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show ap spectrum device-history

show ap spectrum device-history {ap-name <ap-name> | ip-addr <ip-addr> | ip6-addr <ip6-addr>} [freq-band {2.4ghz | 5ghz}] [type {audio | bluetooth | cordless-ff-phone | cordless-fh-base | cordless-fh-network | generic-ff | generic-fh | generic-interferer | microwave | microwave-inverter |video | xbox}]

Description

This command shows the history of the last 256 non-Wi-FiWi-Fi is a technology that allows electronic devices to connect to a WLAN network, mainly using the 2.4 GHz and 5 GHz radio bands. Wi-Fi can apply to products that use any 802.11 standard. devices.

Syntax

Parameter

Description

ap-name <ap-name>

Name of the spectrum monitor or hybrid AP for which you want to view spectrum information.

ip-addr <ip-addr>

IP address of the spectrum monitor or hybrid AP for which you want to view spectrum information.

ip6-addr <ip6-addr>

IPv6 address of the spectrum monitor or hybrid AP for which you want to view spectrum information.

freq-band {2.4ghz | 5ghz}

View information for a specific radio type, either 2.4 GHzGigahertz. or 5 GHzGigahertz..

type

Show information for one type of device only by specifying a non-Wi-FiWi-Fi is a technology that allows electronic devices to connect to a WLAN network, mainly using the 2.4 GHz and 5 GHz radio bands. Wi-Fi can apply to products that use any 802.11 standard. device.

audio

View information for audio devices seen by the spectrum device.

bluetooth

View information for bluetooth devices seen by the spectrum device.

NOTE: This option is available only for 2.4 GHzGigahertz. spectrum devices.

cordless-ff-phone

View information for frequency-hopping cordless phones seen by the spectrum device.

cordless-fh-base

View information for frequency-hopping cordless phone bases seen by the spectrum device.

cordless-fh-network

View information for frequency-hopping cordless network devices seen by the spectrum device.

generic-ff

View information for generic fixed-frequency devices seen by the spectrum device.

generic-fh

View information for generic frequency-hopping devices seen by the spectrum device.

generic-interferer

Show only generic interfering devices.

microwave

View information for microwaveElectromagnetic energy with a frequency higher than 1 GHz, corresponding to wavelength shorter than 30 centimeters.-emitting devices seen by the spectrum device.

NOTE: This option is available only for 2.4 GHzGigahertz. spectrum devices.

microwave-inverter

View information for inverter microwaveElectromagnetic energy with a frequency higher than 1 GHz, corresponding to wavelength shorter than 30 centimeters. devices seen by the spectrum device.

NOTE: This option is available only for 2.4 GHzGigahertz. spectrum devices.

video

View information for video devices seen by the spectrum device.

xbox

View information for Xbox devices seen by the spectrum device.

NOTE: This option is available only for 2.4 GHzGigahertz. spectrum devices.

Usage Guidelines

Use this command to view channel, signal, and duty-cycle information as well as addor delete times for the last 256 devices seen by a spectrum monitor or hybrid AP.

Non-Wi-Fi Interferers

The following table describes each type of of non-Wi-FiWi-Fi is a technology that allows electronic devices to connect to a WLAN network, mainly using the 2.4 GHz and 5 GHz radio bands. Wi-Fi can apply to products that use any 802.11 standard. interferer detected by a spectrum monitor or hybrid AP. Note also that a hybrid AP on a 20 MHzMegahertz channel will see 40 MHzMegahertz Wi-FiWi-Fi is a technology that allows electronic devices to connect to a WLAN network, mainly using the 2.4 GHz and 5 GHz radio bands. Wi-Fi can apply to products that use any 802.11 standard. data as non-Wi-FiWi-Fi is a technology that allows electronic devices to connect to a WLAN network, mainly using the 2.4 GHz and 5 GHz radio bands. Wi-Fi can apply to products that use any 802.11 standard. data.

Non-Wi-Fi Interferer Type

Description

Bluetooth

Any device that uses the Bluetooth protocol to communicate in the 2.4 GHzGigahertz. bandBand refers to a specified range of frequencies of electromagnetic radiation. is classified as a Bluetooth device. Bluetooth uses a frequency hopping protocol.

Fixed Frequency (Audio)

Some audio devices such as wireless speakers and microphones also use fixed frequency to continuously transmit audio. These devices are classified as Fixed Frequency (Audio).

Fixed Frequency (Cordless Phones)

Some cordless phones use a fixed frequency to transmit data (much like the fixed frequency video devices). These devices are classified as Fixed Frequency (Cordless Phones).

Fixed Frequency (Video)

Video transmitters that continuously transmit video on a single frequency are classified as Fixed Frequency (Video). These devices typically have close to a 100% duty cycle. These types of devices may be used for video surveillance, TV or other video distribution, and similar applications.

