• Click Apply Changes to save the changes to the topology. The changes will not take effect if you exit the edit mode before the changes are saved.

• To enable or disable a network node, migrate the routers on the node to another node first. Otherwise, the operation will fail.

• Virtual switches can be modified or deleted only after the associated VPC gateways or shared service gateways are removed.

• Connectivity tests support only the IPv4 and IPv6 protocols, and the source and destination objects must be in the same resource pool. To test the connectivity between objects in different resource pools, add the corresponding resource pools to a communication domain first.

• The port group and VLAN configuration of a virtual switch must be consistent with that of the physical switch. Otherwise, network isolation will not take effect.

• Ensure that the devices (including routers and NFV devices) in the topology have been created (or the corresponding device templates have been uploaded). Otherwise, the devices cannot be deployed properly.