@startuml

package server1 {
	[vserver1]
	[vserver2]
}
package server2 {
	[vserver3]
	[vserver4]
}
package server3 {
	[vserver5]
	[vserver6]
}
package server4 {
	[vserver7]
	[vserver8]
}
[vserver1] --> [vserver3]
[vserver3] --> [vserver8]
[vserver1] --> [vserver7]
[vserver4] --> [vserver2]
[vserver5] --> [vserver6]
[vserver6] --> [vserver8]
@enduml