Hi,

For a case study, we have an existing Site-to-Site connectivity in place.  We now procured ExpressRoute Connection through an Exchange Provider. So we wanted to upgrade the exisitng connection with Express Route. 

I have gone through this link:https://azure.microsoft.com/en-in/documentation/articles/expressroute-configuring-exps/ 

Is the steps mentioned in the above link is enough or is there any specific steps to be followed to upgrade the connection?

Will there be network outage between on-prem and azure services during this change?

Any inputs will be helpful. Thanks.