Azure Looking Glass

I have gotten pretty close to figuring out my issue with the Azure Cloud. When I advertise my routes through one specific upstream provider, I have an issue. If I pull my routes from them, all works well.

I believe this is some type of MTU issue. Could be filtering, but I doubt it.

Is there an Azure Looking glass that I can use to originate pings and traceroutes? My googlefu is weak and I haven’t found it yet.

With that information, I think I can help my upstream provider know where the problem lies.

John Acock

I think we found the issue. Looks like a pmtu issue with our upstream provider and their connection to the microsoft fabric. Working with them now.

Thank you everyone for helping. Some reached me off list to help.