on prem connection/routing for on-prem and vmc on aws

[rastickland]

we are looking at joining our existing infrastructure with vcdr and vmc on aws.  the question that has my org stumped is the routing for the vpn / connection and it goes like this: 

if we expose a subnet to the vpn and vmc on aws, lets say 192.168.10.0/24 and have 6 vm's on that subnet, can 3 be powered on and function on prem and can 3 vm's be powered on and functioning on vmc on AWS at the same time?   

a second way of asking this question is  does the can you split a subnet,  lets say 192.168.10.0/24,  where half the subnet can live in AWS and the other half live on prem, as well as the gateway for the subnet, live on prem, without extending the on prem network into AWS?

[Harini Janardhan]

Hi,

Yes, you can achieve this by deploying HCX on your on-prem.

Once you have deployed HCX, you can your HCX NEtwork extension to extend your on-prem network to Cloud. Please find the below document:

HCX Installation: https://docs.vmware.com/en/VMware-HCX/4.7/hcx-user-guide/GUID-A631101E-8564-4173-8442-1D294B731CEB.html

HCX Network Extension: https://docs.vmware.com/en/VMware-HCX/4.7/hcx-user-guide/GUID-4052AC3F-9FFC-4FA2-ACB4-18B21962F4D3.html

[Bogdan_Ionut]

While you can't directly split a single subnet across on-premises and VMC on AWS, you can allocate separate non-overlapping subnets for each environment and establish connectivity between them using VPNs or other networking technologies. This allows VMs on each side to function independently within their respective subnets while enabling communication between them via established network connections.