Fixed Frequency (Other)

All other fixed frequency devices that do not fall into one of the above categories are classified as Fixed Frequency (Other). Note that the RFRadio Frequency. RF refers to the electromagnetic wave frequencies within a range of 3 kHz to 300 GHz, including the frequencies used for communications or Radar signals. signatures of the fixed frequency audio, video and cordless phone devices are very similar and that some of these devices may be occasionally classified as Fixed Frequency (Other).

Frequency Hopper (Cordless Base)

Frequency hopping cordless phone base units transmit periodic beacon-like frames at all times. When the handsets are not transmitting (i.e., no active phone calls), the cordless base is classified as Frequency Hopper (Cordless Base).

Frequency Hopper (Cordless Network)

When there is an active phone call and one or more handsets are part of the phone conversation, the device is classified as Frequency Hopper (Cordless Network). Cordless phones may operate in 2.4 GHzGigahertz. or 5 GHzGigahertz. bandsBand refers to a specified range of frequencies of electromagnetic radiation.. Some phones use both 2.4 GHzGigahertz. and 5 GHzGigahertz. bandsBand refers to a specified range of frequencies of electromagnetic radiation. (for example, 5 GHzGigahertz. for Base-to-handset and 2.4 GHzGigahertz. for Handset-to-base). These phones may be classified as unique Frequency Hopper devices on both bandsBand refers to a specified range of frequencies of electromagnetic radiation..

Frequency Hopper (Xbox)

The Microsoft Xbox device uses a frequency hopping protocol in the 2.4 GHzGigahertz. bandBand refers to a specified range of frequencies of electromagnetic radiation.. These devices are classified as Frequency Hopper (Xbox).

Frequency Hopper (Other)

When the classifier detects a frequency hopper that does not fall into one of the above categories, it is classified as Frequency Hopper (Other). Some examples include IEEEInstitute of Electrical and Electronics Engineers. 802.11802.11 is an evolving family of specifications for wireless LANs developed by a working group of the Institute of Electrical and Electronics Engineers (IEEE). 802.11 standards use the Ethernet protocol and Carrier Sense Multiple Access with collision avoidance (CSMA/CA) for path sharing. FHSSFrequency Hopping Spread Spectrum. FHSS is transmission technique that allows modulation and transmission of a data signal by rapidly switching a carrier among many frequency channels in a random but predictable sequence. See also DSSS. devices, game consoles and cordless or hands-free devices that do not use one of the known cordless phone protocols.

MicrowaveElectromagnetic energy with a frequency higher than 1 GHz, corresponding to wavelength shorter than 30 centimeters.

Common residential microwaveElectromagnetic energy with a frequency higher than 1 GHz, corresponding to wavelength shorter than 30 centimeters. ovens with a single magnetron are classified as a Microwave. These types of microwaveElectromagnetic energy with a frequency higher than 1 GHz, corresponding to wavelength shorter than 30 centimeters. ovens may be used in cafeterias, break rooms, dormitories and similar environments. Some industrial, healthcare or manufacturing environments may also have other equipment that behave like a microwaveElectromagnetic energy with a frequency higher than 1 GHz, corresponding to wavelength shorter than 30 centimeters. and may also be classified as a MicrowaveElectromagnetic energy with a frequency higher than 1 GHz, corresponding to wavelength shorter than 30 centimeters. device.

MicrowaveElectromagnetic energy with a frequency higher than 1 GHz, corresponding to wavelength shorter than 30 centimeters. (Inverter)

Some newer-model microwaveElectromagnetic energy with a frequency higher than 1 GHz, corresponding to wavelength shorter than 30 centimeters. ovens have the inverter technology to control the power output and these microwaveElectromagnetic energy with a frequency higher than 1 GHz, corresponding to wavelength shorter than 30 centimeters. ovens may have a duty cycle close to 100%. These microwaveElectromagnetic energy with a frequency higher than 1 GHz, corresponding to wavelength shorter than 30 centimeters. ovens are classified as Microwave (Inverter). Dual-magnetron industrial microwaveElectromagnetic energy with a frequency higher than 1 GHz, corresponding to wavelength shorter than 30 centimeters. ovens with higher duty cycle may also be classified as MicrowaveElectromagnetic energy with a frequency higher than 1 GHz, corresponding to wavelength shorter than 30 centimeters. (Inverter). As in the MicrowaveElectromagnetic energy with a frequency higher than 1 GHz, corresponding to wavelength shorter than 30 centimeters. category described above, there may be other equipment that behave like inverter microwavesElectromagnetic energy with a frequency higher than 1 GHz, corresponding to wavelength shorter than 30 centimeters. in some industrial, healthcare or manufacturing environments. Those devices may also be classified as MicrowaveElectromagnetic energy with a frequency higher than 1 GHz, corresponding to wavelength shorter than 30 centimeters. (Inverter).

Generic Interferer

Any non-frequency hopping device that does not fall into one of the other categories described in this table is classified as a Generic Interferer. For example a MicrowaveElectromagnetic energy with a frequency higher than 1 GHz, corresponding to wavelength shorter than 30 centimeters.-like device that does not operate in the known operating frequencies used by the MicrowaveElectromagnetic energy with a frequency higher than 1 GHz, corresponding to wavelength shorter than 30 centimeters. ovens may be classified as a Generic Interferer. Similarly wide-bandBand refers to a specified range of frequencies of electromagnetic radiation. interfering devices may be classified as Generic Interferers.

