HPE 5820X Series, Руководство по настройке

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7
•
IPv6 multicast addresses:
Figure 4 IPv6 multicast format
The following describes the fields of an IPv6 multicast address as shown in Figure 4 :
{
0xFF
—The most significant eight bits are 11111111, which indicates that this address is an
IPv6 multicast address.
{
Flags
—The Flags field contains four bits as shown in Figure 5 and described in Table 4 .
Figure 5 Flags field format
Table 4 Flags field description
Bit Description
0 Reserved, set to 0.
R
•
When set to 0, it indicates that this address is an IPv6
multicast address without an embedded RP address.
•
When set to 1, it indicates that this address is an IPv6
multicast address with an embedded RP address. (The P
and T bits must also be set to 1.)
P
•
When set to 0, it indicates that this address is an IPv6
multicast address not based on a unicast prefix.
•
When set to 1, it indicates that this address is an IPv6
multicast address based on a unicast prefix. (The T bit must
also be set to 1.)
T
•
When set to 0, it indicates that this address is an IPv6
multicast address permanently-assigned by IANA.
•
When set to 1, it indicates that this address is a transient, or
dynamically assigned IPv6 multicast address.
{
Scope
—The Scope field contains four bits, which indicate the scope of the IPv6
internetwork for which the multicast traffic is intended. Table 5 describes the values of the
Scope field.
Table 5 Values of the Scope field
Value Meaning
0, F Reserved.
1 Interface-local scope.
2 Link-local scope.
3 Subnet-local scope.
4 Admin-local scope.
5 Site-local scope.