Figure 3 only shows a single E-LAN service and only the tree from one of the members, however very large numbers of E-LAN services with membership from 2 to every node in the network can be supported by advertising the membership, computing the tandem behaviors, manufacturing the known multicast addresses and populating the FIBs.
42.
The multicast address is 224.0 . 1.2, making this only the third multicast application ( and the first game ) to receive an address assignment, with only the VMTP protocol ( 224.0 . 1.0 ) and the Network Time Protocol ( 224.0 . 1.1 ) having arrived earlier.
43.
SPBV builds shortest path trees that support Loop Prevention and optionally support loop mitigation on the SPVID . SPBV still allows learning of Ethernet MAC addresses but it can distribute multicast address that can be used to prune the shortest path trees according to the multicast membership either through Multiple MAC Registration Protocol ( MMRP ) or directly using IS-IS distribution of multicast membership.
44.
For IPv6 multicast addresses, the Ethernet MAC is derived by the four low-order octets OR'ed with the MAC 33 : 33 : 00 : 00 : 00 : 00, so for example the IPv6 address FF02 : DEAD : BEEF : : 1 : 3 would map to the Ethernet MAC address 33 : 33 : 00 : 01 : 00 : 03.
45.
Live feeds are sent in the ContentDepot system as streaming MP2 audio, sent over the same satellite transponder, but as an IP multicast stream ( as opposed to a file transfer for pre-recorded programs ) which is decoded by a special streaming audio receiver ( called a stream decoder ) set to the IP multicast addresses assigned for live audio streams on the satellite transponder used by ContentDepot.
46.
However, to prevent any intervening Ethernet switches from flooding the multicast frames out of all switch ports, which turns the traffic profile into something more like broadcast, intermediate switches should implement MLD snooping, which would allow them to send traffic that is addressed to a solicited-node multicast address ( or any other multicast address ) to be sent out only on the ports that lead to stations that have subscribed to receive that traffic.
47.
However, to prevent any intervening Ethernet switches from flooding the multicast frames out of all switch ports, which turns the traffic profile into something more like broadcast, intermediate switches should implement MLD snooping, which would allow them to send traffic that is addressed to a solicited-node multicast address ( or any other multicast address ) to be sent out only on the ports that lead to stations that have subscribed to receive that traffic.
