Teams UCA assessment - ICMP being blocked

[Viam]

Has anyone else been hit over the last couple of days with a sudden 100% packet loss on assessments running to the Teams anycast address?

We are seeing traffic go out and reach Microsoft and then get dropped in the Microsoft network and so our assessments are not providing the data we would expect.

Just keen to understand if anyone else has managed to work around it yet?

ICMP seems to get dropped on or after hop: 

ae22-0.db3-96c-3a.ntwk.msn.net

104.44.238.38

Microsoft

Thanks,

Viam

[AndyT]

We're seeing the same results, started happening around 2:30pm yesterday. We're yet to find a solution.

[Martin_Smith]

Hi,

Thanks (both) for posts. Noty sure at this point, if this is a 'global' change, or perhaps something that is affecting the UK/W.Europe Anycast resolved address. If it was global, I feel sure we'd see a lot more reports....!

@AndyT - please log a support ticket via the UCA Help/Support portal, so we can track these in quantity and region.

I have also raised this a little earlier in parallel and directly with Product Management. 

[Martin_Smith]

Quick update..

IR Product Management confirm this appears to be a 'global' issue affecting UCA to the Teams Anycast address. IR is in contact with MSFT to find out what has changed to caused this issue. In the meantmie, if you are using UCA for Teams testing via Anycast and have been affect by this problem, please DO log a Support ticket via the UCA Help/Support portal, so that the Support staff can keep you up to date with our findings/resolution.

[GeraldC1]

To log a Support ticket for UCA: