How to view and configure alerts for Azure ExpressRoute circuit maintenance
ExpressRoute uses Azure Service Health to notify you of planned and upcoming ExpressRoute circuit maintenance. With Service Health, you can view planned and past maintenance in the Azure portal along with configuring alerts and notifications that best suits your needs. To learn more about Azure Service Health refer to What is Azure Service Health?
- During a maintenance activity or in case of unplanned events impacting one of the connection, Microsoft will prefer to use AS path prepending to drain traffic over to the healthy connection. You will need to ensure the traffic is able to route over the healthy path when path prepend is configured from Microsoft and required route advertisements are configured appropriately to avoid any service disruption.
- Terminating ExpressRoute BGP connections on stateful devices can cause issues with failover during planned or unplanned maintenances by Microsoft or your ExpressRoute Provider. You should test your set up to ensure your traffic will failover properly, and when possible, terminate BGP sessions on stateless devices.
- During maintenance between the Microsoft edge and core network, BGP availability will appear down even if the BGP session between the customer edge and Microsoft edge remains up. For information about maintenance between the Microsoft edge and core network, make sure to have your maintenance alerts turned on and configured correctly using the guidance below.
View planned maintenance
Sign in to the Azure portal.
Navigate to the Service Health page.
Select Planned maintenance under Active Events on the left side of the page. On this page, you can view individual maintenance events by filtering on a target subscription, Azure region, and Azure service.
Select ExpressRoute from the Services drop-down to only view ExpressRoute related maintenance. Then select an issue from the list to view the event summary. Select the Issues updates tab for more details about an on-going maintenance.
View past maintenance
To view past maintenance events, select Health history under the History section on the left side of the page.
On this page, you can review individual maintenance events by filtering on a target subscription and Azure Region. To further narrow the scope of health history events, you can select the health event type and define a past time range. To filer for planned ExpressRoute circuit maintenance, set the Health Event Type to Planned Maintenance.
Create alerts and notifications for maintenance events
Azure Service Health supports customized alerting for maintenance events. To configure an alert for ExpressRoute Circuit maintenance, navigate to Health alerts under the Alerts section on the left side of the page. Here you'll see a table of previously configured alerts.
To create a new alert, select Add service health alert at the top of the page.
Select or enter the following information to create an alert rule.
Category Settings Value Condition Subscription Select the target subscription. Service(s) ExpressRoute \ ExpressRoute Circuits Region(s) Select a region or leave as Global for health events for all regions. Event type Select Planned maintenance. Actions Action group name The Action Group determines the notification type and defines the audience that the notification is sent to. For assistance in creating and managing the Action Group, refer to Create and manage action groups in the Azure portal. Alert rule details Alert rule name Enter a name to identify your alert rule. Description Provide a description for what this alert rule does. Save alert rule to resource group Select a resource group to create this alert rule in. Enable alert rule upon create Check this box to enable this alert rule once created.
Select Create alert rule to save your configuration.