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Wireless troubleshooting using MR Live tools

Live tools on the Monitor > Access Points page can provide important information and assist with troubleshooting . To use Live Tools, select the access point of interest from the Monitor > Access points page. This article is an overview of the available services associated with this feature.

 

  • Current clients

  • Channel utilization

  • Ping

  • ARP table

  • Traceroute

  • Throughput

  • Blink LEDs

  • Reboot APs

 

Current clients

The Current clients tool loads automatically by default and shows the number of clients connected, data usage for the AP in total and per user, as well as how well and how long the user has been associated. You may also ping each currently connected client.

Channel utilization

Shows real time channel utilization for the AP’s channels that are in use.

802.11 traffic comes from any device within range that is scanning for an SSID to connect to or passing traffic over the AP. Non-802.11 interference is caused by environmental factors such as building materials, high voltage equipment/wiring and microwaves.  This Cisco article discusses what can cause both types of wireless interference and goes into detail about what can cause interference. Learn how to troubleshoot interference issues in the following articles:

 

Meraki for Events and high density deployments

Tools for Troubleshooting Poor Wireless Performance

Common Source of Wireless Interference

Live Channel Utilization

Ping

Run a Ping test to any client that is connected wirelessly to them. This is an ARPing and instead of using the standard ICMP protocol, the device uses the ARP protocol. This allows us to reach out to a device even if there is an IP problem. 

By default there is a ping running from the cloud controller to the AP and then you can run additional pings to clients via MAC address or client name.

ARP table

The ARP table live tool and be used to view the AP's ARP table. This will display a list of IP addresses and which MAC addresses are currently using them.

Traceroute

Run a traceroute from the AP to any host upstream.  This lets you know the route information from the AP to the specific host.  Learn more about using traceroute here .

Throughput

This tool allows a throughput test to be performed between the AP and Dashboard.  For more information, review the article on the Throughput live tool

Note: This is not meant as a tool to test the overall throughput available from an AP to the Internet.

Blink LEDs

This tool is useful for finding the AP. Also, if you are running in Dark Mode where the LEDs are not on, this tool will blink the LEDs so that you can see if the device is functioning or not. This tool flashes all the LEDs on the device in unison.

Reboot AP

If the AP is checking into the cloud and you would like to perform a reboot without unplugging the device you can run this command from the dashboard.

 

These tools will only work with APs that are online and communicating with the Dashboard. If you are trying to use one of these tools and they are taking a long time to load, this can be due to a few reasons:

 

  1. If the AP is currently working at capacity due to large number of clients or data passing through the device, these tools will take time to load because the AP’s resources are taxed

  2. If the AP is having problems connecting to the cloud controller, these tools will either not load or load slowly. Learn more about troubleshooting this here .

  3. If there is a problem on your local lan that is impeding traffic or your connection is slow, this can cause long load times as well.

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Last modified
15:14, 18 Feb 2016

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ID: 2080

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