First day of multicast learning and sharing

 

1. Broadcast

Full-network broadcast

Single CIDR Block Broadcast

2. Multicast

When to use Multicast

When the same data is sent to multiple users

Unknown recipient

Send data to multiple users at the same time-stock trading

Why Multicast

Process consumption on the host and vro is reduced

Saves bandwidth and saves bandwidth compared with unicast

Optimized Link Performance

Distributed applications make multi-point applications possible for games.

3. How does multicast work?

Sender (source)-sends a copy of data to the multicast network for a multicast address

Multicast router-build multicast network-copy and forward multicast packets and send them to interfaces with Receivers

Q: How does the multicast router know where there is a receiver?

Recipient --- interested in multicast traffic

4. disadvantages of multicast UDP

1. The best transmission effort is not reliable, so it must be completed by multicast applications.

2. There is no congestion avoidance mechanism, or the application of multicast is used for coding.

3. If the packet is replicated, the user may receive two identical data packets.

4. Unable to deliver in sequence

5. Security is also a problem, and the recipient does not specify

5. Multicast Applications

One-to-least

Video conferencing)

Allow-to-one

6. multicast Encapsulation

Ip udp (srm Reliable Multicast/RTP, RTCP/other transport) -- Application Data

This article is from the "Network Technology" blog