UPnP (Universal Plug and Play) supports
null-setting for networking, can
automatically find a variety of networked
devices. When UPnP is enabled, UPnP-
enabled devices are allowed to
dynamically access the network, obtain IP
addresses, and transmit performance
information. If you have DHCP and DNS
servers on your network, you can
automatically obtain DHCP and DNS
services. UPnP-enabled devices can be
automatically disconnected from the
network without affecting the device or
other devices on the network.
Multicast has the function of sending the
same data to multiple devices. An IP host
uses the IGMP (Internet Group
Management Protocol ) to report
multicast group memberships to send data
to neighboring routers, and the multicast
router uses IGMP to discover which hosts
belong to the same multicast group.
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