Example

The following is an example for executing this command:

(host) [mynode] #show ap spectrum device-history ap-name ap-205 type audio

The output of this example shows details for fixed-frequency video devices seen by a spectrum monitor or hybrid AP radio.

host) [mynode] #show ap spectrum device-history ap-name ap123 freq-band 5ghz type video

 

Non-Wifi Device History Table

-----------------------------

Type ID Cfreq(Khz) Bandwidth(KHz) Channels-affected Signal-strength Duty-cycle

---- -- ----- --------- ----------------- --------------- ----------

Add-time Delete-time

-------- -----------

Video 1 5745312 6000 149 76 99

2010-05-16 20:07:08 -

Video 2 5745312 6000 149 75 99

2010-05-16 20:07:39 2010-05-17 16:50:24

Video 3 5745312 6000 149 74 99

2010-05-16 20:20:25 2010-05-16 20:20:36

Video 4 5745312 6000 149 76 99

2010-05-16 20:32:44 2010-05-16 20:33:07

Video 5 5742031 6000 149 79 99

2010-05-16 20:33:43 2010-05-16 20:33:53

Video 6 5745312 6000 149 75 99

2010-05-16 20:34:08 2010-05-16 20:34:20

The output of this command includes the following information:

Column

Description

Type

Device type. This parameter can be any of the following:

audio FF (fixed frequency)

bluetooth

cordless base FH (frequency hopper)

cordless phone FF (fixed frequency

cordless network FH (frequency hopper)

generic FF (fixed frequency

generic FH (frequency hopper)

generic interferer

microwaveElectromagnetic energy with a frequency higher than 1 GHz, corresponding to wavelength shorter than 30 centimeters.

microwaveElectromagnetic energy with a frequency higher than 1 GHz, corresponding to wavelength shorter than 30 centimeters. inverter

video

xbox

NOTE: For additional details about non-Wi-FiWi-Fi is a technology that allows electronic devices to connect to a WLAN network, mainly using the 2.4 GHz and 5 GHz radio bands. Wi-Fi can apply to products that use any 802.11 standard. device types shown in this table, see Non-Wi-Fi Interferers.

ID

ID number assigned to the device by the spectrum monitor or hybrid AP radio. Spectrum monitors and hybrid APs assign a unique spectrum ID per device type.

Cfreq

Center frequency of the signal sent from the device.

Bandwidth

Channel bandwidth used by the device, in KHz.

Channels-affected

Radio channels affected by the wireless device, in KHz.

Signal-strength

Strength of the signal sent from the device, in dBmDecibel-Milliwatts. dBm is a logarithmic measurement (integer) that is typically used in place of mW to represent receive-power level. AMP normalizes all signals to dBm, so that it is easy to evaluate performance between various vendors..

Duty-cycle

Device duty cycle. This value represents the percent of time the device broadcasts on the specified channel or frequency.

Add-time

Time at which the device was first detected.

Delete-time

Time at which the device was aged out.

Related Commands

Command

Description

ap spectrum local-override

Converts an AP or AMAir Monitor. AM is a mode of operation supported on wireless APs. When an AP operates in the Air Monitor mode, it enhances the wireless networks by collecting statistics, monitoring traffic, detecting intrusions, enforcing security policies, balancing wireless traffic load, self-healing coverage gaps, and more. However, clients cannot connect to APs operating in the AM mode. into a spectrum monitor by adding it to the spectrum local-override list.

rf dot11a-radio-profilemodespectrum-mode

Sets an 802.11a802.11a provides specifications for wireless systems. Networks using 802.11a operate at radio frequencies in the 5 GHz band. The specification uses a modulation scheme known as orthogonal frequency-division multiplexing (OFDM) that is especially well suited to use in office settings. The maximum data transfer rate is 54 Mbps. radio so that the device operates as a spectrum monitor, and can send spectrum analysis data to a desktop or laptop client.

rf dot11g-radio-profilemodespectrum-mode

Sets an 802.11g802.11g offers transmission over relatively short distances at up to 54 Mbps, compared with the 11 Mbps theoretical maximum of 802.11b standard. 802.11g employs Orthogonal Frequency Division Multiplexing (OFDM), the modulation scheme used in 802.11a, to obtain higher data speed. Computers or terminals set up for 802.11g can fall back to speed of 11 Mbps, so that 802.11b and 802.11g devices can be compatible within a single network. radio so that the device operates as a spectrum monitor, and can send spectrum analysis data to a desktop or laptop client.

Command History

Release

Modification

ArubaOS 8.0.0.0

Command introduced.

Command Information

Platforms

License

Command Mode

All platforms

Base operating system.

Enable or Config mode on the managed device or controller where the AP terminates.

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