What is crucial for the proper functioning of VLAN ID in Huawei FusionCompute?

For VLAN ID to function properly within Huawei FusionCompute, it is essential that the VLAN ID exists on the physical switch. This is because VLAN IDs operate at Layer 2 of the OSI model, which involves networking devices such as switches managing traffic based on these identifiers.

When a VLAN ID is assigned to virtual machines within the FusionCompute environment, the traffic for these VMs needs to be tagged with the appropriate VLAN ID so that it can be correctly routed through the network. If the corresponding VLAN configuration is not present on the physical switch, it will lead to connectivity issues since the switch will not recognize the traffic belonging to that VLAN, thereby preventing virtual machines from communicating effectively with the rest of the network or other VLANs.

Understanding this concept emphasizes the necessity of alignment between virtual network configurations and physical switch capabilities in any cloud infrastructure setup.