At least 1 BGP session is down - Express route

Question

At least 1 BGP session is down - Express route

Mustaq Syed 0

At least 1 BGP session is down (Unplanned) At Wednesday 7 May 2025 at 3:23:20 pm GMT+10, the Azure monitoring system received the following information regarding your ExpressRoute circuit: The platform has detected that at least 1 BGP session on at least

How do we reach out to MS to let know that we are currently facing Express route failed state.

We are currently have basic plan and we cannot raise a case with Microsoft. What would be alternative way to reach out and ask for assistance.

Sindhuja Dasari 780 Reputation points Microsoft External Staff Moderator

2025-05-08T09:57:01.1533333+00:00

Hello Mustaq Syed

Following up to see if the above information was helpful. And, if you have any further query do let us know.
Sindhuja Dasari 780 Reputation points Microsoft External Staff Moderator

2025-05-09T09:14:49.06+00:00

Hello Mustaq Syed

Following up to see if the above information was helpful. And, if you have any further query do let us know.

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Sindhuja Dasari 780 Reputation points Microsoft External Staff Moderator

2025-05-08T09:57:01.1533333+00:00

Hello Mustaq Syed

Following up to see if the above information was helpful. And, if you have any further query do let us know.
Sindhuja Dasari 780 Reputation points Microsoft External Staff Moderator

2025-05-09T09:14:49.06+00:00

Hello Mustaq Syed

Following up to see if the above information was helpful. And, if you have any further query do let us know.

Answer 1

Hello Mustaq Syed

I understand you're facing an issue with your ExpressRoute where at least one BGP session has gone down.

Please validate the below details:

Verification: Check the Azure Service Health dashboard.

Go to Azure Portal > Service Health > Planned Maintenance or Service Issues.

Filter by ExpressRoute and your subscription/region to confirm ongoing maintenance.

Alternatively, review notifications in your Azure account under Notifications or check the Azure Status Page for ExpressRoute updates.

https://learn.microsoft.com/en-us/azure/expressroute/planned-maintenance

https://learn.microsoft.com/en-us/azure/expressroute/maintenance-alerts#view-past-maintenance

Since your BGP session is down we request you to check the below details:

Verify the BGP Sessions ensure that both primary and secondary BGP sessions are established. Dual BGP sessions are required for compliance with the SLA
Enable Diagnostics, in the Azure Portal, navigate to your ExpressRoute circuit and select Diagnose and solve problems. Run diagnostics to identify any performance issues.
Check AS Path Prepend Configuration: Ensure your on-premises devices are configured to accept the AS path prepend (AS 12076) used by Microsoft during maintenance. This ensures traffic can reroute to the redundant path without issues.

Refer Reset-Failed-ExpressRoute-Circuit

Could you please provide more details so we can connect and assist in resolving the issue.

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At least 1 BGP session is down - Express route

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