Log in to ask questions, share your expertise, or stay connected to content you value. Don’t have a login? Learn how to become a member.
SSH/TCP Traffic Flow Fails Between Virtual Machines In Contrail, SSH/TCP traffic flow may fail in between virtual machines (VMs) hosted on different compute nodes because of checksum errors. SSH/TCP traffic may fail between the following compute nodes: VMs on different compute nodes Compute nodes and the MX Series router Use Case Example The following use case shows how SSH traffic may fail between different VM hosts: You have two host compute nodes: Compute: Host1 ( VM1, VM2 in network A) Compute: Host2 ( VM3, VM4 in network A) You observe the following traffic flow behavior between the four VMs: VM1 to VM2 - SSH traffic successful VM1 to VM3 - SSH traffic fails VM2 to VM4 - SSH traffic fails VM3 to VM4 - SSH traffic successful The SSH traffic flow from VM1 to VM2 and from VM3 to VM4 passes through successfully as the traffic is processed at the vRouter within the compute node, but the traffic won't pass through the physical NIC of the compute node because the VM pair is hosted on the same compute node