
Meraki Authentication can be used as an alternative to RADIUS Authentication for testing as the basic functionalities are similar. This also prevents disturbing the entire network when only one AP is in question. These settings will remove all the third parties involved and make it easier to diagnose the issue between the client and the access point. If you want to contain your test, go to Wireless > SSID Availability and t ag the SSID with the AP's tag so that only the AP in question broadcasts it.

More information for the RADIUS troubleshooting can be found in the RADIUS Issue Resolution Guide.įailed connections can be checked by navigating to Wireless > Wireless Health > Connections and then clicking on the failed connection.

When using RADIUS or AD authentication it is a good troubleshooting step to re-verify the credentials for AD, and the RADIUS server credentials as well. Sometimes when a pre-shared key for an SSID is recently changed on the dashboard using Google Chrome, the old value may be cached and the key is never actually changed. It's important to verify that any changes to the pre-shared key are actually applied and saved. It is a good practice to change such a setting in a private browser and re-verifying that the changes were saved properly. When a client is unable to connect to a specific SSID, incorrect credentials (username or password) are the most common issue. This issue can often be ruled out by simply deleting the SSID from the device, trying to connect again and then re-typing the pre-shared key. More information on DHCP flows on Netmania. If we do not see DHCP Offers coming from the DHCP server or no Acknowledgment packets to the AP's wired interface, then there is likely an upstream or DHCP server issue. Once you have downloaded a packet capture file, open it in Wireshark and use the filter “dhcp” to show DHCP packets. Multiple captures and attempts are important to ensure you have a useful amount of data. This is helpful for determining whether DHCP Offers or Requests are passing through the access point. Run a packet capture on the AP’s wired interface and initiate the connection from an affected client multiple times.Reduce the DHCP lease duration, if it is feasible to do so. Doing so may help clients experiencing DHCP addressing issues by freeing up more space in the addressing pool held by inactive devices.Create a test SSID in NAT mode and try to connect again with a client that is experiencing issues. This will help determine whether there are issues with local DHCP servers.The following steps can help to narrow down the scope of the issue: This is often caused because of a sudden increase in the number of clients using the network, so it's usually best to check for that first. An exhausted DHCP pool is the most common reason responsible for DHCP issues.
