HP 6125XLG R2306-HP 6125XLG Blade Switch Layer 3 - IP Services Configuration G - Page 128
Multicast addresses, EUI-64 address-based interface identifiers, Table 7, Configuring tunneling
View all HP 6125XLG manuals
Add to My Manuals
Save this manual to your list of manuals |
Page 128 highlights
Multicast addresses IPv6 multicast addresses listed in Table 7 are reserved for special purposes. Table 7 Reserved IPv6 multicast addresses Address FF01::1 FF02::1 FF01::2 FF02::2 Application Node-local scope all-nodes multicast address. Link-local scope all-nodes multicast address. Node-local scope all-routers multicast address. Link-local scope all-routers multicast address. Multicast addresses also include solicited-node addresses. A node uses a solicited-node multicast address to acquire the link-layer address of a neighboring node on the same link and to detect duplicate addresses. Each IPv6 unicast or anycast address has a corresponding solicited-node address. The format of a solicited-node multicast address is FF02:0:0:0:0:1:FFXX:XXXX. FF02:0:0:0:0:1:FF is fixed and consists of 104 bits, and XX:XXXX is the last 24 bits of an IPv6 unicast address or anycast address. EUI-64 address-based interface identifiers An interface identifier is 64-bit long and uniquely identifies an interface on a link. Interfaces generate EUI-64 address-based interface identifiers differently. • On an IEEE 802 interface (such as an Ethernet interface and a VLAN interface)-The interface identifier is derived from the link-layer address (typically a MAC address) of the interface. The MAC address is 48-bit long. To obtain an EUI-64 address-based interface identifier, insert the hexadecimal number FFFE (16 bits of 1111111111111110) into the MAC address (behind the 24th high-order bit), and set the universal/local (U/L) bit (which is the seventh high-order bit) to 1, ensuring that the obtained interface identifier is globally unique. Figure 52 Converting a MAC address into an EUI-64 address-based interface identifier • On a tunnel interface-The lower 32 bits of the EUI-64 address-based interface identifier are the source IPv4 address of the tunnel interface. The higher 32 bits of the EUI-64 address-based interface identifier of an ISATAP tunnel interface are 0000:5EFE, whereas those of other tunnel interfaces are all zeros. For more information about tunnels, see "Configuring tunneling." • On an interface of another type-The EUI-64 address-based interface identifier is generated randomly by the device. 120