521122
89
Zoom out
Zoom in
Previous page
1/183
Next page
Chapter 8 Multicast
Multicast Overview
In the network, packets are sent in three modes: unicast, broadcast and multicast. In unicast, the
source server sends separate copy information to each receiver. When a large number of users
require this information, the server must send many pieces of information with the same content to
the users. Therefore, large bandwidth will be occupied. In broadcast, the system transmits
information to all users in a network. Any user in the network can receive the information, no
matter the information is needed or not.
Point-to-multipoint multimedia business, such as video conferences and VoD (video-on-demand),
plays an important part in the information transmission field. Suppose a point to multi-point service
is required, unicast is suitable for networks with sparsely users, whereas broadcast is suitable for
networks with densely distributed users. When the number of users requiring this information is
not certain, unicast and broadcast deliver a low efficiency. Multicast solves this problem. It can
deliver a high efficiency to send data in the point to multi-point service, which can save large
bandwidth and reduce the network load. In multicast, the packets are transmitted in the following
way as shown in Figure 8-1.
Figure 8-1 Information transmission in the multicast mode
Features of multicast:
1. The number of receivers is not certain. Usually point-to-multipoint transmission is needed;
2. Multiple users receiving the same information form a multicast group. The multicast
information sender just need to send the information to the network device once;
3. Each user can join and leave the multicast group at any time;
81
89


Need help? Post your question in this forum.

Forumrules


Report abuse

Libble takes abuse of its services very seriously. We're committed to dealing with such abuse according to the laws in your country of residence. When you submit a report, we'll investigate it and take the appropriate action. We'll get back to you only if we require additional details or have more information to share.

Product:

For example, Anti-Semitic content, racist content, or material that could result in a violent physical act.

For example, a credit card number, a personal identification number, or an unlisted home address. Note that email addresses and full names are not considered private information.

Forumrules

To achieve meaningful questions, we apply the following rules:

Register

Register getting emails for TP-LINK TL-SG2424P at:


You will receive an email to register for one or both of the options.


Get your user manual by e-mail

Enter your email address to receive the manual of TP-LINK TL-SG2424P in the language / languages: English as an attachment in your email.

The manual is 3,05 mb in size.

 

You will receive the manual in your email within minutes. If you have not received an email, then probably have entered the wrong email address or your mailbox is too full. In addition, it may be that your ISP may have a maximum size for emails to receive.

The manual is sent by email. Check your email

If you have not received an email with the manual within fifteen minutes, it may be that you have a entered a wrong email address or that your ISP has set a maximum size to receive email that is smaller than the size of the manual.

The email address you have provided is not correct.

Please check the email address and correct it.

Your question is posted on this page

Would you like to receive an email when new answers and questions are posted? Please enter your email address.



Info