C-130 Troubleshooting

The table below lists some of the troubleshooting guidelines for the access point (AP).
Problem Solution
The AP did not receive a valid IP address via the DHCP. Ensure that the DHCP server is on and available on the VLAN/subnet to which the AP is connected. If the AP still fails to get a valid IP address, you can reboot it to see if the problem is resolved.
Unable to connect to the server.
  • Ensure that the server is running and is reachable from the network to which the AP is connected. If a firewall or a router has Access Control Lists (ACLs) enabled between the AP and the server, ensure that traffic on UDP port 3851 is allowed.
  • Use the IP-based server discovery method and ensure that you have correctly entered the DNS name, wifi-security-server , on the DNS server.
  • Ensure that the DNS server IP addresses are either correctly configured, or are provided by the DHCP server.
  • The AP might fail to authenticate with the server. In this case, an 'Authentication failed ' event is raised on the server. Refer to the event for recommended action.
The AP has encountered a problem.
  • If you are using Arista Cloud Services, then open the TCP port 443 (SSL). If you have an on-premises installation, then open UDP port 3851 and port 80.
  • If you are using a Proxy, Web Accelerator, or URL Content Filter between the AP and the Internet, ensure that the settings allow communication between the AP and Arista Cloud Services.
  • If your configuration requires you to specify an exact IP address or IP range for Arista Cloud Services, please contact This email address is being protected from spambots. You need JavaScript enabled to view it..