What precautions should I take when using multicast addresses on an S series switches

Class D IP addresses are used as multicast addresses, ranging from 224.0.0.0 to 239.255.255.255. Not all class D IP addresses can be allocated randomly. Similar to unicast addresses, many reserved addresses exist. The reserved addresses are classified into the following types:
- Permanent multicast group addresses ranging from 224.0.0.0 to 224.0.0.255 are network protocol addresses allocated by IANA to the local network. When packets are sent, the TTL of the packets is 1. Therefore, the router does not forward packets from the local network segment. For example, base addresses (reserved group addresses) are multicast group addresses.
224.0.0.1: indicates all the hosts and routers joining multicast groups on a subnet.
224.0.0.2: indicates all the routers joining multicast groups on a subnet.
224.0.0.4: indicates Distance Vector Multicast Routing Protocol (DVMRP) routers.
224.0.0.13: indicates PIMv2 routers.
224.0.0.22: indicates IGMPv3 routers.
- User group addresses ranging from 224.0.1.0 to 238.255.255.255 are valid on the entire network and can be used. These addresses include the following special reserved addresses:
224.0.1.0 to 224.0.1.255: not local addresses. When packets are sent from these addresses, the TTL is greater than 1.
224.0.1.1: indicates the NTP address.
224.0.1.6: indicates the NSS address.
224.0.1.78: indicates Tibco multicast 1.
232/8: indicates the SSM group address.
233/8: indicates the GLOP group address.
- Local management group addresses ranging from 239.0.0.0 to 239.255.255.255 are valid in the local management domain only. They are private addresses and cannot be used on public networks.

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