![]() ![]() This is the EUI-64 method and is automatically created by most IPv6 enabled interfaces. Remember that the solicited-node address is the prefix FF02::1:FF00:0/104 and the last 24 bits of the unicast IPv6 address.Īdditional multicast addresses on which the host is listening are added and removed from the table as needed. This article introduces the procedure used to convert a MAC address into an IPv6 link-local address. The address of 33-33-FF-3F-2A-1C, which corresponds to the solicited-node address of FF02::1:FF3F:2A1C.The address of 33-33-00-00-00-01, which corresponds to the link-local scope all-nodes multicast address of FF02::1.For every multicast address being listened to by the host, there is a corresponding entry in the table of interesting MAC addresses.įor example, an IPv6 host with the Ethernet MAC address of 00-AA-00-3F-2A-1C (link-local address of FE80::2AA:FF:FE3F:2A1C) adds the following multicast MAC addresses to the table of interesting destination MAC addresses on the Ethernet adapter: Interface ID takes advantage of this uniqueness of MAC. MAC addresses are considered to be uniquely assigned worldwide. The MAC address of a system is composed of 48-bits and represented in Hexadecimal. The second half of the address (last 64 bits) is always used for Interface ID. To facilitate efficient delivery of multicast traffic, additional multicast destination addresses can be added or removed from the table. IPv6 has three different types of Unicast Address scheme. By default, this table contains the MAC-level broadcast address (0xFF-FF-FF-FF-FF-FF) and the unicast MAC address assigned to the adapter. If an Ethernet frame with an interesting destination MAC address is received, it is passed to upper layers for additional processing. The mapping of IPv6 multicast addresses to Ethernet multicast addressesĮthernet network adapters maintain a table of interesting destination MAC addresses. Figure 3-16 shows the mapping of an IPv6 multicast address to an Ethernet multicast address.įigure 3-16. When sending IPv6 multicast packets on an Ethernet link, the corresponding destination MAC address is 0x33-33-mm-mm-mm-mm, where mm-mm-mm-mm is a direct mapping of the last 32 bits of the IPv6 multicast address. take the mac address: for example 52:74:f2:b1:a8:7f throw ff:fe in the middle: 52:74:f2:ff:fe:b1:a8:7f reformat to IPv6 notation 5274:f2ff:feb1:a87f convert. ![]()
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