HP 6125XLG R2306-HP 6125XLG Blade Switch IP Multicast Configuration Guide - Page 16
Multicast protocols
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Figure 7 IPv6-to-MAC address mapping IMPORTANT: Because of the duplicate mapping from multicast IP address to multicast MAC address, the device might inadvertently send multicast protocol packets as multicast data in Layer 2 forwarding. To avoid this, do not use the IP multicast addresses that are mapped to multicast MAC addresses 0100-5E00-00xx and 3333-0000-00xx (where "x" specifies any hexadecimal number from 0 to F). Multicast protocols Multicast protocols fall into the following categories: • Layer 3 and Layer 2 multicast protocols: { Layer 3 multicast refers to IP multicast working at the network layer. Layer 3 multicast protocols-IGMP, MLD, PIM, IPv6 PIM, MSDP, MBGP, and IPv6 MBGP. { Layer 2 multicast refers to IP multicast working at the data link layer. Layer 2 multicast protocols-IGMP snooping, MLD snooping, PIM snooping, IPv6 PIM snooping, multicast VLAN, and IPv6 multicast VLAN. • IPv4 and IPv6 multicast protocols: { For IPv4 networks-IGMP snooping, PIM snooping, multicast VLAN, IGMP, PIM, MSDP, and MBGP. { For IPv6 networks-MLD snooping, IPv6 PIM snooping, IPv6 multicast VLAN, MLD, IPv6 PIM, and IPv6 MBGP. This section provides only general descriptions about applications and functions of the Layer 2 and Layer 3 multicast protocols in a network. For more information about these protocols, see the related chapters. NOTE: The switches support IGMP snooping, MLD snooping, IGMP, MLD, PIM, and IPv6 PIM. Layer 3 multicast protocols Layer 3 multicast protocols include multicast group management protocols and multicast routing protocols. 9