Ensure Continued Operations for On-Premises and Azure VMs in ExpressRoute Communication
Question
A company hosts virtual machines (VMs) in an on-premises datacenter and in Azure. The on-premises and Azure-based VMs communicate using ExpressRoute.
The company wants to be able to continue regular operations if the ExpressRoute connection fails. Failover connections must use the Internet and must not require Multiprotocol Label Switching (MPLS) support.
You need to recommend a solution that provides continued operations.
What should you recommend?
Answers
Explanations
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A. B. C. D.D
https://docs.microsoft.com/en-us/azure/architecture/reference-architectures/hybrid-networking/expressroute-vpn-failoverThe requirement is to ensure continued operations even if the ExpressRoute connection fails. ExpressRoute is a dedicated private connection between on-premises infrastructure and Azure, which provides a secure and reliable communication channel. However, if the ExpressRoute connection fails, a backup solution is required that does not require MPLS support.
Option A: Set up a second ExpressRoute connection This option adds redundancy to the existing ExpressRoute connection. A second ExpressRoute connection can provide failover in case the primary connection fails. However, this option requires a dedicated physical connection and additional costs for bandwidth and maintenance.
Option B: Increase the bandwidth of the existing ExpressRoute connection This option can improve the performance of the existing ExpressRoute connection, but it does not provide failover capabilities in case of a connection failure.
Option C: Increase the bandwidth for the on-premises internet connection This option can improve the bandwidth for the on-premises internet connection, but it does not provide failover capabilities in case of a connection failure.
Option D: Set up a VPN connection A VPN (Virtual Private Network) connection can provide a backup solution for ExpressRoute. A VPN connection can be set up using the public Internet, and it does not require MPLS support. In case the ExpressRoute connection fails, the VPN connection can be used as a backup to continue regular operations. This option provides redundancy without the need for a dedicated physical connection and additional costs.
Therefore, the recommended solution is option D: Set up a VPN connection.
