Multicasting

This Section, I will be discussing Multicast. What is multicast? Why it is useful? What are advantages and disadvantages of Multicast and all Theory about Multicast related topics and some configurations. This section is divided into many topics which are listed below. You can find all into Multicast Label.

Topics included:

Multicasting

Multicast Address Ranges

Mapping of Multicast IP address to Mac address

Distribution Trees :

Source Tree

Shared Tree

PIM

PIM Dense Mode

PIM Sparse Mode

PIM Sparse Dense Mode

RPF Check

IGMP

Bootstrap (BSR)

Let’s see Types of Communications:

Unicast – One to one

Broadcast – One to All

In this two modes of communication, We don’t have any method of communication. Where we can address specified group of host.

Multicast – One to Many  (Specific host form Group)

Unicast  Vs Multicast

 Multicast - is the delivery of a single stream or information to a group of destination host simultaneously in a single transmission from the source creating copies automatically in other network using Network Devices like routers for efficient bandwidth utilization.

For example Radio:

                As you want to listen Radio , you will tune to particular Radio frequency and you can listen it. It’s same in multicast, you can join the multicast group you will access the real time applications.

Multicast is majorly used in Real time applications like, Voice, Video, Stock Broking applications, etc.

Why Multicast:

–    Used when sending same data to multiple receivers

–      Better bandwidth utilization

–      Used when addresses of receivers unknown

–      Used when simultaneous delivery of information for a group of receivers is required

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