My (Windows) application relies on license keys linked to MAC addresses. Getting a license key assigned to a new MAC address is a hassle, I need to request the vendor to do this manually. I use ENI to retain the MAC address of the (on-demand) EC2 instance when it's stopped / terminated. Based on the [documentation](https://docs.aws.amazon.com/AWSEC2/latest/WindowsGuide/using-eni.html), I understand an ENI is linked to a specific subnet and hence cannot be moved across AZs. This limits my flexibility in moving instances across AZs, e.g. when encountering (last minute) capacity issues in a given AZ. Is there any way to migrate the MAC address across AZs?

[EC2 Windows] Move MAC address across AZs

My (Windows) application relies on license keys linked to MAC addresses. Getting a license key assigned to a new MAC address is a hassle, I need to request the vendor to do this manually. I use ENI to retain the MAC address of the (on-demand) EC2 instance when it's stopped / terminated. Based on the documentation, I understand an ENI is linked to a specific subnet and hence cannot be moved across AZs. This limits my flexibility in moving instances across AZs, e.g. when encountering (last minute) capacity issues in a given AZ.

Is there any way to migrate the MAC address across AZs?

주제

네트워킹 및 콘텐츠 전송 컴퓨팅

태그

아마존 VPC 아마존 EC2

언어

English

rePoster

질문됨 2년 전980회 조회

1개 답변

최신
최다 투표
가장 많은 댓글

There is no way to migrate MAC addresses between Availability Zones for the reason that you've listed: ENIs are tied to the AZ; MAC addresses are assigned to the ENI.

전문가

Brettski-AWS

답변함 2년 전

전문가

Giovanni Lauria

검토됨 한 달 전

[EC2 Windows] Move MAC address across AZs

관련 콘텐츠