IP multicast is a relatively new network technology, similar in function to broadcast, except that the end systems can be anywhere on the network. Before data is transferred, end systems join a multicast group. Data sent to the multicast address corresponding to the group is received by all members of the multicast group. A multicast address identifies a multicast group. Valid multicast addresses that you can use for DTS fall in the range 224.0.1.0 to 238.255.255.255 (Global Scope Addresses).
Note: The legacy hardware (for example, routers) may not support multicast.
DTS uses dynamic multicast groups that are removed after the transfer completes and are no longer required. Certain companies or products may already be officially registered to use multicast addresses near the bottom of the range; therefore, it is best to pick multicast addresses near the top of the range.
Important! DTS supports IPv4 broadcast and IPv4/IPv6 multicast addressing. The BCAST point-to-many protocol is only for use with IPv4 addresses. If you want to perform a broadcast-type transfer over an IPv6 network, use the MCAST protocol with the relevant IPv6 multicast address.
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