is Azure East Asia Datecenter Network from China rerouted?

恒睿朱 30

After the route before the network incident last month, the route to East Asia Datacenter was changed from Local ISP - East asia to Local ISP - Southeast Asia - East Asia. This would cause high latency to the server, i wonder if it's azure's issue or something else. User's image

GitaraniSharma-MSFT 47,086 Reputation points Microsoft Employee

2023-02-03T11:06:05.2266667+00:00

Hello @恒睿朱 ,

Welcome to Microsoft Q&A Platform. Thank you for reaching out & hope you are doing well.

Looking at the screenshot you've shared, I see that from hop 3 to 8, it is all ISP "China telecom" and at hop 9, it finally enters Microsoft DC Singapore and then at hop 11, it goes to Microsoft DC Hong Kong. But this is because the ISP routed via Singapore. I would advise you to check with the ISP to find out why it is routing the requests from Shanghai to Hong Kong via Singapore.

Regards,

Gita
恒睿朱 30 Reputation points

2023-02-03T13:42:50.2466667+00:00

@GitaraniSharma-MSFT Thanks for you answer, but the route went throught china telecom - azure east asia before the incident, but it changed to this one after the incident, is it a coincidence?
GitaraniSharma-MSFT 47,086 Reputation points Microsoft Employee

2023-02-06T12:18:17.27+00:00

@恒睿朱 , My suggestion is to check with your ISP China Telecom to understand why this routing changed all of a sudden as Azure China is operated by 21Vianet and not Microsoft.

If you still need further assistance, I would request you to contact the Azure China support team via the available support channels listed in the below doc:

https://learn.microsoft.com/en-us/azure/china/concepts-support
恒睿朱 30 Reputation points

2023-02-06T13:29:24.62+00:00

@GitaraniSharma-MSFT I'm not using azure China, it's the global azure, east asia area
GitaraniSharma-MSFT 47,086 Reputation points Microsoft Employee

2023-02-07T14:24:55.18+00:00

@恒睿朱 , thank you for the update.

Let me check this internally and get back to you with an update.
GitaraniSharma-MSFT 47,086 Reputation points Microsoft Employee

2023-02-08T06:50:26.9233333+00:00

@恒睿朱 , I understand that the IP address "20.239.184.162" that you are trying to access is in Azure Public East Asia region. But may I know from where you are trying to access this IP? Are you accessing it from China?
恒睿朱 30 Reputation points

2023-02-08T07:40:30.4433333+00:00

@GitaraniSharma-MSFT Yes, from China. ISP is China Telecom.
GitaraniSharma-MSFT 47,086 Reputation points Microsoft Employee

2023-02-17T16:02:49.51+00:00

@恒睿朱 , apologies for the delay in response. I've forwarded the query to Azure Product Group team, and they have forwarded to it to another team for an update but I'm yet to receive a response. As soon as I have a response, will update the same here. Thank you for your understanding and patience.
恒睿朱 30 Reputation points

2023-02-21T11:27:43.2133333+00:00

@GitaraniSharma-MSFT It's OK, but it will be good if you do it as fast as possible
GitaraniSharma-MSFT 47,086 Reputation points Microsoft Employee

2023-02-23T15:23:22.79+00:00

@恒睿朱 , The Product Group team just confirmed that the trace provided by is correct and this is the path Azure takes. This change was done to optimize traffic from China provider and has nothing to do with last month's network incident/global outage. This is expected.

Accepted answer

GitaraniSharma-MSFT 47,086 Reputation points Microsoft Employee

2023-02-24T12:08:08.4433333+00:00

Hello @恒睿朱 ,

Apologies for the delay in response.

I understand that you are accessing an Azure Public IP which is deployed in East Asia region over Internet from China and wanted to know if there is a change in routing from Azure end as after the network incident last month, the route to East Asia Datacenter was changed from China Local ISP - East Asia to China Local ISP - Southeast Asia - East Asia.

I reached out to the Azure Product Group team and below is the update I received:

The trace provided by you is correct and this is the path Azure takes now. As part of a project to meet compliance and security requirements, Azure has shifted China telecom peering from Hong Kong to Singapore starting from Feb 1st. This change was done to optimize traffic from China provider and has nothing to do with last month's network incident/global outage. This is expected.

Kindly let us know if the above helps or you need further assistance on this issue.

Please "Accept the answer" if the information helped you. This will help us and others in the community as well.
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is Azure East Asia Datecenter Network from China rerouted?

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