--- title: Customer Infrastructure Alerts slug: customer-infrastructure-alerts docTags: createdAt: 2024-07-23T19:47:31.339Z --- # Introduction Alerts for customer owned infrastructure raise awareness about the following: 1. Radius Server Availability & experience 2. DNS Server Availability & experience 3. DHCP Server Availability & experience 4. Internet availability and experience Below is the list of alerts raised in the Nile Portal for customer owned infrastructure. *** ## RADIUS Server Availability - Site Level This alert is generated when a RADIUS server serving a specific customer site is unavailable. | Example Alert | *RADIUS server with IP address 1.2.3.4 is unreachable from site Bangalore for 1 minute.* | | --------------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | Recommended Customer Action | • Use Run Test in the Nile Portal device details page to test whether Radius server is reachable from the device subnets.
• Check for any firewall rules blocking radius server access from the device subnets | *** ## RADIUS Server Availability - Customer Level This alert is generated when a RADIUS server serving ALL sites of a customer is unavailable. | Example Alert | Radius server with IP address 10.129.1.165 is unreachable for 3 minutes. All sites utilizing Radius server are impacted. | | --------------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ | | Recommended Customer Action | • Verify that the RADIUS server at the indicated address is up and running, and no cable is unplugged or damaged.
• Use Run Test in the Nile Portal device details page to test whether Radius server is reachable from the device subnets.
• Check for any firewall rules blocking radius server access from the device subnets | *** ## RADIUS Server certificate expiry This alert is generated when the certificate in RADIUS server is about to expire. | Example Alert | *RADIUS certificate for server 1.2.3.4 expiring in 20 days on 01:13:24. Please update the RADIUS server certificate before it expires to avoid failed authentication for end user devices.* | | --------------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | Recommended Customer Action | • Update the RADIUS server certificate before it expires. | *** ## Internet Availability This alert is generated when Nile Service Block is unable to reach Nile Cloud Services. | Example Alert | *Nile Service Block has lost power or internet and is not reachable from the Nile cloud at site Bangalore for 20 minutes.* | | --------------------------- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | Recommended Customer Action | • Check the power at the Nile equipment
• Verify the cables are plugged into the upstream router, and that the cables are undamaged.
• Check the site's internet connectivity. | *** ## DNS Availability - Site Level This alert is generated when a DNS server is unavailable from a site. | Example Alert | *DNS server with IP address 1.2.3.4 is unreachable from site Bangalore for 5 minutes.* | | --------------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | Recommended Customer Action | • Use run test in the Nile Portal device details page to test whether DNS server is reachable from the device subnets.
• Check for any firewall rules blocking DNS server access from the device subnets | *** ## DNS Availability - Customer Level This alert is generated when a DNS server is unavailable from ALL sites of a customer. | Example Alert | *DNS server with IP address 1.2.3.4 is unreachable for 10 minutes. All sites utilizing DNS server are impacted.* | | --------------------------- | ---------------------------------------------------------------------------------------------------------------- | | Recommended Customer Action | • Check for any firewall rules blocking DNS server access from the device subnets | *** ## DHCP Availability - Site Level This alert is generated when a DHCP server is unavailable from a site. | Example Alert | *DHCP service with IP address 1.2.3.4 is unreachable from site Bangalore for 10 hours.* | | --------------------------- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | Recommended Customer Action | • Use run test in Nile Portal device details page to test whether DHCP server is reachable from the device subnets.
• Check for any firewall rules blocking DHCP server access from the device subnets | *** ## DHCP Availability - Customer Level This alert is generated when a DHCP server is unavailable from ALL sites of a customer. | Example Alert | DHCP server with IP address 10.129.1.165 is unreachable for 3 minutes. All sites utilizing DHCP server are impacted. | | --------------------------- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | Recommended Customer Action | • Use run test in Nile Portal device details page to test whether DHCP server is reachable from the device subnets.
• Check for any firewall rules blocking DHCP server access from the device subnets | *** ## AQI Violation AQI measures the "quality" of the WiFi medium as detected by the Nile sensors. An alert is generated when the AQI falls below the expected threshold. ***Note****: If overall channel utilization is high due to low Wi-Fi AQI, the Access Point (AP) will automatically switch to a better channel.* - If the air quality deteriorates due to channel load, the most likely root cause is Wifi interference from external access points. | Example Alert | Poor WiFi Air Quality detected due to WiFi interference from external access points at Bangalore/Bldg\_1/Floor\_1 for 10 minutes. | | --------------------------- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | Recommended Customer Action | • Please check the area for any external access points or devices that could be causing WiFi interference, such as nearby routers.
*Note: AQI is only applicable to the 5GHz radio band.* | - If the air quality deteriorates due to noise-floor, the most likely root cause is external non-wifi source of interference.  | Example Alert | Poor WiFi Air Quality detected due to interference from external non-WiFi source at Bangalore/Bldg\_1/Floor\_1 for 8 minutes. | | --------------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | Recommended Customer Action | • Please check the area for any non-WiFi devices that may be causing interference, such as cordless phones, non-Wi-Fi compliant wireless security cameras, or other types of wireless equipment that generate continuous signals within the Wi-Fi frequency bands. | ***