Networking - Describe how to control the scope of multicast transmissions

Describe how to control the scope of multicast transmissions.

Controlling the scope of multicast transmission restricts the range of group members. TTL (Time To Live) is one of the mechanisms to limit the scope. If the TTL value is small, packets would only be multicast to smaller distance destinations. More the value of TTL, more would be the scope of transmission to a larger number of machines. Administrative scoping is another mechanism. In this, transmission is restricted to a specific address space of an organization or a site.
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