Huawei Quidway S3500 Series Operation Manual page 272

Operation Manual - Multicast
Quidway S3500 Series Ethernet Switches
All members in the group can receive the packets. Membership of a multicast group is
dynamic, that is, hosts can join and leave groups at any time.
A multicast group can be either permanent or temporary. Part of addresses in the
multicast group is allocated by the official, known as the permanent multicast group. IP
addresses of a permanent group keep unchanged but the members in the group can
change. The number of members in a permanent multicast group can be random or
even 0. Those IP multicast addresses that are not reserved for permanent multicast
groups can be used by temporary groups.
Ranges and meanings of Class D addresses are shown in Table 1-1.
Table 1-1 Ranges and meanings of Class D addresses
Class D address
224.0.0.0∼224.0.0.255
224.0.1.0∼238.255.255
.255
239.0.0.0∼239.255.255
.255
Reserved multicast addresses that are commonly used are shown in the following
table:
Table 1-2 Reserved multicast address list
224.0.0.0
224.0.0.1
224.0.0.2
224.0.0.3
224.0.0.4
224.0.0.5
224.0.0.6
224.0.0.7
224.0.0.8
224.0.0.9
224.0.0.10
224.0.0.11
range
Reserved multicast addresses (addresses of permanent
groups). Address 224.0.0.0 is reserved. The other
addresses can be used by routing protocols.
Multicast addresses available for users (addresses of
temporary groups). They are valid in the entire network.
Multicast addresses for local management. They are
valid only in the specified local range.
Class D address
Huawei Technologies Proprietary
Chapter 1 IP Multicast Overview
Meaning
Base Address (Reserved)
Addresses of all hosts
Addresses of all multicast routers
Unassigned
DVMRP routers
OSPF routers
OSPF DR (designated router)
ST routers
ST hosts
RIP-2 routers
IGRP routers
Mobile agents
1-3
Meaning