microsoft/SDN

VM traffic being sent over PA network

DCoates-InnovateLtd opened this issue · 2 comments

DCoates-InnovateLtd commented

Good morning,

Please can someone help me? I have deployed Azure HCI and used the SDN Express powershell to deploy the SDN. this ran though successfully with no errors. I have connected a device to the MUX and GWs using BGP and i can see advertised routes. when i have built a VNET in WAC and a subnet built a basic VM and attached to the subnet if i ping 8.8.8.8 for example i can see the traffic running accross the PA network but with out the VMs Public IP address. it shows up as the VMs private IP. Am i supposed to provide NAT in addition to the SDN Express deployment? or should i expect that the PA network would only pass public ipaddresses?

Thanks for the help. i have attached the config file.
SDNDeploymentv1.1.txt

The-TeQnician commented

Hi,

For a tenant to have internet access you need to configure an load balancer with outbound nat on a public IP and add the VM Nics to the backend pool. This is not done by the SDN Express script.
Then it will probably work.

Regards,
Pascal

AnirbanPaul commented

Pascal is right. You have two options:

  1. Attach a public IP address directly to a VM. You can do so by going to the VM Network Properties in Windows Admin Center and assign a public IP address there.
  2. Configure a load balancer. In the load balancer, create an outbound NAT rule. Ensure that you add the VM NIC in the backend pool of the load balancer. More details here: https://learn.microsoft.com/en-us/azure-stack/hci/manage/load-balancers