Multicast addresses – H3C Technologies H3C S12500-X Series Switches User Manual
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Address Description
224.0.0.13
All Protocol Independent Multicast (PIM) routers.
224.0.0.14 RSVP
encapsulation.
224.0.0.15
All Core-Based Tree (CBT) routers.
224.0.0.16 Designated
SBM.
224.0.0.17 All
SBMs.
224.0.0.18 VRRP.
•
IPv6 multicast addresses:
Figure 4 IPv6 multicast format
The following describes the fields of an IPv6 multicast address:
{
0xFF—The most significant eight bits are 11111111. This address is an IPv6 multicast address.
{
Flags—The Flags field contains four bits.
Figure 5 Flags field format
Table 4 Flags field description
Bit Description
0
Reserved, set to 0.
R
•
When set to 0, this address is an IPv6 multicast address
without an embedded RP address.
•
When set to 1, 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, this address is an IPv6 multicast address not
based on a unicast prefix.
•
When set to 1, 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, this address is an IPv6 multicast address
permanently-assigned by IANA.
•
When set to 1, this address is a transient, or dynamically
assigned IPv6 multicast address.
{
Scope—The Scope field contains four bits, which represent the scope of the IPv6 internetwork
for which the multicast traffic is intended.
Group ID (112 bits)
0xFF
Flags
Scope
0
7
11
15
31
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