Communications between network devices on a logical subnet are restricted between devices authorized to communicate with each other, even though other network devices may be present on the subnet. When a network device receives a request to provide it L2 address to a requesting network device, it responds...http://www.google.fr/patents/US6754716?utm_source=gb-gplus-shareBrevet US6754716 - Restricting communication between network devices on a common network
Restricting communication between network devices on a common network
