Any-source multicast
Any-source multicast ( ASM ) is the older and more common form of multicast , in which several senders can be in the same group (*, G). In contrast, there is source-specific multicast , in which a single source is defined.
This method of multicast allows hosts to be sent to or from a group without any restriction of the end user's location. Because of the nominal bandwidth usage , this is well suited for video conferences, for example . However, it also allows unauthorized traffic and thus denial of service attacks.
ASM is used, for example, in IGMPv 2 (or MLDv1 for IPv6 ) or also PIM-SM , MSDP and MBGP .
advantages
- Scalability for big jobs
- Reduction of group management
- Existing technologies can be used