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Copy file name to clipboardExpand all lines: src/content/docs/magic-transit/network-health/index.mdx
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import { DirectoryListing } from"~/components"
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Magic Transit uses health checks probes to determine the status of tunnels. This information is used to steer traffic through the best available route, and to warn you about potential issues with a tunnel. Service-level indicators (SLI) and service-level objectives (SLOs) combine to determine when Cloudflare sends you tunnel health alerts. Refer to [Magic Tunnel health check calculation](/magic-transit/reference/how-cloudflare-calculates-magic-tunnel-health-alerts/) for more information about SLI and SLOs.
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Magic Transit uses health checks probes to determine the status of tunnels. This information is used to steer traffic through the best available route, and to warn you about potential issues with a tunnel. Service-level indicators (SLI) and service-level objectives (SLOs) combine to determine when Cloudflare sends you tunnel health alerts. Refer to [How Cloudflare calculates Magic Tunnel health alerts](/magic-transit/reference/how-cloudflare-calculates-magic-tunnel-health-alerts/) for more information about SLI and SLOs.
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There are two types of health checks available: endpoint and tunnel health checks.
Copy file name to clipboardExpand all lines: src/content/docs/magic-wan/configuration/common-settings/sites.mdx
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8. In **Define alert settings** you set up alerts to notify you when there are issues with your site's on-ramps. If you want to set up alerts later, select **Skip this for now** to complete your setup. Otherwise, continue reading.
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9. In **Magic WAN Health Check Alert** > **Notification name**, enter a name for the site's alert.
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9. Under **Alert settings**, choose how you want to be notified when there is an issue. You can add webhooks as well as email addresses.
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10. In **Alert sensitivity level** define the threshold for Magic Tunnel health alerts to be fired. Refer to [Magic Tunnel health check calculation](/magic-wan/reference/how-cloudflare-calculates-magic-tunnel-health-alerts/) for more information.
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10. In **Alert sensitivity level** define the threshold for Magic Tunnel health alerts to be fired. Refer to [How Cloudflare calculates Magic Tunnel health alerts](/magic-wan/reference/how-cloudflare-calculates-magic-tunnel-health-alerts/) for more information.
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11. Select **Complete setup** to finish setting up your site.
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Your site is now set up. If you have other sites you need to set up, repeat the steps above. If you did not set up alerts, we strongly recommend that you do it. Otherwise you will not be notified when there is a problem with one of your on-ramps.
Copy file name to clipboardExpand all lines: src/content/partials/networking-services/tunnel-health/magic-tunnel-health-alerts.mdx
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The time it takes to be alerted depends on the sensitivity level you configure for your SLO thresholds. Higher sensitivity levels will notify you faster when a tunnel's health degrades, but they may also trigger alerts for brief or minor disruptions. Lower sensitivity levels reduce the chance of false alarms but may delay notifications for less severe issues. While the underlying detection timing remains consistent across sensitivity levels, the speed of notification depends on how significantly the tunnel's health has dropped and the sensitivity you have chosen. Cloudflare recommends that you [test SLO thresholds](#test-slos) to decide which one better serves your use case.
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Refer to <ahref={props.magicTunnelHealthCheckCalculation}>Magic Tunnel health check calculation</a> for more information on this topic.
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Refer to <ahref={props.magicTunnelHealthCheckCalculation}>How Cloudflare calculates Magic Tunnel health alerts</a> for more information on this topic.
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## Set up Magic Tunnel health alerts
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5. Select **Alert by tunnel**.
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6. Enter a name and description for the notification.
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7. Add webhooks or an email address for the person who should receive the notification, and select **Next**.
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8. Select the **Alert Sensitivity Level** threshold from the dropdown menu. The threshold is predefined to _Medium (98.0)_. There are options available between _Minimum (95.0)_ and _Maximum (99.9)_. Refer to <ahref={props.magicTunnelHealthCheckCalculation}>Magic Tunnel health check calculation</a> for more information on this topic.
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8. Select the **Alert Sensitivity Level** threshold from the dropdown menu. The threshold is predefined to _Medium (98.0)_. There are options available between _Minimum (95.0)_ and _Maximum (99.9)_. Refer to <ahref={props.magicTunnelHealthCheckCalculation}>How Cloudflare calculates Magic Tunnel health alerts</a> for more information on this topic.
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9. From the **Alert interval** drop-down menu, set the minimum amount of time that must pass before a duplicate alert is sent to you. Options range from five minutes to seven days.
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10. Enable **Set as default alert for any new tunnels created in the future** if you want the alert sensitivity level you chose to be automatically applied to all new tunnels you create.
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11. Select **Next**.
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5. Select **Alert by data center**.
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6. Enter a name and description for the notification.
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7. Add webhooks or an email address for the person who should receive the notification, and select **Next**.
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8. Select the **Alert Sensitivity Level** threshold from the dropdown menu. The threshold is predefined to _Medium (98.0)_. There are options available between _Minimum (95.0)_ and _Maximum (99.9)_. Refer to <ahref={props.magicTunnelHealthCheckCalculation}>Magic Tunnel health check calculation</a> for more information on this topic.
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8. Select the **Alert Sensitivity Level** threshold from the dropdown menu. The threshold is predefined to _Medium (98.0)_. There are options available between _Minimum (95.0)_ and _Maximum (99.9)_. Refer to <ahref={props.magicTunnelHealthCheckCalculation}>How Cloudflare calculates Magic Tunnel health alerts</a> for more information on this topic.
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9. From the **Alert interval** drop-down menu, set the minimum amount of time that must pass before a duplicate alert is sent to you. Options range from five minutes to seven days.
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10. Choose the data centers you want to receive alerts for, and select **Next**.
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11. Choose the tunnels you want to receive alerts for. You can search by specific tunnel names, or filter them by type (GRE, IPsec and CNI). Select **Next**.
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