|Description||string||DeviceConnectivityCollection describes connectivity WITHIN a single system. The system forwards packets among the members of the collection. For example, this class is used to represent connectivity within a router or switch. There may be multiple DeviceConnectivityCollection instances for a system, when multiple forwarding domains exist. For example, an Ethernet switch may separate its LANEndpoints into two groups, each associated with a different virtual LAN. The LANEndpoints for each group would be segregated into separate DeviceConnectivity Collections.