You are here: Home > CLI Commands > Just_CLI_Topics > show ap spectrum channel-metrics

show ap spectrum channel-metrics

show ap spectrum channel-metrics {ap-name <ap-name>|ip-addr <ip-addr> | ip6-addr <ip6-addr>} [freq-band {2.4ghz | 5ghz}]

Description

This command shows channel quality, availability, and utilization metrics as seen by a spectrum monitor.

Syntax

Parameter

Description

ap-name <ap-name>

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

ip-addr <ip-addr>

IP address of the spectrum monitor.

ip6-addr <ip6-addr>

IPv6 address of the spectrum monitor.

freq-band {2.4ghz | 5ghz}

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

Usage Guideline

This chart displays channel utilization data, showing the percentage of each channel that is currently being used by 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, and the percentage of each channel being used by 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 and 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. adjacent channel interference (ACIAdjacent Channel Interference. ACI refers to interference or interruptions detected on a broadcasting channel, caused by too much power on an adjacent channel in the spectrum.).

 

 

ACIAdjacent Channel Interference. ACI refers to interference or interruptions detected on a broadcasting channel, caused by too much power on an adjacent channel in the spectrum. refers to the interference on a channel created by a transmitter operating in an adjacent channel. A transmitter on a nonadjacent or partially overlapping channel may also cause interference, depending on the transmit power of the interfering transmitter and/or the distance between the devices. In general, ACIAdjacent Channel Interference. ACI refers to interference or interruptions detected on a broadcasting channel, caused by too much power on an adjacent channel in the spectrum. may be caused by a 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. transmitter or 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. interferer. However, whenever the term ACIAdjacent Channel Interference. ACI refers to interference or interruptions detected on a broadcasting channel, caused by too much power on an adjacent channel in the spectrum. appears in Spectrum Analysis graphs, it refers to the ACIAdjacent Channel Interference. ACI refers to interference or interruptions detected on a broadcasting channel, caused by too much power on an adjacent channel in the spectrum. caused by 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. transmitters. The channel utilization option in the Channel Metrics Chart shows the percentage of the channel utilization due to both ACIAdjacent Channel Interference. ACI refers to interference or interruptions detected on a broadcasting channel, caused by too much power on an adjacent channel in the spectrum. and 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. interfering devices. Unlike the ACIAdjacent Channel Interference. ACI refers to interference or interruptions detected on a broadcasting channel, caused by too much power on an adjacent channel in the spectrum. shown in the show ap spectrum interference-power output, the ACIAdjacent Channel Interference. ACI refers to interference or interruptions detected on a broadcasting channel, caused by too much power on an adjacent channel in the spectrum. shown in this graph indicates the percentage of channel time that is occupied by ACIAdjacent Channel Interference. ACI refers to interference or interruptions detected on a broadcasting channel, caused by too much power on an adjacent channel in the spectrum. or unavailable for 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. communication due to ACIAdjacent Channel Interference. ACI refers to interference or interruptions detected on a broadcasting channel, caused by too much power on an adjacent channel in the spectrum..

The Channel Metrics table can also show channel availability, the percentage of each channel that is available for use, or display the current relative quality of selected channels in the 2.4 GHzGigahertz. or 5 GHzGigahertz. radio bandsBand refers to a specified range of frequencies of electromagnetic radiation.. In the spectrum analysis feature, channel quality is a relative measure that indicates the ability of the channel to support reliable 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. communication. Channel quality, which is represented as a percentage in this chart, is a weighted metric derived from key parameters that can affect the communication quality of a wireless channel, including noise, 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) utilization and duty-cycles, and certain types of retries. Note that channel quality is not directly related to 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. channel utilization, as a higher quality channel may or may not be highly utilized.

 

A hybrid AP on a 20 MHz channel will see 40 MHz Wi-Fi data as non-Wi-Fi data.

Examples

The output of this example shows part of the channel metrics table for channels seen by the spectrum monitor ap123.

(host) [mynode] #show ap spectrum channel-metrics ap-name ap123 freq-band 2.4ghz

 

Channel Metrics Table

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

Channel Quality(%) Availability(%) Utilization(%) WiFi Util(%) Interference Util(%)

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

1 97 57 43 40 3

2 80 58 42 22 20

3 63 58 42 5 37

4 71 57 43 16 27

5 88 54 46 36 10

6 98 51 49 47 2

7 88 54 46 35 11

8 69 56 44 14 30

9 60 57 43 3 40

10 30 29 71 1 70

11 0 0 100 0 100

12 25 50 50 0 50

13 50 99 1 0 1

14 99 99 1 0 1

1+/5- 63 54 46 36 10

2+/6- 63 51 49 47 2

3+/7- 63 51 49 47 2

4+/8- 69 51 49 47 2

5+/9- 60 51 49 47 2

6+/10- 30 29 71 1 70

7+/11- 0 0 100 0 100

The output of this command includes the following information:

Column

Description

channel

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. or 82.11g radio channel.

Quality(%)

Current relative quality of selected channels in the 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. or 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 bandsBand refers to a specified range of frequencies of electromagnetic radiation., as determined by the percentage of packet retries, the current noise floor, and the duty cycle for 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 on that channel.

Availability(%)

The percentage of the channel currently available for use.

Utilization(%)

The percentage of the channel being used.

WiFi Util(%)

The percentage of the channel currently being used by 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.

Interference Util(%)

The percentage of the channel currently being used by 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. interference + 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. ACIAdjacent Channel Interference. ACI refers to interference or interruptions detected on a broadcasting channel, caused by too much power on an adjacent channel in the spectrum. (Adjacent Channel Interference)

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-profile mode spectrum-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-profile mode spectrum-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.

/*]]>*/