If public IP address associated with the ExpressRoute gateway becomes unavailable will it impact the ExpressRoute circuit traffic

Question

If public IP address associated with the ExpressRoute gateway becomes unavailable, will it impact only internal mgmt traffic or will it also affect the the ExrpessRoute circuit traffic.

Answer 1

@Paskauskas,G,Giedrius,JSHD1 R ,

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

I understand that you would like to know the impact of ExpressRoute gateway IP unavailability.

Technically, it should never be the case where a Public IP becomes unavailable in Azure.

• It is possible if the IP is Regional/Zonal and there is a corresponding regional/zonal failure, then the IP may become unavailable.
• But this also means, the associated resource (which will also be using the same region/zone) will also become unavailable.
• So, this means, IP Address alone becoming unavailable while the IaaS or PaaS service associated with it is available is not possible.

In your case, you will not encounter a scenario where the Gateway is healthy and available, but the IP associated with the gateway is unavailable - so the question is not correct.

Hope this clarifies.

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

Thanks,

Kapil

---

Please don’t forget to close the thread by clicking "Accept the answer" wherever the information provided helps you, as this can be beneficial to other community members.