32761.3.5.1.0.3			This notification is sent when remote node associates.
NTF dlbRemoteNodeDisconnected	1.3.6.1.4.1.32761.3.5.1.0.4			This notification is sent when remote node dissasociates.
NTF dlbLinkQualThresholdReached	1.3.6.1.4.1.32761.3.5.1.0.5			This notification is sent when link quality crosses the specified threshold.
dlbDot11Info	1.3.6.1.4.1.32761.3.5.1.1
dlbDot11Conf	1.3.6.1.4.1.32761.3.5.1.2
dlbDot11IfConfTable	1.3.6.1.4.1.32761.3.5.1.2.1		not-accessible	Wireless interface configuration table.
dlbDot11IfConfEntry	1.3.6.1.4.1.32761.3.5.1.2.1.1		not-accessible	Wireless interface configuration table entry.
NUM dlbDot11IfParentIndex	1.3.6.1.4.1.32761.3.5.1.2.1.1.1	InterfaceIndex	read-only	Wireless interface's parent index, which corresponds to ifIndex in MIB-II interfaces table. This is only applicable if the interface is virtual and it is created under some other interface, like it is for Atheros cards when using MadWiFi driver, where parent interfaces are wifi0, wifi1, etc.
OCT dlbDot11IfProtocol	1.3.6.1.4.1.32761.3.5.1.2.1.1.2	OCTET STRING	read-only	Protocol string, for example 'IEEE 802.11g'.
INT dlbDot11IfMode	1.3.6.1.4.1.32761.3.5.1.2.1.1.3	INTEGER	read-only	Wireless interface operation mode
OCT dlbDot11IfESSID	1.3.6.1.4.1.32761.3.5.1.2.1.1.4	OCTET STRING	read-only	ESSID
MAC dlbDot11IfAccessPoint	1.3.6.1.4.1.32761.3.5.1.2.1.1.5	MacAddress	read-only	Access point's MAC address if working in managed mode and connected. Current interface's MAC address, when working in master mode.
I32 dlbDot11IfCountryCode	1.3.6.1.4.1.32761.3.5.1.2.1.1.6	Integer32	read-only	Country code.
I32 dlbDot11IfFrequency	1.3.6.1.4.1.32761.3.5.1.2.1.1.7	Integer32	read-only	Current frequency as reported by driver.
I32 dlbDot11IfChannel	1.3.6.1.4.1.32761.3.5.1.2.1.1.8	Integer32	read-only	Channel number.
I32 dlbDot11IfChannelBandwidth	1.3.6.1.4.1.32761.3.5.1.2.1.1.9	Integer32	read-only	Channel bandwidth.
G32 dlbDot11IfTxPower	1.3.6.1.4.1.32761.3.5.1.2.1.1.10	Gauge32	read-only	Transmit power in dBm.
G32 dlbDot11IfBitRate	1.3.6.1.4.1.32761.3.5.1.2.1.1.11	Gauge32	read-only	Transmission bitrate.
G32 dlbDot11IfLinkQuality	1.3.6.1.4.1.32761.3.5.1.2.1.1.12	Gauge32	read-only	Link quality value.
G32 dlbDot11IfMaxLinkQuality	1.3.6.1.4.1.32761.3.5.1.2.1.1.13	Gauge32	read-only	Maximum possible link quality value for current wireless card.
I32 dlbDot11IfSignalLevel	1.3.6.1.4.1.32761.3.5.1.2.1.1.14	Integer32	read-only	Signal level.
I32 dlbDot11IfNoiseLevel	1.3.6.1.4.1.32761.3.5.1.2.1.1.15	Integer32	read-only	Noise level.
G32 dlbDot11IfAssocNodeCount	1.3.6.1.4.1.32761.3.5.1.2.1.1.16	Gauge32	read-only	Number of associated nodes when working in access point mode. 1 - if associated to remote access point in client mode.
dlbDot11Stats	1.3.6.1.4.1.32761.3.5.1.3
dlbDot11IfErrStatsTable	1.3.6.1.4.1.32761.3.5.1.3.1		not-accessible	Wireless interface statistics table.
dlbDot11IfErrStatsEntry	1.3.6.1.4.1.32761.3.5.1.3.1.1		not-accessible	Wireless interface statistics table entry.
C32 dlbDot11IfRxInvalidNWID	1.3.6.1.4.1.32761.3.5.1.3.1.1.1	Counter32	read-only	Number of received packets with invalid NWID/ESSID. Increasing value usually means that there are other stations transmitting on the same channel or adjacent channels.
C32 dlbDot11IfRxInvalidCryptEx	1.3.6.1.4.1.32761.3.5.1.3.1.1.2	Counter32	read-only	Number of received packets the hardware was unable to decrypt.
C32 dlbDot11IfRxInvalidFrag	1.3.6.1.4.1.32761.3.5.1.3.1.1.3	Counter32	read-only	Number of received packets that were missing link layer fragments for complete re-assembly.
C32 dlbDot11IfTxExcessiveRetries	1.3.6.1.4.1.32761.3.5.1.3.1.1.4	Counter32	read-only	Number of packets hardware failed to deliver.
C32 dlbDot11IfInvalidMisc	1.3.6.1.4.1.32761.3.5.1.3.1.1.5	Counter32	read-only	Other packets lost in relation with specific wireless operations.
C32 dlbDot11IfMissedBeacons	1.3.6.1.4.1.32761.3.5.1.3.1.1.6	Counter32	read-only	Number of beacons that should have been sent by remote access point but were not received. Increasing number usually means that communicating peers moved out of range.
dlbDot11RemoteNodeStatsTable	1.3.6.1.4.1.32761.3.5.1.3.2		not-accessible	Remote node statistics table. This table shows statistics for associated or already disconnected clients on wireless interfaces which are operating in access point mode. For interfaces operating in client mode and associated to remote access point information about access point is shown.
dlbDot11RemoteNodeStatsEntry	1.3.6.1.4.1.32761.3.5.1.3.2.1		not-accessible	Wireless remote node statistics table entry.
MAC dlbDot11RmtNodeMacAddress	1.3.6.1.4.1.32761.3.5.1.3.2.1.1	MacAddress	read-only	Remote node MAC address.
T/F dlbDot11RmtNodeAssociated	1.3.6.1.4.1.32761.3.5.1.3.2.1.2	TruthValue	read-only	Remote node is currently associated.
C32 dlbDot11RmtNodeTxBytes	1.3.6.1.4.1.32761.3.5.1.3.2.1.3	Counter32	read-only	Bytes transmitted to remote node. This object is optional.
C32 dlbDot11RmtNodeRxBytes	1.3.6.1.4.1.32761.3.5.1.3.2.1.4	Counter32	read-only	Bytes received from remote node. This object is optional.
I32 dlbDot11RmtNodeAssocTime	1.3.6.1.4.1.32761.3.5.1.3.2.1.5	Integer32	read-only	UNIX timestamp of the association. This object is optional.
I32 dlbDot11RmtNodeDisassocTime	1.3.6.1.4.1.32761.3.5.1.3.2.1.6	Integer32	read-only	UNIX timestamp of the disassociation (if remote node recently dissasociated). This object is optional.

RFC description

Vendor-private MIB providing extended 802.11 wireless management objects for DLB network devices beyond IEEE standard definitions.

Start monitoring Deliberant outdoor wireless bridge/access point with a free 30-day trial of IPNetwork Monitor. Import MIBs, browse SNMP OIDs, create custom SNMP monitors, configure alerts, and monitor any SNMP-enabled network device from a single console.

Download DLB-802DOT11-EXT-MIB