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Is multicast routable?
Multicast sources do not have a lot of control which destinations see their packets, it is quite possible data transmitted via multicast reaches destionations not available via unicast. I think IPv6 multicast should be routable over the Internet, in contrast to the IPv4 multicast that isn’t routable over the Internet.
Do I need multicast?
Multicast has a couple of fundamental characteristics that dictate how it’s used. Because a server only needs to send each packet once and will reach all of the recipients, it’s useful for situations where a large number of receivers need to receive the same data.
Does Netflix use unicast?
Video on demand services such as Netflix, Amazon Prime, YouTube, etc. all utilize the unicast method of streaming. All networks within the internet support the unicast method of transmission which is why it is so popular.
Can a multicast group be joined on more than one interface?
Of course, it is possible to join the same group on more than one interface. If you don’t specify a concrete interface, then the kernel will choose it based on its routing tables when datagrams are to be sent. It is also possible that more than one process joins the same multicast group on the same interface.
Is it important to have different multicast ports?
My question is, in multicast is having different ports make a difference if using the same multicast address with other services. Or should we use a unique multicast address for each service that does not conflict?
How does multicast work on a TCP / IP network?
As said before, any multicast-capable hosts join the all-hosts group at start-up , so “pinging” 224.0.0.1 returns all hosts in the network that have multicast enabled. Finally, consider that for a process to receive multicast datagrams it has to ask the kernel to join the group and bind the port those datagrams were being sent to.
Can A Level 2 host send and receive multicast traffic?
Level 2 hosts must be able to both send and receive multicast traffic. They must know the way to join and leave multicast groups and to propagate this information to multicast routers. Thus, they must include an Internet Group Management Protocol (IGMP) implementation in their TCP/IP stack. 2.3 Sending Multicast Datagrams.
https://www.youtube.com/watch?v=eXTyZyl2oKw