R3102-R3103-HP 6600/HSR6600 Routers IP Multicast Configuration Guide

7
Address Description
224.0.0.12 DHCP server/relay agent.
224.0.0.13 All PIM routers.
224.0.0.14 RSVP encapsulation.
224.0.0.15 All CBT routers.
224.0.0.16 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, 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 Descri
p
tion
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.